On configurational forces in hyperelastic materials under shock and impact

Timmel, M.; Kaliske, M.; Kolling, S.; Mueller, R.
January 2011
Computational Mechanics;Jan2011, Vol. 47 Issue 1, p93
Academic Journal
In the present work, we discuss configurational forces (also known as material forces) in the context of numerical simulations of short-time dynamical problems with an explicit finite element solver. In extension to the work presented in Kolling and Mueller (Comput Mech 35:392-399, 2005), the fully 3D-case for hyperelastic materials and large strains is shown. The intention of the present paper is the investigation of the influence of inertia effects, which become increasingly important at high strain rates. At first, the dynamical part of configurational forces will be discussed at moderate strain rates. Finally, we use configurational forces in the context of shockwave propagation.


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