TA1/2A12复合板成形性能的模拟研究  

Simulation study on formabilit of TA1/2A12 composite plates

作　　者：高利涛 刘鑫鑫 卫俊鑫 曹守臻 冯浩[3] 贾燚 韩建超 Gao Litao;Liu Xinxin;Wei Junxin;Cao Shouzhen;Feng Hao;Jia Yi;Han Jianchao(College of Mechanical Engineering,Taiyuan University of Technology,Taiyuan 030024,China;Engineering Research Center of Advanced Metal Composites Forming Technology and Equipment Ministry of Education,Taiyuan University of Technology,Taiyuan 030024,China;Hai'an-Taiyuan University of Technology Advanced Manufacturing and Intelligent Equipment Industry Research Institute,Hai'an 226600,China)

机构地区：[1]太原理工大学机械工程学院,山西太原030024 [2]太原理工大学先进金属复合材料成形技术与装备教育部工程研究中心,山西太原030024 [3]海安太原理工大学先进制造与智能装备产业研究院,江苏海安226600

出　　处：《锻压技术》2025年第1期74-82,共9页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(52275362,51904205);山西省基础研究计划优秀青年培育项目(202203021224003);中央引导地方科技发展资金资助项目(YDZJSX2021A020,YDZX20191400002149);海安太原理工大学先进制造与智能装备产业研究院开放研发项目(HXKT2023133,2023HA-TYUTKFYF038)。

摘　　要：采用Dynaform有限元软件对不同放置顺序的TA1/2A12复合板进行胀形试验模拟,分析了TA1/2A12复合板极限胀形高度、各层板材的应变和减薄率分布情况,并进行胀形试验验证。模拟结果表明,当钛层与铝层分别放置在靠近凸模的位置时,极限胀形高度分别为33.9和32.0 mm。钛层半球底部附近的应力较高,沿TD方向应变较大;铝层应力较小且分布均匀,因此钛层位于半球底部附近的位置先达到极限应变,在复合板结合作用下,铝层相应位置的应变随之增加直至破裂。由胀形试验可得,钛层、铝层分别靠近凸模的位置时,极限胀形高度分别为35.7和33.6 mm,与有限元模拟的极限胀形高度的误差分别为5.3%和5.0%,模拟与实际破裂情况比较吻合,所建立的有限元模型可以较为准确地预测钛/铝复合板的成形性能。The bulging test of TA1/2A12 composite plates with different placement sequence was simulated by finite element software Dynaform.Then,the ultimate bulging height of TA1/2A12 composite plates,the distribution conditions of strain and thinning rate of each layer of plates were analyzed which were verified by bulging test.The simulation results show that when the titanium layer and aluminum layer are placed close to the punch,the ultimate bulging heights are 33.9 and 32.0 mm,respectively.The stress near the bottom of titanium layer hemisphere is high,and the strain along TD direction is larger.The stress on the aluminum layer is small and evenly distributed,so the ultimate strain is reached firstly at the position of titanium layer near the bottom of hemisphere.Under the bonding effect of composite plates,the strain on the corresponding position of aluminum layer increases until it breaks.The bulging tests show that when the titanium layer and the aluminum layer are respectively close to the position of punch,the ultimate bulging height is 35.7 and 33.6 mm,respectively,and the errors between finite element simulation and test in the ultimate bugling height are 5.3%and 5.0%,respectively.The simulation is in good agreement with the actual fracture situation,and the formability of titanium/aluminum composite plates can be accurately predicted by the established finite element model.

关 键 词：钛/铝复合板 胀形 极限胀形高度 应力 减薄率 

分 类 号：TG389[金属学及工艺—金属压力加工]