挤压模具型腔轮廓形状的多目标优化设计  

Multi-objective optimal design of die cavity profile in extrusion processes

作　　者：邹琳[1] 夏巨谌[1] 胡国安[1] 

机构地区：[1]华中科技大学,武汉市430074

出　　处：《锻压机械》2002年第4期41-43,共3页Metalforming Machinery

基　　金：湖北省科技厅支持项目(991P0201)

摘　　要：采用刚粘塑性有限元分析和优化算法相结合,利用三次样条函数插值表达挤压模具型腔轮廓形状,以修正的序列二次规划法为优化方法,对挤压模具型腔轮廓形状进行了多目标优化设计,建立了多目标优化的数学模型。优化结果采用有限元软件MARC/AutoForge进行了数值模拟,验证了优化结果的有效性。在气门的实际生产实践中,证明了这种方法对提高模具寿命是十分显著的。Upon combination of rigid viscoelastic FEM analysis with an optimizing algorithm a method of cubic -spline function interpolation has been used to represent the extrusion die cavity profile on which multi-objective optimal design has hence realized using updated SQP(Sequential Quadratic Programming)method and mathematic model of multi-objective has been established of which the optimal re-sults have proved to be effective by numerical simulation with the finite element code MARC/AutoForge,which has also been proved to be quite effective to prolong the service life of mould in air valve production.

关 键 词：挤压模具 型腔轮廓 多目标优化设计 刚粘塑性有限元 

分 类 号：TG375.41[金属学及工艺—金属压力加工]