摘要
以新型风机增速箱输出轴为研究对象,对输出轴进行设计、校验,然后对实心结构空心优化,模拟实际工况,进行有限元分析,结果表明空心轴满足强度要求,验证了空心优化的合理性。在此基础上考虑低幅载荷强化与软化的双重作用,提出了一种修正的寿命预估模型,利用新模型对输出轴进行寿命预估,与设计寿命相差5.22%左右,具有较高的预估精度,而且计算简单,能够弥补现有模型忽略低幅载荷循环特性的缺陷。该研究方法对轴类零件的优化设计及寿命预估具有一定的指导意义。
The output shaft of the new wind turbine gearbox is taken as the research object, which is designed and verified, with the hollow optimization of its solid structure made to carry out finite element analysis under actual working conditions. The results show that the hollow shaft meets the requirement of strength, which verifies the rationality of the hollow design. Considering the dual effect of low amplitude load strengthening and softening, a modified life prediction model is proposed. The model is used to predict the life of the output shaft with a difference of about 5.22% from the actual life. It has a high prediction accuracy and simple calculation, which can make up for the defects of the current model neglecting the characteristics of low amplitude load cycle. This research method is of certain guiding significance for the optimization design and life prediction of shaft parts.
作者
韦尧兵
彭敬
刘俭辉
高刚刚
WEI Yaobing;PENG Jing;LIU Jianhui;GAO Ganggang(School of Mechanical and Electrical Engineering, Lanzhou University of Technology, Lanzhou 730050, China;College of Technical Engineering of Lanzhou University of Technology, Lanzhou 730050,China)
出处
《西安理工大学学报》
CAS
北大核心
2019年第3期327-332,共6页
Journal of Xi'an University of Technology
基金
国家自然科学基金资助项目(51605212)
甘肃省自然科学基金资助项目(17JR5RA122)
关键词
增速箱输出轴
空心优化
有限元
循环特性
寿命预估
gearbox output shaft
hollow optimization
finite element
cyclic characteristics
life prediction
