Personal tools
Home → 7th European LS-DYNA Conference

restrict search to current section
For a simple text search, enter your search term here. Multiple words may be found by combining them with AND and OR. The text in this field will be matched with items' contents, title and description.

 

7th European LS-DYNA Conference

Progressive Damage Modeling of Plain-Weave Composites using LS-Dyna Composite Damage Model MAT162
Dr. Bazle A. Gama, Prof. John W. Gillespie Jr. - University of Delaware
Dr. Travis A. Bogetti - US Army Research Laboratory
Progressive damage of plain weave S-2 Glass/SC15 composites under in-plane tension, compression, and shear, through-thickness tension and compression, and transverse interlaminar and punch shear loading is presented for a unit single element using the MAT162 composite damage model in LS- Dyna. While the detail formulation of the MAT162 material model can be found in the Keyword user's manual [1], the main objective of this paper is to ...
Study of the Behavior of Dummy Hybrid III Upper Extremities
Sascha Kutschenreuter, Maxime Dagonet - Takata Petri AG
Studies of crash simulations resulted in the assumption that an interaction of the upper occupant extremities with the vehicle interior has effects on the occupant loadings, e.g. the chest acceleration. Quantifying this effect requires a dummy model also valid for the area of upper extremities. A suitable test procedure shall help to identify possible force paths via the arms into the dummy torso and, as a ...
Numerical Investigations to Determine Sources for the Scatter of the BioRID Dummy
S. Stahlschmidt - DYNAmore GmbH
A. Hirth - Daimler AG
The BioRID v2.5 model is in a very fine validation state until now. In some new tests for further validation of the model, one can observe a very strong scatter in some major signals of the tests. Some of these signals are used to calculate injury criteria which are used to determine the quality of a seat in rear crash scenarios in consumer tests. This paper describes the new validation test setup and gives an overview about the latest ...
Developments in Finite Element Safety Models
J. Rasico - FTSS
FTSS has been providing Finite Element models to the safety community for over a decade. This has resulted in an expansive family of; commonly used Anthropomorphic Test Devices (ATDs), dummies primed for future regulation, and complimentary safety tools for the examination of unique protection systems, such as ejection mitigation. In conjunction, the last 10 years have seen a continuous demand for increased quality and functionality of ...
Development of the PDB WorldSID 50th Model with the German Automotive Industry
A. Gromer, S. Stahlschmidt, R. D'Souza - DYNAmore
In times where simulation methods are well-established in Vehicle Passive Safety Development, it is indispensable to provide a virtual equivalent of current hardware dummies. Thus, German car manufacturers decided to build up a WSID50th finite element model. Due to the experience of former FAT dummy development projects, the processing of the WSID50th model achieves a high efficiency level. The project started with building up a model using ...
Head injury prediction tool for protective systems optimisation
Deck Caroline, Willinger Rémy - Strasbourg University
This paper presents an original numerical human head FE models followed by its modal and temporal validation against human head vibration analysis in vivo and cadaver impact tests from the literature. The human head FE model developed presents two particularities : one at the brain-skull interface level were fluid-structure interaction is taken into account, the other at the skull modelling level by integrating the bone fracture simulation. ...
MATERIAL MODELING OF ORTHOPEDIC INSOLES
S. Kolling, M. Neubert - Giessen University of Applied Sciences
J. Subke, J. Griesemann - Biomechanics Lab
An experimental setup is presented for the material characterization of rubber-like sensomotoric insoles. This setup consists of local hardness measurements, quasi-static compression tests and dynamic testing using the 4a Impetus II pendulum test system [1]. A correlation between the measure of shore hardness and the stress strain relation of rubber-like materials is presented and verified in order to consider the inhomogeneous properties of ...
Development of numerical models for the investigation of motorcyclists accidents
Mazdak Ghajari, Lorenzo Iannucci - Imperial College London
Caroline Deck, Remy Willinger - Strasbourg University
Ugo Galvanetto - Padova University
The Finite Element (FE) method was employed to develop and enhance numerical models that can be used for simulating accidents involving motorcyclists. They are the FE models of a commercial helmet, the human head and the Hybrid III dummy. The composite shell and foam liner of the helmet, which are the most important components in terms of energy absorption, were generated using the Ls-Dyna preprocessing software. The FE model of the human ...
Improvements and Validation of an Existing LS-DYNA Model of the Knee-Thigh-Hip of a 50th Percentile Male Including Muscles and Ligaments
Dr. Chiara Silvestri, Mario Mongiardini, Prof. Dr. Malcolm H. Ray - Worcester Polytechnic Institute
A detailed review of an existing LSDYNA finite element (FE) model of the Knee-Thigh-Hip (KTH) of a 50th percentile male was accomplished. The main scope was to refine some aspects of the model for obtaining a more appropriate and biofidelic tool for injury mechanics investigation of the KTH in frontal car crashes. Detailed reviews of this model were performed with regards to material properties of the bone models used for representation of ...
New Method to Characterize Airbag Inflators On the Way to OoP Simulation
Juan Fernández - Takata-Petri AG
An accurate Out-of-Position (OoP) simulation will be a mile stone for the development of restraint systems, as this would save hundreds of expensive hardware tests. OoP load cases are currently required by the US legislation and as in-house specification by many car manufactures for other markets. But simulating OoP is a difficult issue, as several challenges have to be addressed, for example: An improved dummy model validated against new ...
Use of the FTSS Modular Crash Dummy Models in Frontal Occupant Simulation
Richard Brown - Jaguar Land Rover
Legal and consumer crash tests use crash dummies as the key measurement device in the assessment of crash severity. The dummies are complex assemblies in themselves, and sophisticated DYNA FE models are available, with a significant amount of validation testing to support them. In a large vehicle crash model, the dummy is typically responsible for 10-20% of the CPU time, and there is no strong motivation to reduce its size; in fact, the tendency ...
MADYMO and LS-DYNA; the Strength of a Combined Approach
F. Schoenmakers - TASS
While safety legislation becomes more stringent and vehicles intended for global markets must conform to the requirements of a wider range of regulatory bodies, the cost of physically testing crash safety performance continues to rise and the vehicle safety system design is under high pressure to adopt virtual development techniques. Structural analysis and safety system optimization have traditionally been undertaken in two ...
On Predicting Lower Leg Injuries for the EuroNCAP Front Crash
Thomas Hofer - Altair Engineering GmbH
Peter Karlsson - Saab Automobile AB
Niclas Brännberg - Altair Engineering AB
Lars Fredriksson - Altair Engineering GmbH
Validation of occupant lower leg injury performance is a difficult procedure due to the complex interaction between occupant and vehicle structure. As a starting point, a carefully validated structural model is crucial to ensure the accurate load of the occupant model in terms of acceleration and applied forces. However, even after a tedious validation of structural performance and occupant environment, the calculated tibia values might ...
Development of a Flex-PLI LS-DYNA Model
Shinya Hayashi - JSOL Corporation
Masahiro Awano, Isamu Nishimura - Mitsubishi Motors Corporation
A biofidelic flexible pedestrian legform impactor (Flex-PLI) has been developed by Japan Automobile Manufacturers Association, Inc. (JAMA) and Japan Automobile Research Institute (JARI). The Flex-PLI has good biofidelity as well as several knee ligament elongation measurement capabilities, three femur and four tibia bending moment measurement capabilities. For these reasons Flex-PLI is likely to be used for future pedestrian Global Technical ...
Simplified FE Simulation of Frontal Occupant Restraint Systems
Richard Brown, David Coleman, Ian Bruce - Jaguar Land Rover
A biofidelic flexible pedestrian legform impactor (Flex-PLI) has been developed by Japan Automobile Manufacturers Association, Inc. (JAMA) and Japan Automobile Research Institute (JARI). The Flex-PLI has good biofidelity as well as several knee ligament elongation measurement capabilities, three femur and four tibia bending moment measurement capabilities. For these reasons Flex-PLI is likely to be used for future pedestrian Global Technical ...
Finite Element Modeling of the Arresting Gear and Simulation of the Aircraft Deck Landing Dynamics
Dmitriy Mikhaluk, Igor Voinov, Prof. Alexey Borovkov - CompMechLab of St. Petersburg State Polytechnical University
Deck arresting gear is a special aero-carrier unit that is destined to provide an efficient arrestment of the deck jet-fighters of masses 10-25 tons with high landing velocities between 180 and 240 km/h. Main elements of the modern arresting gear are a cable and a hydraulic system. During deck landing the jet-fighter grasps the cable with a hook and draws it. The cable is threaded between a system of blocks, that are forming a ...
Integrative Optimization of injection-molded plastic parts - Multidisciplinary Shape Optimization including process induced properties
Andreas Wüst, Torsten Hensel, Dirk Jansen - BASF SE
The Integrative Approach described in this paper incorporates effects of the part’s manufacturing process (here: injection molding) into a new workflow for optimization of the part performance. The new approach is able to close the gap between process simulation/optimization and mechanical simulation/optimization. New classes of design variables linked to the manufacturing process complicate the workflow of the optimization. The newly ...
Multi-Disciplinary Design Optimization exploiting the efficiency of ANSA-LSOPT-META coupling
Korbetis Georgios, Siskos Dimitrios - BETA CAE Systems S.A
Simple optimization techniques may serve well for the improvement of product performance at early concept design phases. At final phases though, optimization problems become more complex, with many variables and multiple optimum solutions. This leads to the need for the deployment of multi- disciplinary optimization techniques where many different load cases and analysis types, such as for Crash, NVH, CFD etc., are combined to achieve the ...
Geometry-Based Topology Optimization - Improving Head Impact Performance of an Engine Hood
D. Weiss, B. Sonntag, T. Krumenaker, Dr. D. Nowottny, Dr. J. Sprave, W. Hipp - Daimler AG
The actual paper introduces the integration of LS-DYNA and CATIA V5 into automatic geometry- based topology optimization of an engine hood regarding pedestrian head impact. In current design processes, such Computer Aided Engineering (CAE) tools, along with structural optimization, have become essential elements to provide efficient and reliable structures. However, the required iterative process of adjusting steps between simulation and ...
Topology and Geometry Based Structure Optimization using Implicit Parametric Models1 and LS-OPT
H.Zimmer, M.Prabhuwaingankar - SFE GmbH
F.Duddeck - Privatdozent
Today’s vehicle development process demands for quick evaluation of new designs considering the various attributes in the conceptual phase. Various CAx tools and methods are essential to realize these assessments in a very narrow time frame. New design variants with desired criteria should be quickly created and analyzed. Beside NVH behavior and other criteria crash safety needs to be addressed too as early as possible. Synergy in CAE ...
Investigation of Accuracy Improvement on Crashworthiness Simulation with Pre-Simulation of Metal Forming.
Katsuhiko TAKASHINA, Kazuhiro UEDA, Takeo OHTSUKA - MITSUBISHI MOTORS CORPORATION
To improve the accuracy of crashworthiness simulation, it is preferable to consider the effects of metal forming. However, this approach was difficult in practice since analyzing the stamping simulation in detail requires much work. This paper describes the influence of residual strain, work hardening and material thickness changes resulting from the stamping process on the crashworthiness simulation. In almost all impact load cases, the ...
Considering damage history in crashworthiness simulations
Frieder Neukamm, Markus Feucht - Daimler AG
André Haufe - DYNAmore GmbH
Crashworthiness simulations using explicit Finite Element methods are a central part of the CAE process chain of car body development. Since crash tests of prototype cars at an early development stage are very expensive, a maximum in predictive performance of crash simulations can make a substantial contribution to a cost-efficient car development process. A central issue to ensure this, is an accurate prediction of ...
COUPLED FEM CALCULATIONS - A CAE TOOL TO IMPROVE CRASH-RELEVANT AUTOMOTIVE BODY COMPONENTS BY LOCAL HARDENING
Klaus Wolf - Fraunhofer Institute SCAI, Germany
Dr.-Ing. Robert Schilling - Ford-Werke GmbH, Köln
Dr. Jörn Lütjens, Dr.-Ing. Michael Hunkel - IWT Bremen
Dr.-Ing. Thomas Wallmersperger - ISD Universität Stuttgart
Udo Jankowski - Tecosim GmbH
Dirk Sihling - GNS mbH
Klaus Wiegand, Albrecht Zöller - Daimler AG
Martin Heuse Faurecia Autositze GmbH
In the automotive industry, there is an increasing demand for weight reduction as well as safety requirements. These demands have motivated the use of locally optimized components. This study shows how local rigidity of crash-relevant side rails made of multi-phase steels can be improved by local hardening and thus avoiding an increase of the cross section. At the same time simulation process chains were completed and results validated by ...
Damage modelling of a TRIP steel for integrated simulation from deep drawing to crash
Dr. Dong-Zhi Sun, Dr. Florence Andrieux - Fraunhofer Institute for Mechanics of Materials
Dr. Markus Feucht - HPC X271
The local mechanical properties e.g. flow stress and fracture strain in an automotive component manufactured by deep drawing are inhomogeneous due to different local deformation degrees which affect the component behaviour under crash loading. A reasonable approach for modelling the damage behaviour of a component produced by deep drawing is a coupling between forming simulation and crash simulation. The open questions are which material ...
An assessment of the new LS-DYNA layered solid element: basics, patch simulation and its potential for thick composite structure analysis
Madhukar Chatiri - CADFEM GmbH
Thomas Güll - Adam Opel GmbH
Prof. Anton Matzenmiller - University of Kassel
One major component of fuel cell vehicles is the hydrogen storage system. A promising and nowadays mostly used approach is to store hydrogen in wet wound carbon fiber reinforced plastic (CFRP) vessels manufactured by filament winding process with an operating pressure of up to 70 MPa (hereafter referred as H2 vessel). Due to the inherent complexity and 3-dimensional nature, accurate behavior of such thick composite structures in impact ...
Finite element development and early experimental validations for a three dimensional virtual model of a bus
Prof. Dr. Mariano Pernetti, Dr. Salvatore Scalera - AMET ITALY
Road safety barriers in Europe have to fulfil the European standard EN 1317, which defines a set of crash tests for each safety barriers containment levels. Full scale tests of vehicle collision against road safety barriers have a huge importance to assess the outcomes of real accidents and, more in general, to identify barriers and vehicles features which influence crashworthiness in a meaningful manner. On the other hand, this kind of ...
Quicker Process to Consider Strain Hardening for Crash Analysis Using HYCRASH
Sayaka ENDOH, Takahiko MIYACHI, Yasuyoshi UMEZU - JSOL Corporation
As one of the important issues in correlation of crash analysis, we know that the press-forming effect has large influence for the result of the analysis. Some tries and studies were carried out to assume the forming result to the crash analysis. However these actions haven’t spread to the actual product development because of some difficulties. We mark the Inverse Solver to solve this issue and have developed the new solver HYCRASH, ...
Collision of a light weight passenger car against a steel bridge barrier: evaluation of severity indices varying impact conditions
Prof. Dr. Mariano Pernetti, Dr. Salvatore Scalera - AMET ITALY
The standards which fixes guidelines for the execution of crash tests to assess the effectiveness of safety barriers in USA and Europe, define an experiment with a low weight passenger car. Such an investigation’s aim is to evaluate risks for vehicle’s occupants in case of impact against the tested device. The congruence of this approach with the philosophy of testing at “the practical worst condition”, has been widely demonstrated in ...
An Investigation to Compare the Application of Shell and Solid Element Honeycomb Model in ODB
Mehrdad Asadi - Cellbond
Brian Walker - ARUP
Hassan Shirvani - Anglia Ruskin University
Cellbond and ARUP have launched their advanced crash barrier models in 2006 and since the time a continuous study has been carried out to distinguish costumer requirements and review feedbacks. Existing barrier models are constructed using the solid element configuration in honeycomb segments along with validated Modified_Honeycomb material cards. Due to a number of demands on using Shell based honeycomb model in crash barriers by ...
Layout, Validation and Benchmark of an all new Frontal Offset Barrier FEM Model
Bernhard Fellner - Magna Steyr Fahrzeugtechnik AG & CoKG
Thomas Jost - Das Virtuelle Fahrzeug Forschungsgesellschaft mbH
For the customer, passive safety is one of the driving reasons for the decision when buying a new car. To ensure high safety standards, passive safety is demonstrated in vehicle crash tests. Instead of vehicle to vehicle crash tests, one vehicle is replaced by an aluminium honeycomb based crash barrier. This barrier represents the front of a vehicle by the shape, the deformation behaviour and the energy absorption. Using Finite Element ...
SuperLIGHT-CAR - the Multi-Material Car Body
Lutz Berger, Micha Lesemann, Christian Sahr - RWTH Aachen University
Simon Hart, Richard Taylor - ARUP
Over the last years, total vehicle weights have risen significantly. With their direct influence on the power demand of vehicles, the reduction of weight is one among other measures in order to decrease the fuel consumption and CO2-emissions. The European project SuperLIGHT-CAR (SLC) is aiming at a weight reduction for the body-in-white (BIW) of a compact class passenger car, following the multi- material approach. By this, the perfect ...
An Investigation of the Application of Bolt Pre- Stress and its Effect during Low Speed Impact Loading
A. Sean Duvall - AMEC
This report is an initial investigation in to the effect of pre-stress of bolts during impact. The conclusions are not definitive but do indicate that for large strain analysis the effect of pre-stress in bolts is minimal. The effects are more noticeable for lateral impacts than in axial impacts. Further investigation is required to determine the effects of including friction and for other bolted configurations. This report is not an AMEC ...
A Rate-Dependent, Elasto-Plastic Cohesive Zone Mixed-Mode Model for Crash Analysis of Adhesively Bonded Joints
Stephan Marzi, Olaf Hesebeck, Markus Brede - Fraunhofer IFAM
Felix Kleiner - Henkel AG & Co. KGaA
Presently, there are various cohesive zone models implemented in LS-DYNA. The simplest one consists of a bi-linear traction separation-law in both modes I and II. Further models allow more complicated shapes of the traction-separation law, such as the material model of Tvergaard and Hutchinson or the General Cohesive Zone Model. However, none of these implemented models consider rate-dependency or effects of plasticity. Crash-optimized ...
Modelling and predicting spotweld failures in automotive crash structures
Dr. P.K.C.Wood, Dr. C.A.Schley, Mr. R.Beaumont - IARC, University of Warwick, UK
Dr. B.Walker - ARUP, ARUP Campus, Blythe Valley Business Park, UK
Mr. T.Dutton - Dutton Simulation Ltd, Kenilworth, UK
Mr. M.A.Buckley - Jaguar Land Rover, UK
The project has developed spotweld failure models capable of industry application for a range of steel grades to support development of automotive products, and their compliance to international crash safety requirements. An important consideration in this project is a requirement to balance the cost to develop the data input to models and their application capability in CAE based crash simulation tools to predict spotweld failures. Shear ...
New Design of Roadside Pole Structure: Crash Analysis of Different Longitudinal Tubes using LS-DYNA
Dr. Ahmed Elmarakbi, Mr. Niki Fielding - University of Sunderland, United Kingdom
This paper is an investigation into the design of an energy absorbing street pole, concerning the frontal impact of a vehicle. With design engineers now are looking at other ways to improve vehicle occupant safety by focusing on the advantages that can be achieved by improving the crashworthiness of street furniture. The study of axial crush behaviour of metal materials are investigated along with a number of variables such as ...
Forming simulations based on parameters obtained in microstructural cold rolling simulations in comparison to conventional forming simulations
Sebastian Lossau - Daimler AG
Bob Svendsen - TU-Dortmund
This work demonstrates a first approach of using virtually obtained material properties as input for forming simulations. The necessary parameters to apply a Barlat-Lian89 yield surface are computed in the so called “Virtual Lab”, which performs FE-simulations on previously cold rolled volume elements to predict the distribution of grains. The resultant stress-strain-curves serve as input parameter for a deep drawing simulation. For ...
Investigation on Simulation of Buckling of Aluminium Sheet Alloys
Ralf Schleich - HochschulInstitute Neckarsulm
Christoph Albiez - AUDI AG
Apostolos Papaioanu, Prof. Dr. M. Liewald MBA - Universität Stuttgart
The lack of accuracy of buckling prediction in forming simulation is widely known. This is mainly caused by insufficient element stiffness as well as a very simplified strain path but not sheet thickness dependent buckling criterion. Within this contribution a methodology for investigating such issue is developed. This paper also reveals possibilities concerning an experimental analysis of buckling sensitivity of AA6016 aluminium sheet metal ...
A Real World Approach for using LS-DYNA to Achieve True Springback Compensation on SS Components During Forming
M. Clarke - Continental Tool and Die
J. He - Engineering Technology Associates, Inc.
X. Zhu - LSTC
Springback is every tool designer’s nightmare. A tool designer can make a die adjustable for some areas that need to be over-hit. Most parts are sprung throughout their entire surface. In these cases the entire part would need adjustment. Almost every time the die always requires a re-cut/re-work to put the part in spec. This re-work and re-cut is a time consuming, trial and error method that takes shop resources which typically are not ...
Using LS-Dyna for Hot Stamping
Arthur B. Shapiro - LSTC
Presented is a methodology for finite element modeling of the continuous press hardening of car components using ultra high strength steel. The Numisheet 2008 benchmark problem BM03 [1] is selected as the model problem to be solved. LS-DYNA [2] has several features that are useful to numerically model hot sheet metal stamping, such as: (1) modeling high rate dynamics for press forming; (2) conduction, convection and radiation heat transfer; ...
Determination of Flow Curves by Stack Compression Tests and Inverse Analysis for the Simulation of Hot Forming
B. Hochholdinger, P. Hora - ETH Zurich
H. Grass, A. Lipp - BMW AG
Due to the increasing number of body-in-white parts that are manufactured by hot forming of boron alloyed sheet metal (22MnB5), the demand for a virtual representation of this specific manufac- turing process is evident. For a realistic simulation of hot stamping processes, the accurate modeling of the flow stress as function of strain, strain rate and temperature is essential. In the last years a large varity of ...
Recent Developments in LS-DYNA
Dr. John Hallquist - LSTC
In this presentation Dr. John O. Hallquist, founder and president of Livermore Software Technology Corporation (LSTC), will give an overview about recent developments in LS-DYNA. LS-DYNA is a highly advanced general-purpose nonlinear finite element program that is capable of simulating complex real world problems. The distributed memory solver provides very short turnaround times on Unix, Linux and Windows clusters. The major development ...
Wood and wood products - linking multiscale analysis and structural numerical simulations
Karin Hofstetter, Josef Eberhardsteiner, Reinhard Stürzenbecher, Christoph Hackspiel - Vienna University of Technology
Wood is one of the oldest construction materials known to man. Over thousands of years it has been mainly used in a craft framework, so that current design rules are often based on experience and tradition. The scientific knowledge about the material behavior is often surprisingly poor. In order to exploit the extraordinary ecological potential of the material and to enable its structural use also in an industrial framework, improved ...
A Topology Optimization Tool for LS-DYNA Users: LS-OPT/Topology
Tushar Goel, Willem Roux, Nielen Stander - Livermore Software Technology Corporation
Topology optimization is a very powerful tool to develop new concepts and has been widely used in engineering problems involving static loading conditions. However, there has been relatively little work for topology optimization of industrial size non-linear dynamic systems. The main issues are non-linear interactions among the material properties, contacts between parts, large strain-rates, transient behavior, etc. A hybrid cellular ...
Integration of Morphing and Optimization with the CAx-Load Case Composer at AUDI
Dr. Holger Meissner - AUDI AG
Marko Thiele - DYNAmore GmbH
The increasing demand to evaluate vast amounts of different load cases has led to a highly standardized and automated way of model assembling at AUDI. This model assembling is greatly assisted by the software “CAx Load Case Composer” which has been developed by DYNAmore in cooperation with AUDI. The Loadcase Composer (LoCo) provides the user with convenient ways to manage FE-model include files and allows to automatically select appropriate ...
Practical Examples of Efficient Design Optimisation by Coupling VR&D GENESIS and LS-DYNA
David Salway, GRM Consulting Ltd. UK.
Paul-André Pierré, GRM Consulting Ltd. UK.
Martin Liebscher, Dynamore GMBH, Germany
With the ever increasing demand for the efficient use of materials to reduce manufacturing costs and product mass; the use of optimisation techniques have become common place in CAE. The optimisation techniques used for optimising in the non-linear domain, and those used for linear domain problems have until recently been distinctly separate philosophies. For instance topology optimisation would be used with linear static analyses, but could ...
Grouping detection of uncertain structural process by means of cluster analysis
Aleksandra Piotrow, Stephan Pannier, Wolfgang Graf - TU Dresden
Martin Liebscher - DYNAmore GmbH
Structural analysis under consideration of the uncertainty of input parameters, such as loads, material, and geometry leads to uncertain time-dependent results. Such uncertain structural process shows for the uncertain input parameters all possible behaviours of a structure. Modelling of uncertainty in input parameters when only incomplete or expert knowledge based information is available requires the introduction of the uncertainty model ...
Variable Complexity Modeling for Speeding Up Multi- Run-Design-Tasks with Computationally Expensive Simulations
Dr.-Ing. Holger Wenzel - SIMULIA SLM Europe
Optimization and the improvement of robustness and reliability in the early stages of the product development is often attempted today using simulation methods together with algorithms that run these simulations in an automated manner. In this context the need often arises, to run the simulation models with small changes of the geometry hundreds to tenth of thousands times. If these simulations are computationally expensive, like a full ...
Optimization and robustness of complex material model simulations with modeFRONTIER
Marco Perillo, Vito Primavera, Luca Fuligno - EnginSoft SpA
Giulia Fabbri, Casper Steenbergen, Nicolò Pasini - Automobili Lamborghini SpA
Experimental quasi-static and dynamic tests were conducted over different types of advanced material samples, such as composite sandwich, in order to derive both mechanical and numerical input parameters for LS-DYNA material models. The characterization of models addressed to reproduce the behaviour of real materials takes great importance in order to simulate accurately complex phenomena such as crash tests and impact events. This work ...
Automated Metamodeling for Efficient Multi-Disciplinary Optimisation of Complex Automotive Structures
Dr. Florian Jurecka - FE-DESIGN GmbH
The use of multi-disciplinary optimisation methods (MDO) in the development process of complex automotive structures is often hindered by several problems. The required resources for very expensive simulations such as crash or 3D CFD analyses rapidly exceed the means available – especially whenever many input parameters, disciplines or load cases are involved. Furthermore, we have experienced that it can be difficult to assure stable runs of ...
Optimization study of a parametric vehicle bumper subsystem under multiple load cases using LMS Virtual.Lab and OPTIMUS
Laszlo Farkas, Cédric Canadas, Stijn Donders, Tom Van Langenhove, Nick Tzannetakis - LMS International
Johan Tielens, Danny Schildermans - PUNCH Metals N.V.
This paper deals with the design and optimization of a vehicle bumper subsystem, which is a key scenario for vehicle component design. More than ever before, the automotive industry operates in a highly competitive environment. Manufacturers must deal with competitive pressure and with conflicting demands from customers and regulatory bodies regarding the vehicle ...
Next 50 items » 1 2 3