北京交通大学学报2017，Vol.41Issue(1)：62-67,6.DOI:10.11860/j.issn.1673-0291.2017.01.010
城轨列车转向架铝合金焊接枕梁的抗疲劳设计
Anti-fatigue design of aluminum alloy welded bolster of urban rail train bogie
摘要
Abstract
It takes the aluminum alloy bolster of bogie as the study object in this paper.The fatigue life of main welds in bolster was evaluated based on Miner linear cumulative damage theory and NASA small load S-N curve extension method.Calculated work conditions were obtained from measured data in field tests,and fatigue test scheme for bolster was designed.Then measurements of optimizing the thickness of joint stiffeners and minimizing stress concentration were taken in areas that failed to pass the fatigue test.Finally it is verified that the new aluminum alloy bolster of bogie can meet the demand of fatigue life after improvement.关键词
转向架/铝合金/焊接枕梁/疲劳寿命Key words
bogie/aluminum alloy/welded bolster/fatigue life分类
交通工程引用本文复制引用
刘志明,张冉,连青林..城轨列车转向架铝合金焊接枕梁的抗疲劳设计[J].北京交通大学学报,2017,41(1):62-67,6.基金项目
国家科技支撑计划项目资助(2015BAG12B01-10) （2015BAG12B01-10）
铁道部科技发展项目资助(2014J004-A,2015J001-E)National Key Technology Research and Development Program of China (2015BAG12B01-10) （2014J004-A,2015J001-E）
Science and Technology Research and Development Key Program of China Railway Corporation(2014J004-A,2015J001-E) （2014J004-A,2015J001-E）
