The welded joints were susceptible to defects and stress concentration,rendering them vulnerable areas for fatigue crack initiation and propagation under fatigue loads.In comparison to homogeneous materials,the microstructure and stress localization in each of regions for the joints fur-ther complicated the fatigue issue in welded structures.Unlike ideal experimental conditions,the actu-al service environments of welded structures were intricate,it was necessity to consider the coupling characteristics between environmental factors and welded structures when predicting welded structure fatigue life.Therefore,the internal factors influencing welded structures were summarized and ana-lyzed while reviewing existing life prediction models from perspectives encompassing complex loads and extreme service environment.Combining the latest research progresses,the recommendations were proposed to enhance fatigue life assessment methods for the welded structures.
关键词
焊接结构/影响因素/复杂载荷/极端环境/寿命预测模型
Key words
welded structure/influencing factor/complex load/extreme environment/life pre-diction model
维普
万方数据