Virtual Prototype Modeling and Simulation of Gun Automat

In order to understand dynamics response of automatic mechanism during gun fire,modeling and simulation for virtual prototype of gun automatic mechanism were investigated and studied.Based on the analysis of automat configuration and mechanism movement,virtual prototype model was set up by means of ADAMS software package.Based on finite element method(FEM),the point-curve constraint and solid-solid contact were used to simulate the contact and impact among main components of automat.The finite element model of automat main components such as hammer catch was built up,the meshes were generated by manual operation so as to guarantee their quality,the boundary conditions were app-lied,and contact stiffness was approximately calculated by use of FEM.Script simulation method was applied to multi-body system dynamics analysis for automat working process.Finally,satisfied simulation results were obtained.