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12th International LS-DYNA Conference 2012

A Comparison between Three Different Blast Methods in LS-DYNA: LBE, MM-ALE, Coupling of LBE and MM-ALE
Z. S. Tabatabaei (PhD Candidate, Missouri University of Science and Technology), J. S. Volz (Assistant Professor, Missouri University of Science and Technology)
A previous experimental test was modeled in LS-DYNA®. Three different methods of simulation were performed. These methods are empirical blast method, arbitrary Lagrangian Eulerian (ALE) method, and coupling of Lagrangian and ALE method. Free field pressure history recorded from experimental test was compared with the first method. Peak pressure for all these three methods were compared together and discussion of results is provided. Keyword: ...
A Comprehensive Study on the Performance of Implicit LS-DYNA
Y.-Y. Lin (Hewlett-Packard Company)
This work addresses four aspects of Implicit LS-DYNA’s performance. First, Implicit LS-DYNA’s scalability is characterized on multicore platforms. Second, the effectiveness of the GPU implementation is examined. Third, the effect of memory configuration on performance and information on how to configure optimal memory size for a system are presented. And fourth, the performance of out-of-core solutions is discussed.
A Finite Element Model of the Pelvis and Lower Limb for Automotive Impact Applications
C. D. Untaroiu (Virginia Tech), J. Shin, N. Yue (University of Virginia), Y.-H. Kim, J.-E. Kim, A. W. Eberhardt (University of Alabama at Birmingham)
A finite element (FE) model of the pelvis and lower limb was developed to improve understanding of injury mechanisms of the lower extremities during vehicle collisions and to aid in the design of injury countermeasures. The FE model was developed based on the reconstructed geometry of a male volunteer close to the anthropometry of a 50th percentile male and a commercial anatomical database. The model has more than 625,000 elements included ...
A New Method for Efficient Global Optimization of Large Systems Using Sub-models HEEDS COMPOSE Demonstrated on a Crash Optimization Problem
N. Chase, R. Sidhu, R. Averill (Red Cedar Technology)
Executing full vehicle finite element simulations can be very time consuming and expensive. Compound this with the large number of evaluations required for crash optimization problems due to their complicated design landscapes, and optimization of full vehicle crash simulations becomes very computationally expensive and difficult. An ideal solution is to reduce the full vehicle down to a manageable sub-model which runs significantly quicker ...
A Pre-processor Software for the Calibration of Material Models for LS-DYNA
H. Lobo (Matereality)
LS-DYNA contains a wealth of material models that allow for the simulation of transient phenomena. These models are often quite complex and difficult to calibrate. We present CAE Modeler, a generalized pre-processor software used to convert material property data into material parameters for different material models used in CAE. In this paper, CAE Modeler is used to streamline the conversion of rate dependent stress-strain data into ...
A Tutorial on How to Use Implicit LS-DYNA
R. Grimes (LSTC)
This talk will focus on the issues of using the Implicit features of LS-DYNA. Implicit has a profoundly different footprint regarding the computational resources required than an explicit simulation. This talk will especially focus on the management of those computational resources, especially for distributed memory computations. This talk will also include an overview of techniques for debugging models for use by Implicit.
Advance in Sheet Metal Forming - Failure Criteria, Friction, Scrap Trimming and Adaptive Meshing
L. Zhang, X. Zhu (LTSC)
Some of the new features developed since the last conference will be discussed. 1)Directional and pressure sensitive friction model for metal forming Developed together with Ford Motor Research and Advanced Engineering Laboratory, this feature enables definition of Coulomb frictions in any directions in the sheet plane. The friction coefficients can also be scaled based on the contact pressure incurred during the stamping process. 2)Failure ...
Advance in Sheet Metal Forming - One-step Solution, Multi-Beads, Gravity Prebending, Auto Nets, and Local Compensation
X. Zhu, L. Zhang (LSTC)
Some of the new features developed since the last conference will be discussed. 1)A fast one-step sheet metal forming program Developed mostly for blank size estimation and forming effect initialization in crash simulation, this powerful feature allows hundreds of parts to be simulated in a very short time. 2)An improvement to the contact draw bead Developed together with Ford Motor Research and Advanced Engineering Laboratory, multiple ...
ALE Adaptive Mesh Refinement in LS-DYNA
N. Aquelet (LSTC)
An adaptive mesh refinement capability was implemented in the 3D MMALE (Multi-Material Arbitrary Lagrange Euler) code. It automatically and locally refines (or coarsens) ALE hexahedral solid elements. The keyword *REFINE_ALE (or *ALE_REFINE) activating this feature has 3 lines of parameters that enable 3 different kinds of refinement. If the keyword has only one line, the refinement is static and only occurs during the initialization. If ...
ALE Incompressible Fluid in LS-DYNA
N. Aquelet, M. Souli (LSTC)
The computation of fluid forces acting on a rigid or deformable structure constitutes a major problem in fluid- structure interaction. However, the majority of numerical tests consists in using two different codes to separately solve pressure of the fluid and structural displacements. In this paper, a monolithic with an ALE formulation approach is used to implicitly calculate the pressure of an incompressible fluid applied to the structure. ...
ALE Modeling of Explosive Detonation on or near Reinforced-Concrete Columns
J. M. H. Puryear, D. J. Stevens, K. A. Marchand (Protection Engineering Consultants), E. B. Williamson (University of Texas), C. K. Crane (USACE Engineer Research and Dev. Center)
The detonation of explosive threats in contact with or near reinforced concrete columns was modeled using the Arbitrary Langrangian-Eulerian (ALE) capability of LS-DYNA, in support of the development of a software tool for assessing the vulnerability of structures subjected to terrorist attack. The explosive, air, and concrete were modeled as fluids, and the reinforcement was modeled using beam elements. *MAT_72R3 was used for the concrete, ...
An Efficient Modeling Procedure for Simulation of Dynamics of Adhesively Bonded Joints
Anindya Deb, Indrajit Malvade (CPDM, Indian Institute of Science)
The present study is aimed at developing a new computationally efficient modeling procedure that predicts well the nonlinear mechanical behavior of adhesively bonded joints. The approach is thought to be particularly beneficial for computationally intensive vehicle crash simulations. Two other conventional modeling approaches are considered, that is, accounting for adhesive layer between shell-based substrates/flanges with monolithic ...
An Efficient New Sequential Strategy for Multi-Objective Optimization using LS-OPT
N. Stander (LSTC)
®A new surrogate-assisted Multi-Objective Optimization algorithm has been implemented in LS-OPT . The algorithm, known as Pareto Domain Reduction, is an adaptive sampling method and an extension of the classical Domain Reduction approach (also known as SRSM). A Multidisciplinary Design Optimization (MDO) example involving a vehicle impact is used to demonstrate that the accuracy is very close to the NSGA-II “exact” method while using a small ...
Analysis of the Scatter of a Deploying Airbag
R. Brown, M. Bloomfield (JaguarLandrover), C.-A. Thole, L. Nikitina (Fraunhofer Institute SCAI)
This paper discusses some of the challenges faced by the automotive industry in dealing with the natural variation in input parameters and environmental factors that lead to scatter in results. We describe how a lack of consideration of this variation can lead to surprises during testing, with the associated risk of unplanned cost, and present a technique using Principal Components Analysis to improve the robustness of CAE crash models. In a ...
Application and CAE Simulation of Over Molded Short and Continuous Fiber Thermoplastic Composites, Part II
P. S. Kondapalli, K. Grumm (BASF Corp.), Y. Cao (Faurecia North America), V. Laurent (Faurecia Europe)
Automotive seating back frames for front row are mostly constructed from high strength steel in order to meet very rigorous crash requirements. The main requirements are meeting the rear impact and luggage retention behavior as specified by the standards. In this paper, seating back frames constructed from over molded Short Fiber Reinforced Thermoplastics (SFRT) on Continuous Fiber Reinforced Thermoplastics (CFRT) inserts are described. One ...
Application and CAE Simulation of Over Molded Short and Continuous Fiber Thermoplastic Composites, Part I
P. S. Kondapalli, K. Grumm (BASF Corp.)
Short Fiber Reinforced Thermoplastics (SFRT) such as glass filled Polyamide 6 and 66 have been widely adopted as a metal replacement in a wide range of industries. The main advantage of using these materials is high strength to weight ratio, light weight, parts consolidation, easy manufacturability etc. Continuous Fiber Reinforced Thermoplastics (CFRT) are also gaining popularity because of its ability to achieve high ...
Application of Crack Propagation Simulation of Windshield to Roof Strength Analysis
R. Chikazawa, T. Komamura, S. Yamamoto, T. Yasuki, S. Kojima (Toyota Technical Dev. Corp.)
This paper describes a new modeling method to represent the crack propagation of windshield, namely the laminated safety glass. In the roof strength analysis used for vehicle development process, it is not easy to accurately predict crack propagation paths with existing modeling method, e.g., improving material properties. If the windshield cracks in a test using a prototype vehicle, the body deformation in the simulation and that in the ...
Automated Post Simulation Analysis, Mining, Reporting and Collaboration with d3VIEW
A. Nair, S. Bala (LSTC)
Data management, mining, comparison and presentation play vital roles in utilization of Finite Element Analysis for product design and decision making. Post simulation interpretation of results is largely a manual process and interpretation of data points is limited to only a handful of data points. The capability to perform such tasks seamlessly will reduce workload for an engineer and help focus his attention more on engineering rather than ...
Automated Post-Processing & Report-Generation for Standard Crash & Safety Tests Simulation
T. Nikolaos (BETA CAE Systems S.A.)
There are an increasing number of standardized tests, for which a vehicle should comply with. All these tests, usually, require the generation of a standardized report. For the generation of reports for simulated tests, after each solver run, the followed post-processing actions are always the same. Most of the tasks in the post-processing of simulation of road vehicles crash tests, involve repeated actions while, in certain cases, these ...
BEM Methods For Acoustic and Vibroacoustic Problems in LS-DYNA
M. Souli, Y. Huang, R. Liu (LSTC, University of Lille Laboratoire Mecanque de Lille, JSOL Corp.)
The present work concerns the new capability of LS-DYNA® in solving acoustic and vibroacoustic problems using a new keyword *FREQUENCY_DOMAIN_ACOUSTIC_BEM In vibroacoustic problems, which are assumed to be weak acoustic-structure interactions, the transient structural response is computed first. By applying the FFT, it is transformed into a frequency response. The obtained result is taken as boundary condition for the acoustic part of the ...
Benchmark of Topology Optimization Methods for Crashworthiness Design
C. H. Chuang, R. J. Yang (Ford Motors Company)
Linear structural topology optimization has been widely studied and implemented into various engineering applications. Few studies are found in the literature which deals with nonlinear structures during vehicle impact events. One of the major challenges for nonlinear structural topology optimization is the unavailability of design sensitivities in impact simulations, due to the highly nonlinear and computationally intensive nature of ...
Boundary Element Analysis of Muffler Transmission Loss with LS-DYNA
Z. Cui, Y. Huang (LSTC)
This paper presents a case study of applying the boundary element method (BEM) in LS-DYNA for calculating transmission loss (TL) of mufflers. Both the three-point method and the four-pole transfer matrix method are used for calculating the transmission loss. The three-point method is easier to use, but it solves for the transmission loss only and nothing else. The four-pole method has the advantage of providing transfer matrix of the muffler, ...
Certification by Analysis of a Typical Aircraft Seat
N. Dhole, V. Yadav, G. Olivares (National Institute for Aviation Research)
Advancements in computer hardware in recent years have made it possible to solve complex real world problems using finite element methods (FEM). Full scale dynamic certification testing of aircraft seats is a very complex, expensive and time consuming process. A high acceleration pulse is applied on the seat structure in a short duration of period, and the seat structure has to pass stringent FAA certification criteria. FAA and the aircraft ...
Comparison between Experimental and Numerical Results of Electromagnetic Tube Expansion
J. Shang, S. Hatkevich, L. Wilkerson (American Trim LLC)
Electromagnetic forming is a complex coupled mechanical-thermal-electromagnetic phenomenon. To accurately simulate this high-velocity and high-strain-rate process, electromagnetism (EM) module of LS-DYNA has been developed. In this paper, the predictive ability of the EM module is assessed through a comparison between experimental and numerical results of electromagnetic tube expansion. The experiment was to apply electromagnetic forming for ...
Computer Generation of Sphere Packing for Discrete Element Analysis in LS-DYNA
Z. Han, H. Teng, J. Wang (LSTC)
The constructive algorithms for sphere packing are based on the pure geometrical computation. They are very efficient and robust for building very large sphere packings with millions of spheres in a few minutes. A constructive algorithm has been developed in LS-DYNA for arbitrary 3D geometries with the size distribution control. The brief introduction of the algorithm is presented in this paper. The procedures and some generated sphere ...
Consideration of Orientation Properties of Short Fiber Reinforced Polymers within Early Design Steps
G. Gruber, A. Haimerl, S. Wartzack (Chair of Engineering Design KTmfk. University of Erlangen-Nuremberg FAU)
Abstract Within the modern automotive industry there is an increasing application of parts made of short fiber reinforced polymers (SFRP). The reasons are their beneficial mechanical properties and their series production capability. However, the prediction of their crash behavior by simulation is very complicated, since a precise simulation requires considering the fiber orientation distribution. That’s why, in early design steps often only ...
Crash Impact Modelling Of Security Bollard
S. K. Tay, B. Lim, S. H. Ng (Ministry of Home Affairs)
This paper presents the findings from vehicular crash test of a security bollard system, as well as findings generated from numerical simulations using two different loading approaches in LS-Dyna®. The differences between the results from numerical simulations and test observations are explored by examining the velocity-time history profiles of the vehicle and the rotational response of the bollard. The first approach involved a NCAC ...
Design and Testing of an Easy to Use Pinned-down Temporary Concrete Barrier with Limited Deflections
N. M. Sheikh, R. P. Bligh (Texas Transportation Institute)
In work zones where the space available for placing a temporary concrete barrier is very limited, for example bridge replacement projects, the barrier must be strictly restrained to prevent lateral deflection due to vehicular impact. Among the few restraining or anchoring mechanisms currently available, most designs require through the deck bolting, anchor bolts, or other constraining straps. Such mechanisms are difficult to install, ...
Development of a Full Human Body Finite Element Model for Blunt Injury Prediction Utilizing a Multi-Modality Medical Imaging Protocol
F. S. Gayzik, D. P. Moreno, N. A. Vavalle, A. C. Rhyne, J. D. Stitzel (Wake Forest University School of Medicine, Virginia Tech)
Computational modeling is an increasingly important tool in the study of injury biomechanics. This paper describes the development and validation of a seated human body finite element model as part of the Global Human Body ®Models Consortium (GHBMC) project. The model was developed using LS-DYNA (LSTC, Livermore, CA) and is intended for blunt injury prediction. The geometry of the model is ba sed on a protocol that leverages the strengths of ...
Development of a New Software Architecture for LS-DYNA Applications
Tim Palmer (Engineering Technology Associates, Inc.)
Engineers and researchers are able to carry out complex, multi-physics simulations using LS- DYNA®. The scope of these simulations may include multiple solvers and multiple steps. The variety of simulations available in LS-DYNA® require a complete FE modeling software that allows for creation of all types of elements, materials, contacts and properties. While this complete coverage of all entities is critical, the ability to provide users a ...
Development of Tied Overlapping Shell Technique to Simulate the Path of Crack Propagation in Polymer Parts
S. Kojima, K. Ishibashi (Toyota Tech. Dev. Corp.), T. Yasuki, H. Arimoto (Toyota Motor Corp.)
This paper describes a new finite element modeling technique to simulate the path of crack propagation in polymer parts. In this new technique "tied overlapping shell technique", base and overlapping elements make up the finite element model surface. The overlapping elements are rotated 45 degrees with respect to the base elements and are connected by tied contact. Tied overlapping shell technique decreased mesh pattern dependency of FE ...
Drape Simulation: Textile Material Model for Correct Property Reproduction to Improve the Preform Development Process of Fiber-Reinforced Structures.
O. Döbrich, T. Gereke, Ch. Cherif (Institute of Textile Machinery and High Performance Material Technology, Technische Universität Dresden)
The deformation behavior of textiles requires unconventional assumptions for successful drape simulation. The ®special performances in shearing, stretching and bending were implemented in LS-DYNA with user friendly subroutines. The general deformation behavior was considered by particular strain rates. A fully nonlinear and orthotropic material model was implemented to reproduce the character of the deformation mechanisms, shearing and ...
Dummy Model Validation and its Assessment
S. Stahlschmidt, A. Gromer, Y. Huang, U. Franz (DYNAmore GmbH)
This paper describes the dummy model validation process applied in several FAT and PDB pro- jects. The modeling activities started 19 years ago and the validation process was enhanced continuously during this period.
DYNAFORM 5.8.1 – New Features and Future Development
J. He (DYNAFORM Product Manager, Engineering Technology Associates Inc.)
This presentation will provide details regarding the recent release of DYNAFORM Version 5.8.1. DYNAFORM is an FEA software solution which guides the engineer through a wide range of stages in the manufacturing, from cost estimation and die face design to formability analysis, springback prediction and springback compensation. This version promises to deliver a robust environment for engineers to simulate and analyze the entire die ...
Effect of Soil Material Models on SPH Simulations for Soil-Structure Interaction
R. F. Kulak (RFK Engineering Mechanics Consultants), L. Schwer (Schwer Engineering & Consulting Services)
Currently, civil engineering design practice uses liner elastic soil properties for many soil- structure interaction problems. However, this approach falls short for problems in which the structure and soil undergo large deformations. With the availability of the high-performance computing (HPC) cluster at the United States Department of Transportation’s Transportation Research and Analysis Computing Center [1], transportation researchers ...
Engineering Analysis with Finite Elements - LS-DYNA for Undergraduate Student
J. D. Reid (University of Nebraska-Lincoln)
A typical college course in finite elements consists of learning the method in continuum mechanics (transient heat conduction and elastic stress analysis), from formulation of the governing equations to implementation in some software (such as Fortran or Matlab). This class is not such a course. Instead, this class concentrates on analyzing engineering systems; a challenging task regularly done by design engineers. Finite elements is the ...
Evaluation of Blast Mitigation Capability of Advanced Combat Helmet by Finite Element Modeling
S. Sharma, R. Makwana, L. Zhang (Wayne State University)
Primary blast wave induced traumatic brain injury and posttraumatic stress disorders have been observed in great number among military personnel in the recent Iraq and Afghanistan wars. Although combat helmets provide good protection against blunt/ballistic type threats, the current issue with military helmets is protection concerning the threats from primary blast wave. This study focused on investigating how combat helmets influence the ...
Evaluation of LS-DYNA Material Models for the Analysis of Sidewall Curl in Advanced High Strength Steels
A. Aryanpour, D. E. Green (University of Windsor)
Accurate modelling of the Bauschinger effect and anisotropic plasticity in advanced high strength steels (AHSS) is essential in order to accurately predict sidewall curl. In this study, the performance of several constitutive models from the LS-DYNA library was evaluated for the prediction of sidewall curl in a plane-strain channel draw process for two grades of AHSS (TRIP780 and DP980). Since the profile of the channel section after ...
Experimental Investigation and FE Analysis of Fiber Woven Layered Composites under Dynamic Loading
P. A. Mossakovsky, F. K. Antonov (Reaserch Institute of Mechanics of Lomonosov Moscow State University), M. E. Kolotnikov, L. A. Kostyreva (FSUE), A. M. Bragov, V. V. Balandin (Reaserch Institute of Mechanics of Lobachevsky State University of Nizhni Novgorod)
Woven composites are used in a wide range of industrial applications such as development of individual body armor, aviation, astronautics and others . Thus, it is important to learn the mechanical behavior of the composite and to perform it’s adequate modeling under dynamic impact loading. The paper is concerned with modeling of woven fabric composite made of aramid yarns. The experimental investigation including static tests, dynamic tests ...
Faster Metal Forming Solution with Latest Intel Hardware & Software Technology
N. Meng (Intel Corporation), J. Sun (LSTC), P. J. Besl (Intel Corporation)
Reducing part development time & cost and increasing quality & productivity have always been important goals in the metal forming industry. Quick response to frequent mould change is challenging metal forming simulation engineers in the modern high efficiency production environment. To achieve these goals, a requirement for nearly instant numerical simulation of metal forming processes is emerging. Unfortunately, poor scalability and slow ...
Finite Element Simulations of Blasting and Fragmentation with Precise Initiation
M. Schill (DYNAmore Nordic AB), J. Sjöberg (Luleå University of Technology)
By using blasting caps with electronic delay units, it is possible to control the time of ignition between the boreholes of a mine. This has opened up new possibilities to optimize the blasting in order to achieve a better fragmentation which would significantly reduce the costs for the mining industry. The potential benefits of being able to control the ignition times has been described by Rossmanith [1], where stress wave interaction should ...
Fracture Prediction of High Strength Steels with Ductile Fracture Criterion and Strain Dependent Model of Anisotropy
Kenji Takada (Honda R&D Co.)
Cockcroft-Latham fracture criterion was applied to predict the fracture of high strength steels. Marciniak-type biaxial stretching tests of the four grades of high strength steels were carried out to measure the material constant of Cockcroft-Latham fracture criterion. Furthermore, in order to improve the simulation accuracy, the local anisotropic parameters depending on the plastic strain (strain dependent model of anisotropy) were measured ...
Full Cycle Simulation, Virtual Tryout and Reality Check
Y. Hu, H. Hu, K. Li (Chrysler Group LLC)
Full Process Simulation is the Simulation on all line dies (all nominal design dies) with formability results and final springback results at the end of the line. Full Cycle Simulation is the Simulation on all line dies (all compensated dies) with formability and springback results on panels from each operation. The final operation panel must meet the GD&T tolerance requirements. The final surface quality must meet the NC programming quality ...
General Approach for Concrete Modeling: Impact on Reinforced Concrete
N. Van Dorsselaer, V. Lapoujade (DynAS+), G. Nahas, F. Tarallo, J.-M. Rambach (Institut de Radioprotection et de Sûreté Nucléaire)
In the world of Numerical Simulation, concrete modeling is one of the most complicated aspect engineers have to carry out. In fact, damage and failure occurring during concrete deformation are very complex processes difficult to reproduce with material models. And to make matters worse, material information available for concrete is often much reduced, leaving engineers profess structure performance without sufficient data. ®LS-DYNA has ...
Golf Ball Impact: Material Characterization and Transient Simulation
X. Liu, D. Quinn, J. Bergström (Veryst Engineering)
®This paper presents an LS-DYNA simulation of the impact event when a golf club hits a golf ball. This is a challenging subject for finite element simulations because it is characterized by high strain rate behavior: the impact occurs within milliseconds and the golf ball experiences very large deformation during this period because of the ball’s polymeric shell and core. The simulation strategy emphasizes on accurate material ...
Heat Transfer with Explicit SPH Method in LS-DYNA
J. Xu (LSTC)
In this paper, we introduce an explicit formalism to model heat conduction with Smoothed Particle Hydrodynamics method. With Taylor series approximation and SPH kernel interpolation, a simpler SPH discretization of the Laplace operator can be obtained for the thermal conduction equation. The formulation manifestly conserves thermal energy and is stable in the presence of small-scale temperature noise. This formalism allows us to evolve the ...
Impact Analysis of an Innovative Shock Energy Absorber and its Applications in Improving Railroad Safety
X. Xin, B. K. Parida, A. K. Zaouk, N. Dana, S. K. Punwani
Short Fiber Reinforced Thermoplastics (SFRT) such as glass filled Polyamide 6 and 66 have been widely adopted as a metal replacement in a wide range of industries. The main advantage of using these materials is high strength to weight ratio, light weight, parts consolidation, easy manufacturability etc. Continuous Fiber Reinforced Thermoplastics (CFRT) are also gaining popularity because of its ability to achieve high ...
Impact and Detonation of COMP-B: An Example using the LS-DYNA EOS: Ignition and Growth of Reaction in High Explosives
L. E. Schwer (Schwer Engineering & Consulting Services)
The LS-DYNA keyword *EOS_IGNITION_AND_GROWTH_OF_REACTION_IN_HE provides the ability to model the ignition and growth of the reaction in high explosives via shock initiation from an impact or donor explosive. In this preliminary assessment effort, the experimental results for projectile impact on COMP-B of Almond and Murray (2006) are simulated. In addition to reporting their experimental results, the authors also reported numerical ...
Introduction of a New Function, (CONTROL_FORMING_SCRAP_FALL),in LS-DYNA & Its Applications in Scrap Fall Simulation
J. Gu, Y. Hu, X. Lu (Ford Motor Co.), X. Zhu, L. Zhang (LSTC)
In stamping plants, one of the most common defects is scrap fall failure, in which some of the trimmed scraps do not fall according to the designed chutes or intended path. The scrap fall failure can damage dies or/and panels and cause stamping production line shutdown, which could easily result in millions of dollars lost. This paper is focused on developing effective analytical tools to detect potential scrap fall failures in tool/die ...
Inverse Engineering and Preliminary Simulation of a Closed Profile Roll-forming Line
R. Perez-Santiago, A. Garcia, C. Sarmiento, R. Berlanga, M. Castellanos (Metalsa S.A. de C.V.
), M. Hernandez, P. Zambrano, O. Lopez (Universidad Autónoma de Nuevo León)
Roll-forming is a key technology among Metalsa ́s manufacturing capabilities. The Company’s technology group is conducting research oriented to support future engineering changes and the development of new technology variants. The initial objective of the project is the development of a reliable simulation of one complete roll-forming line using LS-DYNA®. The roll-forming tools were digitized using an optical scanner, converted to 3D parts ...