Validating Material Information for Stochastic Crash Simulation Part 1: Quasi-Static Properties

This paper describes the steps in validating material information for stochastic simulation using a quaisi-static tensile test experiment. Sources of physical noise usually present in a testing environment such as variation in material properties, geometry and boundary conditions are included as inputs to Finite Element models. This work is carried out in the context of a research project supported by the Automotive Industry in the Midlands. The broad aim of the project is to establish a material properties validation process for crash simulation. Stochastic models of representative components and small assemblies in a vehicle structure, in addition to tensile testing of coupons, will be created and will form an essential part of the verification process. All models will be validated through experimental testing and these investigations will establish variations in material properties and the significance of dependencies such as strain rate and form induced thinning. Stochastic simulation is a CAE tool, enabling the support of robust engineering design. Robust engineering design is viewed as an essential part of automotive product development.