TA1板材对角拉伸试验及数值模拟研究  

Experiment and simulation research of Yoshida Buckling Test on TA1 sheet

作　　者：郭禅[1] 郎利辉[1] 蔡高参[1] 郭瑞杰[2] 刘康宁[1] 杨希英[1] 

机构地区：[1]北京航空航天大学机械工程及自动化学院,北京100191 [2]郑州科技学院机械工程系,河南郑州450000

出　　处：《锻压技术》2015年第2期138-144,共7页Forging & Stamping Technology

基　　金：国家自然科学基金资助项目(51175024)

摘　　要：为了测试钛合金材料的抗皱性能,以及验证塑性成形仿真软件对起皱问题的预测精度,选取了钛合金TA1材料进行方板对角拉伸试验,同时对试验过程进行数值模拟分析,对比试验结果和模拟结果,验证了数值模拟的准确性。在方板对角拉伸试验的数值模拟过程中,通过设置不同的扰动类型来替代外界影响因素,以及不同的单元阶次、算法等模拟参数,来分析各类模拟参数对数值模拟结果的影响规律。结果表明,不同的扰动类型对模拟结果产生的影响很小,采用二次单元和静态算法的数值模拟结果与试验结果基本一致,因此能够有效预测由不均匀拉应力引起的板材起皱现象。The experiment and simulation research of Yoshida Buckling Test on TAI sheet were conducted in order to test the wrinkle be- havior of Titanium alloy material and to verify the prediction accuracy of FEM simulation about wrinkle problem. The results of simulation were verified by the comparison of test results. Some parameters were set to analyze the influence on results during the simulation process such as disturbance forms which were used to replace the outside influence, the order of unit and the algorithm. Results show that the dis- turbance forms have a little effect on simulation results, and the static algorithm with second-order unit can accurately predict the wrinkling appearance caused by uneven tension stress because of the consistency between the test results and simulation results.

关 键 词：钛合金 方板对角拉伸 起皱 数值模拟 

分 类 号：TG115.52[金属学及工艺—物理冶金]