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- W4309955905 abstract "The modeling of cracks has been an intensely researched topic for decades - both from the mechanical as well as from the mathematics point of view. As far as the modeling of sharp cracks/interfaces is concerned, the resulting free boundary problem is numerically very challenging. For this reason, diffuse approximations in the sense of phase-field theories have become very popular. Within this paper, the focus is on rate-independent damage models. Since the resulting phase-field energies in general are non-convex, we are faced with a discontinuous evolution of the phase-field variable. Solution concepts have to be carefully chosen in order to predict discontinuities that are physically reasonable. We focus here on the concept of balanced viscosity solutions and develop a convergence scheme that combines alternate minimization with a local minimization ansatz due to Mielke/Efendiev, [EM06]. We proof the convergence of the incremental solutions to balanced viscosity solutions. Moreover, the discretization concept is implemented and several carefully selected examples show the performance of this combined approach. Particularly, the effect of different norms and arc-length parameters in the local minimization scheme is investigated." @default.
- W4309955905 created "2022-11-30" @default.
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- W4309955905 date "2022-11-23" @default.
- W4309955905 modified "2023-09-27" @default.
- W4309955905 title "Approximation of balanced viscosity solutions of a rate-independent damage model by combining alternate minimization with a local minimization algorithm" @default.
- W4309955905 doi "https://doi.org/10.48550/arxiv.2211.12940" @default.
- W4309955905 hasPublicationYear "2022" @default.
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