Finite Deformation Modeling of Crystalline Defects in Hyper-elastic Material
An updated Lagrangian formulation is established to deal with the finite deformation of hyper-elastic body including the discontinuous slips due to the nucleation of lattice defects.The prin- ciple of virtual power is modified to treat the discontinuous deformation measured by initial lattice and a computational model is established by a penalty method with Lagrange multiplier.A few ex- amples are shown for the application of geometrically non-linear deformation of hyper-elastic body including some dislocation structures and they are compared with the solutions of linear elasticity.The results have showed that the proposed method can be applicable to the analysis of kink deforma- tion which had been observed experimentally in long-period stacking ordered magnesium alloy.
Computational Mechanics Finite Deformation Hyper-elasticity Driving Force
Akihiro Nakatani Mitsuhiro Akita
Department of Adaptive Machine Systems,Osaka University,Suita,Osaka 565-0871,Japan
国际会议
北京
英文
1-7
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）