计算力学学报2012，Vol.29Issue(1)：129-134,6.
基于美国ASME标准的重载货车车体焊缝疲劳寿命预测
Fatigue life prediction for weld line in heavy freight carbody based on ASME standard
摘要
Abstract
Aiming at finding a more exact method to predict weld line fatigue life in heavy freight carbody during design phase, the fatigue life of armor steel 616 Tee joint is analyzed by various standards. Comparing analysis results and experimental results,the equivalent structural stress method offered by ASME standard is of high accuracy and obvious advantage. A finite element model of a heavy freight carbody including key weld lines is built, fatigue life prediction for these weld lines is performed by means of the equivalent structural stress method and load spectrum of AAR,and weld line of more shorter fatigue life is basically coincident with that in-service carbody. The improved structure of bolsters is to be put forward on the basis of structural stress analysis at weld lines, and fatigue life of the bolsters weld line is increased by 1.7 times.关键词
货车车体/焊缝疲劳寿命/等效结构应力法Key words
freight carhody/weld line fatigue life/equivalent structural stress method分类
信息技术与安全科学引用本文复制引用
谢素明,周晓坤,李向伟,李晓峰..基于美国ASME标准的重载货车车体焊缝疲劳寿命预测[J].计算力学学报,2012,29(1):129-134,6.基金项目
铁道部科技研究开发计划重点课题（2009J005-C （）
2010J001-F）资助项目. （）
