电焊机2018，Vol.48Issue(3)：150-152,166,4.DOI:10.7512/j.issn.1001-2303.2018.03.27
基于断裂力学的构架焊接缺陷容限尺寸研究
Study on defect tolerance size of welded joint for high speed train bogie frame based on fracture mechanics
李忠文1
作者信息
- 1. 中车青岛四方机车车辆股份有限公司,山东青岛266111
- 折叠
摘要
Abstract
Correlation of stress intensity factor and defect size for welded joints of high-speed train bogie frame was analyzed and calculated by means of fracture mechanics principle for surface linear defect and root continuity defect.More specific results were thus provided on allowable defect size under different stress range based on material properties of welded joint.Results show that stress intensity factor of crack tip increased with flaw depth and stress range,but decreased with the ration of depth and semi-length.Furthermore,flaw tolerance depth was significantly reduced with the increase of stress level.关键词
焊接/转向架构架/断裂力学/缺陷/损伤容限Key words
weld/bogie frame/fracture mechanics/defect/damage tolerance分类
交通工程引用本文复制引用
李忠文..基于断裂力学的构架焊接缺陷容限尺寸研究[J].电焊机,2018,48(3):150-152,166,4.
