A Cup Forming Optimization Using a New Method for Stress Equivalent Static Loads
process depend on the shape parameters of the blank shape.Structural optimization has been applied to obtain the desired shape of sheet metal forming.The equivalent static loads method for non linear static response structural optimization (ESLSO) has been utilized to perform sheet metal forming optimization since nonlinear dynamic analysis is required in sheet metal forming analysis.In the method, equivalent static loads (ESLs) are defined based on the strains.Strain ESLs are static loads that generate the same displacement as well as the strain fields of linear static analysis as those of nonlinear dynamic analysis.In this paper, a new method for stress ESLs is presented using a similar concept of the method to calculate strain ESLs by redefining the value of the material properties.That is, ESLs that generate the same displacement as well as the stress fields of linear static analysis as those of nonlinear dynamic analysis are used in the optimization process.A cup sheet metal forming optimization problem is solved to obtain the desired shape using the stress ESLs.The forming process is analyzed by LS-DYNA, and NASTRAN is used for optimization.
Structural Optimization Shape Optimization Forming Optimization ESLSO
Hwan-Hak Jang Han-Kyo Jung Gyung-Jin Park
Dept.of Mechanical Engineering,Hanyang University,133-791,Seoul,Korea Dept.of Mechanical Engineering,Hanyang University,426-791,Ansan,Korea
国际会议
黄山
英文
1-2
2012-06-18（万方平台首次上网日期，不代表论文的发表时间）