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Compared with the traditional rigid plastic/rigid viscoplastic(RP/RVP) FEM(based on iteration solution),RP/RVP FEM based on linear programming (LP) has some remarkable advantages,such as it’s free of convergence problem and its convenience in contact,rigid zone,and friction force treatment.The numerical model of RP/RVP FEM based on LP for axisymmetrical metal forming simulation is studied,and some related key factors and its treatment methods in formulation of constraint condition are proposed.Some solution examples are provided to validate its accuracy and efficiency.
Compared with the traditional rigid plastic / rigid viscoplastic (RP / RVP) FEM (based on iteration solution), RP / RVP FEM based on linear programming (LP) has some remarkable advantages, such as it’s free from convergence problem and its convenience in contact , rigid zone, and friction force treatment. numerical models of RP / RVP FEM based on LP for axisymmetrical metal forming simulation is, and some related key factors and its treatment methods in formulation of constraint conditions are proposed. Home solution examples are provided to validate its accuracy and efficiency.