摘要
为解决单双耳接头疲劳损伤导致装备整体性能严重下滑的问题,本文基于断裂力学理论建立了复合型裂纹扩展计算模型,通过试验方法和有限元方法,从剩余疲劳寿命和断口形态的角度分析了不同类型初始裂纹在循环载荷下的疲劳性能。研究表明:剩余疲劳寿命与裂纹出现的位置、类型、大小紧密相关,可为装备安全使用提供理论依据。
To address the significant decline in overall performance caused by fatigue damage in single lug and yoke joints,a composite crack propagation calculation model was developed based on fracture mechanics theory.Using experimental and finite element methods,the fatigue performance of various types of initial cracks under cyclic loading was analyzed,focusing on remaining fatigue life and fracture morphology.The results indicate that residual fatigue life is closely related to the crack location,type,and size.This research offers a theoretical foundation for the safe utilization of equipment.
作者
马帅
程建生
段金辉
王儒
杜小龙
陈鹏辉
MA Shuai;CHENG Jiansheng;DUAN Jinhui;WANG Ru;DU Xiaolong;CHEN Penghui(College of Field Engineering,Army Engineering University of PLA,Nanjing 210007,China;Suzhou Military Sub-district,Jian-gsu Provincial Military Region,Suzhou 215005,China)
出处
《哈尔滨工程大学学报》
北大核心
2025年第5期967-976,共10页
Journal of Harbin Engineering University
基金
国家自然科学基金项目(52371300).
