基于离散元法的陶瓷轴承内部缺陷破坏机理  

Damage Mechanism of Internal Defects in Ceramic Bearings Based on Discrete Element Method

作　　者：朱振伟 谷晓娇 Zhu Zhenwei;Gu Xiaojiao

机构地区：[1]沈阳理工大学,辽宁沈阳110159

出　　处：《一重技术》2024年第4期11-15,共5页CFHI Technology

摘　　要：采用离散元法研究含有预制缺陷氮化硅陶瓷轴承的损坏形式,分析不同倾角的裂隙对裂纹演化的影响,结合裂纹周围应力场和位移场研究微缺陷陶瓷轴承内部裂纹的演化特征及抗压强度,得出安全临界值,为研究陶瓷轴承的力学性能及使用寿命提供指导。This paper studies the damage form of the silicon oxide ceramic bearings with prefabrication defects by discrete element method,analyzes the influence of different inclination angles on crack development,explores the development characteristics of internal cracks and compressive strength of micro-defect ceramic bearings on the basis of the stress field and displacement field around the cracks to obtain the critical safety value,so as to provide guidance for the study of the mechanical properties and service lives of ceramic bearings.

关 键 词：氮化硅陶瓷轴承 离散元 裂隙倾角 破坏机理 

分 类 号：TH133.3[机械工程—机械制造及自动化]