Rocket Airdrop Landing Impact Of A Vehicle Simulation And Lightweight Design

Based on the current situation and development trend of China’s heavy airdropping equipment, the new Airdropping Mounted Rocket Launcher (AMRL) is regarded as the research target in this paper.The landing impact of AMRL and the lightweight design of swinging pedestal are been researched.Based on the finite model of the AMRL and landing ground, the landing impact of AMRL under the conditions of horizontal landing, roll landing, retroversion landing is been analyzed. The measures to improved the safety of AMRL are put forward. The analysis results show that the AMRL can land safety under the three conditions, but the safety factor under the condition of retroversion landing is lowest.The topology optimization method is used to achieve the optimal structure of swinging pedestal. According to the manufactured principle and the results of the simulation of the optimized swinging pedestal, the project of the optimal design is been confirmed. Through the topology optimization design, the strength of the swinging pedestal was enhanced and the mass of the swinging pedestal is decreased by10.5%. The goal of topology optimization is achieved.In order to reduce the mass of the swinging pedestal, the size optimization of swinging pedestal is finished by using Isight based on multi-objective genetic algorithm. By this optimization, the mass of swinging pedestal is decreased by12.9%and the stiffness and strength can meet the requirement.The results show that the mass of the swinging pedestal is reduced by22%after lightweight design, and the AMRL can land safely under the conditions of horizontal landing, roll landing, retroversion landing. The research results have the important significant for guiding the field experiments of AMRL effectively and the lightweight design of other parts.