空气球罐焊缝咬边疲劳裂纹始裂寿命研究

Study on initiation life of weld undercuts in air spherical tank

对某企业空气球罐焊缝咬边在疲劳载荷下的受力情况,进行了裂纹启裂寿命的理论分析和模拟试验研究,验证了文献[1]理论估算方法的准确性,为咬边疲劳裂纹启裂寿命研究提供了理论依据和试验数据。

Aiming at the stress condition of the undercuts of the air sphericaltank under fatigue loading in an enterprise,it was studied theoretical analysis ad simulated experiment research on initiation life of fatigue crack,the accuracy of the method of theoretical assessment was also validated, the theoretical basis and experimental data was provided for research on the initiation life of undercuts in weld root.