Research on Cumulative Damage Evaluation Method for Structural Impact on Airborne Armored Vehicle in Landing Process

Since it was very costly and complicated to analyze cumulative damage caused by structural impact on airborne armored vehicle in landing process using real equipment airdrop test, finite element method(FEM) was taken to build a finite element(FE) model of airborne armored vehicle and airbag system to simulate the landing impact process of airborne armored vehicle. In combination with Lemaitre Damage Model and the damage evolution law of materials, the cumulative damage caused by structural impact of vehicle was calculated. The cumulative damage of structure of airborne armored vehicle in multiple landing processes was assessed, results of which were expected to provide theoretical guidance for the operational use and maintenance of airborne armored vehicle.