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滚动轴承滚道故障演化的动力学建模与响应分析

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对滚动轴承滚道故障演化过程的振动特性及应力特性进行分析,在充分考虑径向载荷、转速、摩擦等影响因素的前提下,通过ANSYS/LS-DYNA建立滚动轴承的二维全柔性显式有限元模型,进行外、内滚道故障演化情况的仿真分析.分析结果表明:计算得出的故障特征频率与理论解误差小于1%;随滚道故障演化,轴承的振动响应及应力水平均升高;在相同故障尺寸下,内滚道故障对振动响应及应力的影响更大.
Dynamic Modeling and Response Analysis of Rolling Bearing Raceway Fault Evolution
To analyze the vibration and stress characteristics of the rolling bearing raceway fault evolution process,a two-dimensional fully flexible explicit finite element model of the rolling bearing is established by ANSYS/LS-DYNA with full consideration of radial load,rotational speed,friction and other influencing factors,and the simulation analysis of the outer and inner raceway fault evolution is carried out.The analysis results show that the error between the calculated fault characteristic frequency and the theoretical solution is less than 1%,the vibration response and stress level of the bearing increase with the evolution of the raceway fault,and under the same fault size,the influence of the inner raceway fault on the vibration response and stress is greater.

rolling bearinglocalized defectdynamic modelingLS-DYNAresponse analysis

任悦、臧朝平

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南京航空航天大学能源与动力学院,江苏南京 210016

滚动轴承 局部故障 动力学建模 LS-DYNA 响应分析

2024

机械制造与自动化
南京机械工程学会 南京机电产业(集团)有限公司

机械制造与自动化

CSTPCD
影响因子:0.29
ISSN:1671-5276
年,卷(期):2024.53(6)