A yield function for single crystals containing voids

作者：Han X; Besson J; Forest S^*; Tanguy B; Bugat S

来源：International Journal of Solids and Structures, 2013, 50(14-15): 2115-2131.

DOI：10.1016/j.ijsolstr.2013.02.005

• Porous media
• Single crystal
• Variational approach
• Yield criterion
• Unit cell model

A yield function for single crystals containing voids has been developed based on a variational approach. This first yield function is phenomenologically extended by modifying the dependence on the mean stress and introducing three adjustable parameters. Unit cell finite element calculations are performed for various stress triaxiality ratios, main loading directions and porosity levels in the case of a perfectly plastic FCC single crystal. The three model parameters are adjusted on the unit cell calculations so that a very good agreement between simulation results and the proposed model is obtained.

• 出版日期2013-7
• 单位中国地震局