摘要
随着列车速度不断提高,辐板的热-机疲劳成为车轮破坏的主要形式之一。基于有限元软件,分析马钢自主设计速度200 km/h车轮制动残余应力对车轮辐板多轴疲劳的影响。结果发现:2次紧急制动后,车轮辐板的最大等效应力位于辐板孔,主要是由径向拉应力和周向压应力组成;制动残余应力主要影响辐板孔疲劳性能;有限元分析和疲劳试验结果证明车轮辐板的抗疲劳性能满足要求,且二者疲劳薄弱部位一致。
With continuous raising of train speed,the thermomechanical fatigue is the main failure form ofwheelplate.The effects of brake residual stress on multi-axle fatigue of Masteel designed at 200km/hwere analyzed.The results show that after two times of emergency braking,the maximum equivalent stress of the wheel web is located in the web hole,which is mainly composed of radial tensile stress and circumferential compressive stress.Braking residual stress mainly affects the fatigue performance of web hole.The results of finite element and fatigue test show that the anti fatigue performance of wheel web meets the requirements,and the fatigue weak parts of them are consistent.
作者
陈刚
黄孝卿
丛韬
王亚成
CHEN Gang;HUANG XiaoQing;CONG Tao;WANG Yacheng(Baowu Group Masteel Rail Transit Materials Technology Company Limited,Maanshan Anhui 243010,China;Metals and Chemistry Research Institute,China Academy of Railway Sciences Corporation Limited,Beijing 100081,China;Tongling Vehicle Supervision Project Department,China Railway Shanghai Group Co.,Ltd.,Tongling Anhui 244000,China)
出处
《高速铁路新材料》
2022年第1期59-63,共5页
Advanced Materials of High Speed Railway
基金
安徽省重大科技专项(201903a05020052)
中国铁道科学研究院集团有限公司科研开发基金项目(2020YJ120)。
