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摘要：
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以锻件晶粒尺寸细小均匀为目标,以预成形形状设计为对象,提出了锻造成形过程微观组织优化设计方法,构建了锻造成形过程微观组织优化目标函数,并确定锻造成形预成形形状作为优化过程的设计变量,给出了优化设计的具体步骤,采用微观遗传算法和有限元模拟方法开发了锻造过程微观组织优化程序,并对典型的圆柱体镦粗进行了面向微观组织优化的预成形设计,取得了较好的效果。
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An optimization design method of the microstructure in forging process is proposed.The optimal objective is to obtain the fine and symmetrical grain size.The optimal object is the preform shape.The grain size objective function are put forward.The preform shape is used as the optimal design variables.Using the genetic arithmetic and FEM simulation,the software for optimal design method of the microstructure in forging process based on preform design is developed.The preform design of the cylinder upsetting process realizes the optimization of the final microstructure.
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基金项目：
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国家自然科学基金资助课题(50475130);;
教育部新世纪优秀人才支持计划资助课题(教技司[2005]290号)
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作者简介：
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参考文献：
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[1]赵新海.基于有限元模拟的锻造过程优化设计方法研究[D].山东:山东大学博士学位论文,2001.
[2]Kang B S,Kim N,Kobayshi S.Computer-aided preform de-sign in forging of an airfoil section blade[J].InternationalJournal of Machine Tools&Manufacture,1990,30(1):43 52.
[3]Park J J,Rebelo N,et.al.New approach to preform designin metal forming with the finite element method[J].Interna-tional Journal of Machine Tools and Manufacture,1983,23(1):71 79.
[4]赵国群,王广春,等.材料塑性成形过程最优化设计-II:灵敏度分析方法在模具设计中的应用[J].塑性工程学报,1999,6(3):1 6.
[5]王广春,管婧,马新武,等.金属塑性成形过程的微观组织模拟与优化技术研究现状[J].塑性工程学报,2002,9(1):1 5.
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