Structure analysis of locking mechanism of gear-rack typed ship-lift

  • Shi Duanwei
  • Wu Qingming
  • Zhang Zhiqiang
Article
Received:

Abstract

Contact nonlinear theory was researched. Contact problem was transformed into optimization problem containing Lagrange multiplier, and unsymmetrical stiffness matrix was transformed into symmetrical stiffness matrix. A finite element analysis (FEA) model defining more than 300 contact pairs for long nut-short screw locking mechanism of a large-scale vertical gear-rack typed ship-lift was built. Using augmented Lagrange method and symmetry algorithm of contact element stiffness, the FEA model was analyzed, and the contact stress of contact interfaces and the von Mises stress of key parts were obtained. The results show that the design of the locking mechanism meets the requirement of engineering, and this method is effective for solving large scale nonlinear contact pairs.

Key words

ship-lift locking mechanism FEA augmented Lagrange method ANSYS symmetry algorithm 

CLC number

U 642. 3 
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Copyright information

© Springer 2006

Authors and Affiliations

  • Shi Duanwei
    • 1
  • Wu Qingming
    • 1
  • Zhang Zhiqiang
    • 1
  1. 1.College of Power and Mechanical EngineeringWuhan UniversityWuhan HubeiChina

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