Research on wear prediction of breechblock hanging arm based on finite element method

The wear of breechblock Hanging arm is the main failure form that leads to the early closing fault of the Breechblock Opening-closing Mechanism. In order to study the wear evolution process and accurately predict the wear amount, this paper adopts the finite element simulation technology combined the improved Archard wear model to comprehensively and accurately reproduce the whole wear process of the breechblock Hanging arm. Firstly, the classical Archard wear model is modified, and the wear volume is converted into the wear depth change of the nodes of the finite element model by discretization method. Secondly, the contact region of the finite element model was set as ALE adaptive mesh region, and the secondary development was carried out through the Umeshmotion subroutine, and the wear of each node was used as the offset of the ALE mesh node, and the update and offset of the mesh node were dynamically realized. Finally, the wear analysis module is applied to the wear calculation of the breechblock Hanging arm of a certain type of naval gun, and the simulation results are compared with the actual wear situation. The results show that the wear amount of the breechblock Hanging arm simulated by this method is basically consistent with the real wear amount, which verifies the accuracy and reliability of the method, and provides an important basis for the structural optimization design of the breechblock Hanging arm.