Conservation de l'énergie et maillages évolutifs en dynamique
Application aux calculs de propagation de ssure avec remaillage
关键词:
remeshing, dynamic fracture mechanics, numerical stability, energy balance摘要
This paper presents a general study of the stability of variable-mesh dynamic calculations using an energy approach. This study, whose scope is limited to the calculation of dynamic crack propagation with remeshing, enables us to establish the conditions which are necessary to ensure stability and allow control of energy transfers during the evolution of the mesh. The results obtained on an sample problem are analyzed to illustrate the effectiveness of the proposed methods.
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