采用本征应变重构技术, 以小孔法测试的少量应力数据为基础, 利用热弹性有限元法构造出4 mm厚铝合金搅拌摩擦焊接接头的纵向残余应力场; 研究了表征本征应变的多项式阶数和试验数据量对构造残余应力场结果的影响。结果表明: 在少量测试数据的基础上对数据进行插值拟合处理, 采用10阶以上切比雪夫多项式表征本征应变, 可构造出与试验结果符合较好的纵向残余应力场; 试验数据需包含特征区域的应力值才能较准确构造出该区域的应力分布。
所属栏目
物理模拟与数值模拟江苏科技大学博士启动基金资助项目(35061107); 江苏科技大学本科创新项目(2012147)
收稿日期
2012/10/132013/8/7
作者单位
杨晓锋:江苏科技大学 先进焊接技术省级重点实验室, 镇江212003
刘川:江苏科技大学 先进焊接技术省级重点实验室, 镇江212003
李佳伟:江苏科技大学 先进焊接技术省级重点实验室, 镇江212003
叶坤:江苏科技大学 先进焊接技术省级重点实验室, 镇江212003
王辉煌:江苏科技大学 先进焊接技术省级重点实验室, 镇江212003
王钱浦:江苏科技大学 先进焊接技术省级重点实验室, 镇江212003
备注
杨晓锋(1989-), 男, 福建长汀人, 本科生。
引用该论文:
YANG Xiao-feng,LIU Chuan,LI Jia-wei,YE Kun,WANG Hui-huang,WANG Qian-pu.Reconstruction of Residual Stress Field in A Fricition Stir Welding Joint of Aluminium Alloy Plate Based on Eigenstrain Reconstruction Method[J].Materials for mechancial engineering,2013,37(10):96～100
杨晓锋,刘川,李佳伟,叶坤,王辉煌,王钱浦.基于本征应变重构技术构造搅拌摩擦焊接铝合金薄板接头的残余应力场[J].机械工程材料,2013,37(10):96～100
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