锻压技术

考虑内禀长度的纯铝L2微拉深过程模拟

英文标题：Deep drawing process simulation of pure aluminum L2 considering intrinsic length

作者：王瑞亭李付国陈波薛凤梅李江

单位：西北工业大学

关键词：微拉深纯铝L2 本构函数内禀长度

分类号：TG386

出版年,卷(期):页码：2013,38(1):155-158

摘要：

结合传统拉深成形工艺过程，采用材料的内禀长度来表征微塑性成形过程中的尺度效应，并在建立的三维有限元分析模型的基础上，对纯铝L2的微拉深工艺过程进行数值模拟与分析，研究了纯铝微拉深的塑性成形过程。试验成形出的微拉深件直径在1.4~1.6 mm之间，纵向深度在1.2~1.4 mm之间，拉深力为2.67 N，微拉深试验结果与模拟结果基本吻合。通过试验结果和模拟结果的对比，说明含内禀长度的微塑性本构方程能够用于微拉深成形过程的有限元数值模拟。

Combined with the traditional deep drawing process, the plastic forming process of the scale effect was represented using material intrinsic length, and based on 3D finite element analysis model, the micro deep drawing technology in pure aluminum L2 was simulated and analyzed. The diameter of micro deep drawing is 1.41.6 mm, the vertical depth is 1.21.4 mm and the force is 2.67 N. The test results and simulation results of micro deep drawing are in good agreement. The constitutive equation with intrinsic length can be used for the micro deep drawing process of the finite element numerical simulation.

基金项目：

航空科学基金资助项目（2011ZE53059）

参考文献：

［1］单德彬,袁林,郭斌.精密微塑性成形技术的现状和发展趋势[J].塑性工程学报，2008,15(2):46-53.

［2］张庆丰,周旭东,杨涤心.塑性微成形技术的发展[J].热加工工艺技术与装备,2006,(10):32-37.

［3］Engel U, Eckstein R. Microforming from basic research to its realization[J]. Journal of Materials Processing Technology,2002,125126:35-44.

［4］Erhadt R, Schepp F, Sdmoechkel D. Micro forming with local part heating by laser irradiation in transparent tools[A].Proceedings of the SheMet[C]. Bamberg, 1999.

［5］Saotome Y, Yasuda K, Kaga H. Microdeep drawability of very thin sheet steels[J].Journal of Materials Processing Technology, 2001,113:641-647.

［6］Vollertsen F, Hu Z, Niehoff H S, et al. State of the art in micro forming and investigations into micro deep drawing[J]. Journal of Materials Processing Technology, 2004,151:70-79.

［7］席庆标,董湘怀.微拉深成形工艺及模具设计研究[J].锻压技术,2007,32(4):57-61.

［8］郭斌,王春举,单德彬,等.基于微塑性成形的微型零件批量制造技术[J].功能材料与器件学报,2008,14(1):278-282.

［9］刘会霞,李保春,杨昆,等.金属箔板激光动态微拉深成形技术[J].光电子,2009,20(3):363-365.

［10］Luo J, Lin J. A study on the determination of plastic properties of metals by instrumented indentation using two sharp indenters[J]. International Journal of Solids and Structures,2007,44(1819):5803-5817.

［11］Dao M, Chollacoop N, Van Vliet K J, et al. Computational modeling of the forward and reverse problems in instrumented sharp indentation[J]. Acta Materialia,2001,49(19):3899-3918.

［12］吴波,魏悦广,谭建松,等.纳米晶Ni晶间断裂的数值模拟[J].金属学报,2009,45(9):1077-1082.

［13］江五贵, YAN C,曲绍兴.摩擦因素对不同形状压头微压痕测试的影响[J].力学,2010,31(2):236-242.

［14］秦江,黄克智,黄永刚.采用特征线方法对混合硬化情况下基于变形机制的应变梯度工程塑性理论的研究[J].工程力学,2009,26(9):176-185.

［15］周益春,郑学军.材料的宏微观力学性能[M].北京：高等教育出版社,2009.

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