• CN:11-2187/TH
  • ISSN:0577-6686

›› 1983, Vol. 19 ›› Issue (2): 22-30.

• 论文 • 上一篇    下一篇

薄板氩弧点状加热应力应变过程的数值分析(之一)

关桥;付昱华   

  1. 北京航空工艺研究所
  • 发布日期:1983-03-01

Numerical Analysis of the Stress and Strain Cycles Caused by TIG Spot welding of Thin plate

Guan Qiao;Fu Yuhua   

  1. Beijing Aeronautical Manufacturing Technology Research Institute
  • Published:1983-03-01

摘要: 本文应用有限差分法、有限元素法及微分方程数值解法(适用于出现卸载前)给出了氩弧点状加热二维应力应变过程的数值分析。计算中考虑了材料性质随温度的变化及熔化、凝固过程的处理,并与试验结果进行对比,二者之间的吻合程度较好。将有限差分法用于本研究工作的特点是:运算程序结构简单,占有计算机时少,计算结果的准确性也较高。

Abstract: The numerial analysis of the stress and strain cycles during TIG spot welding of thin plate are presented in this paper. Three methods are used in comparison; method of numerical integration of differential equations (before unloading), finite element method and finite difference method. In this particaular case of axially symmetrical temp erature distribution in a thin disk, the finite difference method has advantages that the computer program could be simplified; consequently, the machine-time for computation could be reduced; and the result with higher accuracy could be obtained. In the developed computer program the material proper ties as function of temperature and melting-solidifying processes of molten zone are taken into consideration. The results of calculations are in a fairly good agreement with the experimental data.