Approximation und Rekonstruktion von Spannungen in der Momentankonfiguration für hyperelastische Materialmodelle

Numerical simulation techniques are an essential component for the construction, design and optimisation of cutting-edge technologies as for example innovative products, new materials as well as medical-technical applications and production processes. These important developments pose great demands on quality, reliability and capability of numerical methods, which are used for the simulation of these complex problems. Challenges are for example capture of incompressibility, anisotropy and discontinuities. Existing computer-based solution methods often provide approximations which cannot guarantee substantial, absolutely necessary stability criteria respectively fulfill them. Especially in the field of geometrical and material non-linearity such uncertainties appear. Typical problems are insufficient or even pathological stress approximations due to unsuitable approximation spaces as well as weak convergence behaviour because of stiffening effects or mesh distortion. Similar problems arise in the framework of crack and contact problems. Here the resolution of the local discontinuities as well as their evolution plays a key role. The scientists of the SPP 1748 have set themselves the goal to establish a new quality in the area of non-conventional discretisation methods. Herein the work programme of the SPP is founded:

1. The evolution of modern non-conventional discretisation methods,
2. their mathematical analysis and
3. the exploration of their application limits on the basis of suitable benchmark problems

Projektleitung
Bertrand, Fleurianne Prof. Dr. (Details) (Computational Mathematics (J))

Beteiligte externe Organisationen

Mittelgeber
DFG: Sachbeihilfe

Laufzeit
Projektstart: 09/2019
Projektende: 08/2022

Forschungsbereiche
Mathematik, Mechanik

Zuletzt aktualisiert 2020-01-06 um 19:56