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通过对厚板焊接压杆疲劳对比试验结果进行分析 ,发现厚板焊接压杆在经过一段低应力疲劳之后 ,焊接残余应力峰值明显降低 ,并且残余应力沿板厚方向分布趋于均匀化。
Through the comparison of fatigue test results of heavy plate welding bar, it is found that after a period of low stress fatigue, the peak value of welding residual stress decreases obviously and the distribution of residual stress tends to be uniform along the thickness direction.