AH32钢T型焊接接头疲劳强度的试验与数值模拟

摘要

对AH32钢T型试件进行疲劳试验,并利用有限元软件对T型焊接接头的应力分布及疲劳寿命进行数值模拟,最终将疲劳试验结果与数值模拟结果对比分析.研究发现,T型焊接接头在焊趾附近处应力值最大,寿命最短.本文研究结果为今后船海结构物的疲劳寿命预测提供了有益参考.%The fatigue tests of the T-shape welded specimen for AH32 steel were performed in this paper,the stress distribution and the fatigue life of T welded joint were numerically simulated by finite element software,the fatigue test results and numerical simulation results were compared and analysed finally.The study found that the maximum stress and the minimum life of T welded joint would be appeared on the location of weld toes.This paper provided a beneficial reference for fatigue life predictions of maritime structures.