【摘要】 应用能量释放率法及Paris公式对疲劳裂纹扩展问题进行了研究,详细分析比较了在不同应力比r作用下,对箱形构件未穿透型裂纹剖面各积分点的应力强度因子及裂纹扩展速率的影响.所得结论可为工程设计及裂纹无损检测人员提供一定参考.更多还原

【Abstract】 By employing such methods as energy release rate and Paris’ law,the impacts from fatigue crack propagation are first analyzed.In comparison with diverse stress ratios,the stress intensity factor and crack propagation rate regarding box components are then detected based on the integral nodes on local crack sections.Finally,this approach can be set as a reference for engineering designers and crack inspectors.更多还原