摘要
圆柱滚子轴承在载荷作用下的应力分析 ,是典型的边界非线性的接触问题。其特点和难点在于接触边界和接触力事先是未知的。文中提出一种新的求解带摩擦接触问题的数值算法 ,即拟高斯迭代法 ,并研制了一套求解接触问题的非连续有限元程序。应用该程序求解圆柱滚子轴承在受载情况下的应力 ,计算结果与光弹实验结果有良好的一致性 ,表明这种算法和程序是可靠的。有限元分析和光弹实验均表明 ,最大拉应力产生于外圈滚道面 ,而且外圈外表面应力变化幅度远小于滚道表面应力变化幅度 ,因而正常情况下不会发生外圈外表面损坏先于滚道表面的现象 。
To compute the stress of the cylindrical roller bearings under loading is a typical boundary nonlinear contact issue. The characteristics and also the difficulty of the contact problem is that the contact boundary and contact force are unknown. In the paper, a new numerical algorithm quasi Gauss iteration method is proposed to solve the contact problems with friction. A discontinuous finite element program for contact problems is exploited to solve the stress of the cylindrical roller bearings under loading. The experimental result agrees with the algorithm calculation, proving that the calculation method and the program used are reliable. The numerical results and the experimental results show that the maximal tension stress is at the raceway surface of the outer ring,and at the outside surface of the outer ring, the variation altitude of the stress is much less than that of the raceway surface. So, under normal condition, the outside surface of the outer ring will not be found with defect before the raceway surface of the outer ring, which is proved by the failures of the operating roller bearings.
出处
《中国铁道科学》
EI
CAS
CSCD
北大核心
2002年第2期86-94,共9页
China Railway Science
基金
铁道部科技发展计划项目 ( 2 0 0 1JL 0 2 )
