Dynamic Analysis And Optimization Of Gas Relief Type Locking Mechanism

The paper took a locking mechanism of gas release in rocket as the research objective, and used the dynamic finite element method and the theory of structural optimization to accomplish the dynamic analysis and the stiffness and strength analysis in rocket launching condition, and optimized the shape of locking hook.According to the requirements in rocket launching and the marching conditions, the paper gave locked-release condition and the impact of inertial load condition based the dynamic analysis. With the finite element software ABAQUS, the finite element model of the locking mechanism was established, which analyzed its dynamic response characteris-tics; Considering the different inertial loads and the reserved space between individual components in the marching condition, the paper analyzed the dynamic simulation, and obtained the dynamics response and the stiffness and strength situation of the key compo-nents in locking mechanism.Based on the dynamics analysis, dynamic optimize of locking mechanism was processed to study the influence of reserved space in locking mechanism for the optimal gap. With the mesh morphing module HyperMorph, the paper established the finite element shape optimization model of the locking hook in multi conditions, using structural optimiza-tion software OptiStruct for the comprehensive locking hook shape optimization.Through the study, the paper revealed the mechanical force and deformation and dynamic response of various components in typical condition, and optimized the shape and size of locking mechanism, providing an important reference for the design of rocket locking mechanism.