Simulation Of Airborne Vehicle Landing And Optimal Design Of Airbags

Airborne armored infantry fighting vehicle(AAIFV)is an important combat equipment of our country’s paratroopers.The study of arranging AAIFV smoothly dropped to the designated location has been the top priority of the research work of the airborne forces.Due to the wide variety of airdrop equipment,different combat missions will lead to changes in equipment as well as parameters of airdrop system,which result in the requirement of airbag optimization for specific airdrop equipment to acquire maximum cushioning without rebounding.The current research hotspot is how to design optimized airbag system for different airdrop equipment quickly based on the existing airbag structure.The main contents of this paper include the following aspects:1)A brief description of the structure of the airbag is provided.The commonly used airbag numerical simulation algorithm is introduced,and the most suitable control volume method for this simulation is selected to simulate the airbag.The finite element simulation software was used to establish the calculation model of the landing buffer process of the AAIFV-airbag system.The landing buffer process of the AAIFV was simulated and it was compared with the experimental data.The results are good and can be proven to reflect the real situation2)The second-generation AAIFV-airbag system landing buffer finite element model was established by parametric modeling method.Combine the parametric modeling and experimental design methods to obtain a large amount of calculation data.The support-vector-regression algorithm was used to fit the calculated data,and the surrogate model of the landing acceleration peak and airbag structure parameters of the paratrooper chariot were obtained.3)The genetic algorithm was used to optimize the surrogate model of the landing cushioning process.The optimized airbag structure parameters were obtained and the airbag cushioning system for the second-generation AAIFV was successfully obtained.Parametric modeling of the airbag cushioning system,experimental design,surrogate model and genetic algorithm can be used to design the airbag structure Based on the existing airbag cushioning system,and achieve excellent cushioning performance successfully for different airdrop equipment.