300km/h电动车组柴田式密接车钩弹塑性有限元分析及损伤计算  

ELASTIC-PLASTIC FINITE ELEMENT ANALYSIS AND DAMAGE COMPUTATION OF CHAITIAN TIGHT-LOCKED COUPLER FOR 300 km/h ELECTRIC MULTI-UNITS(EMU) VEHICLES

作　　者：王建斌[1] 王起梁[2] 邬平波[1] 赵永翔[1] 

机构地区：[1]西南交通大学牵引动力国家重点实验室,成都610031 [2]中国南车集团戚墅堰机车车辆工艺研究所,常州213011

出　　处：《机械强度》2010年第1期153-157,共5页Journal of Mechanical Strength

基　　金：国家高技术研究发展计划(863计划)(2006AA04Z406);国家重点基础研究发展计划(973计划)(2007CB714700);新世纪优秀人才基金(NCET-07-0717)资助~~

摘　　要：根据列车连挂作业车钩冲击力历程,分析国产300km/h电动车组柴田式密接车钩钩体和钩舌相互接触作用过程。在强度计算的多步分析中,根据载荷条件依次建立接触对,保证接触平滑和计算稳定。根据强度计算结果,分析钩体的薄弱部位及应力应变水平,为车钩的抗冲击性能评估提供依据。根据材料的稳态循环应力应变关系和应变寿命曲线,分析车钩在经历一次压缩—冲击载荷循环后各部位的损伤情况,为寿命估计提供计算依据。According to the impact force time history of vehicle coupling process, contact instances between coupler bodies and knuckles of Chinese 300 km/h EMU（ electric multi units） vehicles was analyzed. In order to ensure computation stability and contact smoothness, multi-steps analysis technique in which contact pairs were buih sequentially was adopted. Stress and strain levels of weak areas were analyzed to evaluate anti-impact capability of coupler body. Based on the matefial data of steady-state cyclic strain-stress relationship and strain-life curve, stmetural damage of coupler body waa evaluated to estimate fatigue life.

关 键 词：柴田式密接车钩 有限元分析 损伤计算 

分 类 号：U260.341[机械工程—车辆工程] TH123.3[交通运输工程—载运工具运用工程]