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This paper discusses the calculation of discrete material forces within the Finite Element Method. The possible use of these discrete material forces in r- and h-adaptive procedures is demonstrated by two short examples from non-linear elasticity.
The theory of configurational forces is applied to standard dissipative materials. As a computational example, the method is used to analyze a crystal plastic material law, which assumes flow in the basal and prismatic slip systems of a hexagonally close packed crystal. The material data mimic titanium. Numerical examples include the driving force on a crack interacting with a grain boundary. A simple...
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