Implementation of the extended finite element method for dynamic thermoelastic fracture initiation

INTERNATIONAL JOURNAL OF SOLIDS AND STRUCTURES

卷:47

Article

Zamani, Arash¹  Eslami, M. Reza¹ 

[1] Amirkabir Univ Technol, Dept Mech Engn, Tehran 15914, Iran

关键词: Thermoelasticity;    Shock;    XFEM;    Fracture;    SIF;   

DOI  :  10.1016/j.ijsolstr.2010.01.024

来源: Elsevier

【 摘 要 】

The eXtended Finite Element Method (XFEM) is implemented to model the effect of the mechanical and thermal shocks on a body with a stationary crack. The classical thermoelasticity equations are considered. The Newmark and the Crank-Nicolson time integration schemes are used to solve the dynamical system of matrix equations obtained from the spatial discretization of the elastic and thermal parts respectively. The variation of dynamical stress intensity factors versus time are computed by the interaction integral method. A C++code is developed to do the different stages of the calculations from mesh generation to the calculation of interaction integrals. Several elastic and thermoelastic numerical examples are implemented, where the dynamical behaviour of the face and tip enrichments of XFEM are investigated and the results are discussed in detail. (C) 2010 Elsevier Ltd. All rights reserved.

【 授权许可】

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