起重运输机械Issue(18)：46-51,6.
焊接残余应力对实腹式伸缩臂架稳定性影响
姚峰林 1丁凡志 1杨旭 1赵明杰 1李帅1
作者信息
- 1. 太原科技大学机械工程学院 太原 030024
- 折叠
摘要
Abstract
The uneven temperature field in the welding process causes high residual stress around the weld which may affect the bearing capacity of the structure.Considering the welding residual stress produced in the manufacturing process of the solid-bellied telescopic boom in the mobile crane,in this paper,taking the U-shaped telescopic boom of a truck crane as the research object,the welding residual stress was simulated by using the thermal-elastic-plastic method and the inherent strain method,and the distribution of the residual stress was obtained,and the results of the two methods were analyzed and compared.The residual stress results were introduced into the boom model,and the initial defects of the boom ere simulated by the uniform defect mode method followed by the analysis of nonlinear stability.The results show that the residual stress led to a decrease of 6.63%of the critical buckling load of the boom.关键词
汽车起重机/伸缩臂架/焊接残余应力/稳定性/分析Key words
truck crane/telescopic boom/welding residual stress/stability/analysis分类
机械制造引用本文复制引用
姚峰林,丁凡志,杨旭,赵明杰,李帅..焊接残余应力对实腹式伸缩臂架稳定性影响[J].起重运输机械,2024,(18):46-51,6.
