Fatigue Assessment of Welded Structure Based on Measured Dynamic Stress and IIW Standard
Fatigue of welded structure is a complicated process, the fatigue life prediction technology is researched. According to the results of finite element analysis and design requirements, the dynamic stress measuring points are located. Using the high accuracy data acquisition system to acquire dynamic strain, and then the signal processing such as spark removal, filtering, rain-flow counting and spectrum processing have been carried out. Based on the Miner cumulative fatigue damage theory and the weld joint S-N curve data provided by International Institute of Welding (IIW) standard, the fatigue life is obtained in a certain probability. A welded bracket example shows the feasibility of this method.
welded structure fatigue life dynamic stress IIW standard
DING Yanchuang GUO Jinying WANG Jintian ZHAO Wenzhong
School of Mechanical Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning, China Changch School of Mechanical Engineering, Dalian Jiaotong University, Dalian 116028, Liaoning, China Changchun Railway Vehicles Co., Ltd, Changchun 130024, Jilin, China
国际会议
The 2010 International Symposium on Safety Science and Technology(2010 安全科学与技术国际会议)
杭州
英文
1870-1875
2010-10-26（万方平台首次上网日期，不代表论文的发表时间）