• CN:11-2187/TH
  • ISSN:0577-6686

›› 1987, Vol. 23 ›› Issue (2): 1-9.

• 论文 •    下一篇

薄板氩弧点焊应力应变过程的数值分析(之二)——钛合金焊接应力应变规律的特点

曹阳;关桥;刘纪达   

  1. 北京航空工艺研究所
  • 发布日期:1987-03-01

NUMERICAL ANALYSIS OF THE STRESS-STRAIN CYCLES CAUSED BY GTA SPOT WELDING OF THIN PLATE-THE FEATURES OF WELDING THERMAL ELASTO-PLASTIC STRESS—STRAIN CYCLES OF TITANIUM ALLOYS

Cao Yang;Guan Qiao;Liu jida   

  1. Beijing Aeronautical Manufacturing Technology Research Institute
  • Published:1987-03-01

摘要: 本论文对轴对称二维状态下的焊接应力应变过程的数值分析程序进行了相应的修正,计算分析了钛合金氩弧点焊应力应变过程并与铝合金、不锈钢计算结果进行了比较,揭示了钛合金焊接热弹塑性应力应变过程所特有的规律。用所发展的焊接热应变云纹测试技术对数值分析程序的计算结果进行了校验,在瞬态及残余状态下计算与测试结果均吻合较好,这表明数值分析程序较真实地反映了点焊应力应变实际过程。

Abstract: In this paper the relevant modifications have been made for program for numerical analysis of stress-strain cycles during GTA spot welding of two dimensional and axle symmetrical thin plates. The stress-strain cycles during GTA spot welding of Titanium alloy plates have been calculated using modified program and their results have been compared with those of Aluminium alloys and stainless steel. The features of the welding thermal elasto-plastic stress-strain cycles of Titanium alloys have been revealed from those results. The program of numerical analysis has been examined by means of Moire technique specially developed for assessing welding thermal strains. The calculated results and the experimental tones in transient and residual conditions are identical, thus shows that the analysis program could authentically describe the stress-strain cycles during GTA spot welding.