In this paper we focus on the thermo-mechanical model proposed in Bourdin et al. (2014) and Marigo et al. (2013) which describes crack genesis and propagation in brittle materials induced by a thermal shock. Our goal is to provide an efficient numerical technique which employs a computational finite element mesh finely customized to the problem at hand to simulate such phenomena in a 2D setting. In particular, we generate automatically adapted anisotropic grids able to closely follow the narrow bands of the damage, driven by a theoretically sound mathematical tool. We carry out three numerical tests to assess the computational performance of the proposed method.

Anisotropic mesh adaptation for crack propagation induced by a thermal shock in 2D

FERRO, NICOLA;Micheletti, Stefano;Perotto, Simona
2018

Abstract

In this paper we focus on the thermo-mechanical model proposed in Bourdin et al. (2014) and Marigo et al. (2013) which describes crack genesis and propagation in brittle materials induced by a thermal shock. Our goal is to provide an efficient numerical technique which employs a computational finite element mesh finely customized to the problem at hand to simulate such phenomena in a 2D setting. In particular, we generate automatically adapted anisotropic grids able to closely follow the narrow bands of the damage, driven by a theoretically sound mathematical tool. We carry out three numerical tests to assess the computational performance of the proposed method.
Anisotropic grids; Brittle materials; Crack propagation; Finite elements; Mesh adaptation; Computational Mechanics; Mechanics of Materials; Mechanical Engineering; Physics and Astronomy (all); Computer Science Applications1707 Computer Vision and Pattern Recognition
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11311/1039942
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