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宽内圈关节轴承径向极限承载破裂失效原因
投稿时间:2017-03-17  修订日期:2017-05-02  点此下载全文
引用本文:林志埙.宽内圈关节轴承径向极限承载破裂失效原因[J].计算机辅助工程,2017,26(6):71-75.
作者单位E-mail
林志埙 福建龙溪轴承(集团)股份有限公司 15892012278@163.com 
基金项目:国家科技支撑计划(2014BAF08B03)
中文摘要:对端部有台阶(宽内圈)和无台阶(窄内圈)关节轴承施加相同的径向极限载荷时,宽内圈端部台阶发生破裂失效现象,而窄内圈却完好无损。为分析台阶破裂原因,采用有限元方法对2种内圈结构进行径向极限承载分析,从位移、等效应力和主应力等3个方面分别描述两者之间的区别。结果表明:宽内圈端部台阶的局部应力集中部位最大等效应力值较小,但是该部位的变形量较大;第一主应力呈拉应力状态且其数值已超过材料的屈服强度,是造成宽内圈开裂的主要原因。
中文关键词:宽内圈  径向静载  破裂失效  等效应力  主应力  变形  轴承
 
Crack failure reasons in extended inner ring of spherical plain bearings under radial limit loading
Abstract:When the same radial limit loading is applied to the extended inner ring of spherical plain bearings with step at the end and the narrow one without step, crack failure occurs on the extended inner ring with step at the end, while the narrow one remains intact. In order to analyze the reasons for the crack of step, the finite element method analysis is carried out on the condition that the two kinds of inner ring structure are performed under the radial limit loading, and the differences between them are described in three aspects including displacement, equivalent stress, and principal stress. The results indicate that there is a smaller maximum equivalent stress at the local stress concentration place of the extended inner ring with step at the end, but there is a larger deformation at the same place. The major principal stress acts as tensile stress and its value exceeds the yield strength of the material, which is the main reason for the crack on the extended ring.
keywords:extended inner ring  radial static load  crack failure  equivalent stress  principal stress  deformation  bearing
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