铝合金锥形件强旋壁厚与旋压力分布研究  

Research on Distribution of Wall Thickness and Spinning Force on Power Spinning for Aluminum Alloy Conical Parts

作　　者：张晋辉 牛婷 温凯 谢瑞珍 李伯琼 ZHANG Jinhui;NIU Ting;WEN Kai;XIE Ruizhen;LI Boqiong(School of Mechanical Engineering, Jinzhong University, Jinzhong 030619, China)

机构地区：[1]晋中学院机械学院,山西晋中030619

出　　处：《兵器装备工程学报》2020年第8期239-243,共5页Journal of Ordnance Equipment Engineering

基　　金：山西省青年科技研究基金项目(201801D221095);山西省高等学校科技创新项目(2019L0888,2019L0891);晋中学院“1331工程”创客团队建设计划项目(jzxycktd2019024);晋中学院博士科研启动经费项目(jzxybsjjxm2018001)。

摘　　要：基于ABAQUS建立了LF2M铝合金锥形件强旋有限元模型,对模拟中壁厚的控制计算、法向应变分布、壁厚及旋压力分布规律进行了研究。结果表明:靠近芯模小端处法向应变相对较小,成形区法向应变均小于已成形区相应法向应变,法向应变极值主要位于成形区上部附近;靠近芯模小端和凸缘大端厚度与坯料厚度接近,圆角过渡区域厚度逐渐减小,壁厚减薄区域厚度均较小,最终达到所要求的壁厚;在旋压稳定阶段,轴向旋压力先减小后增大,径向旋压力逐渐减小,周向旋压力以较小值在一定范围内波动,轴向旋压力>径向旋压力>周向旋压力,周向旋压力相对很小。A 3D finite element power spinning model of al alloy LF2M conical parts was established by software ABAQUS.Then,the control calculation of the wall thickness,the normal strain distribution,the distribution law of the wall thickness and spinning forces were discussed and investigated based on the finite element model.The results show that,the normal strain near the mandrel small end is relatively smaller,and that of the forming zone relative to the formed zone is smaller.The extrema are mainly located near the upper part of the forming zone.The wall thickness near the mandrel small end and that of the flange big end is basically close to the blank thickness,and that of the fillet transition zone gradually decreases.The wall thickness of the wall thickness thinning zone is relatively lesser,and eventually achieves the required values.In the stable stage for spinning,axial spinning force decreases first and then increases,while radial spinning force gradually decreases and hoop spinning force fluctuates in someone certain range with a small value.The order of the component of spinning force is following with axial spinning force>radial spinning force>hoop spinning force,and hoop spinning force is relatively tiny.

关 键 词：铝合金 锥形件 强旋 壁厚 旋压力 ABAQUS 

分 类 号：TG306[金属学及工艺—金属压力加工]