Modeling solutions with jumps for rate-independent systems on metric spaces

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Date
2008
Volume
1347
Issue
Journal
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Publisher
Berlin : Weierstraß-Institut für Angewandte Analysis und Stochastik
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Abstract

Rate-independent systems allow for solutions with jumps that need additional modeling. Here we suggest a formulation that arises as limit of viscous regularization of the solutions in the extended state space. Hence, our parametrized metric solutions of a rate-independent system are absolutely continuous mappings from a parameter interval into the extended state space. Jumps appear as generalized gradient flows during which the time is constant. The closely related notion of BV solutions is developed afterwards. Our approach is based on the abstract theory of generalized gradient flows in metric spaces, and comparison with other notions of solutions is given.

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Keywords
Metric flow, rate-independent systems, quasistatic evolution, vanishing-viscosity limit, parametrized metric solution, approximable solutions
Citation
Mielke, A., Rossi, R., & Savaré, G. (2008). Modeling solutions with jumps for rate-independent systems on metric spaces (Vol. 1347). Berlin : Weierstraß-Institut für Angewandte Analysis und Stochastik.
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