Y25型转向架多层多道的焊接变形数值模拟  

Welding deformation numerical simulation of multi-layer and multi-pass welding on Y25 type bogieon Y25 type bogie

作　　者：徐紫薇 吉超 陈鹏[2] 朱忠尹[2] 张勇军[2] 

机构地区：[1]成都工贸职业技术学院,四川成都611731 [2]西南交通大学焊接实验室,四川成都630031

出　　处：《电焊机》2016年第9期114-117,共4页Electric Welding Machine

摘　　要：针对Y25型转向架的焊接工艺特点,采用焊接数值模拟软件SYSWELD,通过热弹塑性有限元方法,对Y25型转向架侧梁进行了热弹塑性有限元模拟,得出了采用不同焊接方向时侧梁的变形规律。结果表明,在几种焊接方向下侧梁发生的变形趋势基本一致,但在不同的焊接方向下产生的角变形平均值变化率达到了7.82%,该变化率与选取的模拟方向有关;在不进行对称焊接的情况下,改变焊接方向不可能完全改变焊接变形的趋势。Based on the multi-layer and multi-pass characteristics of Y25 type bogie, this paper uses the welding numerical simulation software SYSWELD, by means of thermal elastic-plastic finite element method, simulating on the side beam of Y25 type bogie, to get the influence rule of the welding deformation under different welding direction. The results show that,first,the welding deformation trend is essentially the same under the different kinds of simulated welding direction,which means the welding direction influences the welding deformation trend. The percentage of the average angular deformation under different direction reaches to 7.82%. Under the condition of not using symmetry welds, the effect is limited by changing the direction of welding to reduce welding deformation.

关 键 词：转向架 多层多道焊 数值模拟 

分 类 号：TG404[金属学及工艺—焊接]