基于有限元法的振动时效数值模拟与分析  

Numerical Simulation and Analysis of Vibratory Stress Relief Based on Finite Element Method

作　　者：付建科[1] 徐亮[2] 雷小平[3] 金俊 

机构地区：[1]三峡大学机械与动力学院,湖北宜昌443002 [2]国网河南省电力公司电力科学研究院,郑州450052 [3]中国电建集团贵阳勘测设计研究院有限公司,贵阳550081 [4]长江三峡通航管理局,湖北宜昌443002

出　　处：《三峡大学学报（自然科学版）》2017年第4期76-79,共4页Journal of China Three Gorges University：Natural Sciences

基　　金：国家自然科学基金项目(51305232);湖北省重点实验室开放基金项目(2010KJX02)

摘　　要：利用有限元分析软件ANSYS,模拟了圆管对接焊件的焊接过程,得到了焊件的残余应力场,在合理确定了振动时效工艺参数基础上,对焊件扭转振动方式的振动时效过程进行了数值模拟,分析和探讨了扭转振动方式的振动时效对消除残余应力效果的影响.模拟结果表明:在合理的振动时效工艺参数条件下,扭转振动方式的振动时效能有效减小和均化残余应力,残余应力的减小和均化效果随激振力的增大而增大.Numerical simulation of the we welding for round steel pipe is carried out lding process and subsequent vibratory stress relief treating of butt by finite element analysis; and then the residual stress distribution in welding joint is obtained. Based on the reasonable vibration aging process parameters, the vibration aging process of torsional vibration of the weldment is simulated; and the torsional vibration modes of vibration ag- ing to eliminate the effect of residual stress is discussed also. The results show that the torsional vibration ag- ing treatment can effectively reduce and homogenize the residual stress in the welding process. In addition, the decrease of welding residual stress and the effect of homogenization increased with the increase of excita- tion force.

关 键 词：残余应力 扭转振动 振动时效 有限元法 数值模拟 

分 类 号：TH16[机械工程—机械制造及自动化]