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Determination of the Behaviour of Thermoplastics at High Strain-Rates Using the Invariant Theory

For the finite element simulations of polymeric materials mathematical models are needed which cover all the phenomena of the material. In the first part of this paper a new model based on the invariant theory is introduced. With this model it is possible to describe accurately the mechanical behaviour of thermoplastic materials. The second part shows methods for the data processing of the measured data. These data are used for the determination of the model's parameter. A new filter method is introduced which can reduce the superposed oscillations from the measured data.

application/pdf D-III-02.pdf — 2.7 MB