Structure Analysis of Locking Mechanism of Gear-Rack Typed Ship-Lift

作     者：SHI Duanwei WU Qingming ZHANG Zhiqiang 

作者机构：College of Power and Mechanical Engineering Wuhan University Wuhan 430072 Hubei China 

出 版 物：《Wuhan University Journal of Natural Sciences》 (武汉大学学报（自然科学英文版）)

年 卷 期：2006年第11卷第3期

页      面：631-636页

核心收录：

学科分类：08[工学] 0824[工学-船舶与海洋工程] 

基　　金：Supported by the Key Research Project of StatePower Corporation (SPKJ 0l6-06) the Key Scientific ResearchProject of Hubei Province ( 2004AC101D31) 

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

摘      要：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 stole nonlinear contact pairs.