偏斜工况下向心关节轴承应力场分析

Analysis on Stress Filed of Radial Spherical Plain Bearings under Tilting Condition

利用非线性接触有限元方法对向心关节轴承进行应力场分析,在有限元模型中将心轴和轴承座作为柔性体处理,分别考察内、外圈相对偏斜工况下的应力场分布。结果表明:在极限静载荷工况下,内、外圈相对偏斜对关节轴承的应力场分布产生明显影响;由于偏斜工况下应力分布不对称,在内、外圈的端面接触处产生应力集中现象,其应力值明显高于无偏斜工况下的最大应力值,且在偏斜角达到1.5°时,出现峰值应力。

In the finite element model,the shaft and bearing house are set as flexible body,the stress field is investigate in the tilting case of inner ring and outer ring.The results indicate that the tilting of inner and outer ring has obviously influence on the stress distribution under limiting static load conditions.The unsymmetry of loading distribution results in the stress concentration at the end of contact surface and higher stress under tilting condition,and the peak stress appears when tilting angle is at 1.5°.