摘要
以多起装卸类桥式起重机承轨梁水平裂纹开裂的事例为背景 ,分析了板边半圆分布载荷作用下的板内应力场分布 ,讨论了裂纹在焊接影响区萌生的主要原因 。
The paper is based on several cases of horizontal crack propagation in bearing-trail beam web of loading and unloading overhead travelling cranes.It analyses intra-plate stress field under semicircle distributed load.At the same time the key reason of crack formation in welding heat affected zone is discussed.In view of the above,the polygenic horizontal crack and the model of damaging and polymerism spread are presented for the first time.
出处
《同济大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2001年第12期1407-1411,共5页
Journal of Tongji University:Natural Science
