A Numerical Method for Rigid-plastic FEM Analysis Basing on Mathematical Programming  

作　　者：Li Di Lin Zhongqin Chen Guanlong Zhang Weigang Li Shuhui 

机构地区：[1]School of Mechanical Engineering, Shanghai Jiaotong Univ., Shanghai,200030, China [2]Shandong University of Technology, Zibo, PR China School of Mechanical Engineering, Shanghai Jiaotong Univ., Shanghai,200030, China School of Mechanical Engineering, Shanghai Jiaotong Univ., Shanghai,200030, China School of Mechanical Engineering, Shanghai Jiaotong Univ., Shanghai,200030, China School of Mechanical Engineering, Shanghai Jiaotong Univ., Shanghai,200030, China

出　　处：《上海交通大学学报》2004年第z2期32-37,共6页Journal of Shanghai Jiaotong University

摘　　要：The rigid-plastic analysis of mental forming simulation is formulated as a discrete nonlinear mathematical programming problem with equality and inequality constraints by means of the finite element technique. An iteration algorithm is used to solve this formulation, which distinguishes the integration points of the rigid zones and the plastic zones and solves a series of the quadratic programming to overcome the difficulties caused by the nonsmoothness and the nonlinearity of the objective function. This method has been used to carry out the rigid-plastic FEM analysis. An example is given to demonstrate the effectiveness of this method.

关 键 词：RIGID-PLASTIC MATHEMATICAL PROGRAMMING FINITE ELEMENT method 

分 类 号：N55[自然科学总论]