Iterative method to solve bearing's force and stiffness for a multi-support spindle system based on finite element analysis

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Abstract

An iterative method based on finite element analysis (FEA) was presented to compute each bearing's force and stiffness and analyze the effect of preload on bearing's stiffness for a multi-support spindle system. The interaction relation of bearing's force and stiffness after the loading of the main spindle is considered in the present method. The force-deformation-stiffness correlation is adopted to search for the bearing's balance state in the FEA model of the spindle system and single bearing. The comparison with typical numerical results shows that this method can calculate correctly the force and stiffness of each bearing and solve the hyperstatic problem and force distribution of the support-bearing for a multi-support spindle system. In addition, the feasibility of this method was confirmed by our experiments on bearing deformation under external load.

Original languageEnglish
Pages (from-to)41-45
Number of pages5
JournalHsi-An Chiao Tung Ta Hsueh/Journal of Xi'an Jiaotong University
Volume44
Issue number11
StatePublished - Nov 2010

Keywords

  • Bearing's force
  • Bearing's stiffness
  • Finite element iterative method
  • Multi-support spindle systems
  • Preload

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