Abstract
For practical application in engineering numerical simulations are required to be reliable and reproducible. Unfortunately crash simulations are highly complex and nonlinear and small changes in the initial state can produce big changes in the results. This is caused partially by physical instabilities and partially by numerical instabilities. Aim of the project is to identify the numerical sensitivities in crash simulations and suggest methods to reduce the scatter of the results. Work has been undertaken to identify sources of sensitivities through parameter studies, to improve existing mathematical formulations, e.g. of contact-impact and material models. Furthermore a tool is developed for generation of code from mathematical descriptions of finite elements with the aim to reduce effort required to make modifications of implementations of FEM models.
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Eck, C., Mangold, O., Prohl, R., Tkachuk, A. (2013). Reduction of Numerical Sensitivities in Crash Simulations on HPC-Computers (HPC-10). In: Nagel, W., Kröner, D., Resch, M. (eds) High Performance Computing in Science and Engineering ‘12. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-33374-3_39
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DOI: https://doi.org/10.1007/978-3-642-33374-3_39
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