A contact algorithm based on the exponential form of augmented Lagrangian method for implicit materi

• 作 者: Zhen Peng Chen Xiong Zhang
• 机 构: SchoolofAerospaceEngineering,TsinghuaUniversityBeijing100084,China
• 出 处: 第一届无网格粒子类方法进展与应用研讨会
• 发表日期: 2016年8期
• 关键词: contact algorithm augmented Lagrangian method implicit material point method

　　The explicit material point method(EMPM)[1]works well in simulating extreme deformation problems,where the finite element method(FEM)often encounters mesh distortion.However,the implicit material point method(IMPM)[2] is more suitable than EMPM in some cases,such as cutting and upsetting.Because the time step of implicit method can be much larger and numerical oscillation also can be suppressed.