爆炸冲击下悬挂系统性能验证及参数分析

基于地雷爆炸冲击环境下悬挂系统抗爆炸冲击性能的研究日益受到关注。针对某特种车辆在爆炸冲击环境下悬架系统的缓冲吸能性能进行研究,通过模态分析与模态试验对比验证有限元模型的准确性;建立整车爆炸环境,利用有限元仿真的方法对比分析防雷板加速度、车身底板加速度、假人小腿受力峰值,验证悬挂系统对车辆防护性能的作用。通过改变钢板弹簧刚度和弹簧阻尼系数进行悬挂系统参数分析。研究发现:无悬挂系统和有悬挂系统相对比,假人小腿受力峰值增加了57.3%;钢板弹簧片数为3时,假人小腿受力分别比2、4片时减少5.4%、6.4%。仿真结果表明了悬挂系统在地雷爆炸冲击环境下具有吸能缓冲的作用,且悬挂系统刚度影响整车的抗爆炸冲击能力。

Performance Test and Parameter Analysis of Suspension System under Explosion Shock

The research on anti-explosion impact performance of suspension system based on landmine explosion impact has attracted more and more attention.The cushioning and energy absorbing performance of a suspension sys-tem of a special vehicle under explosion impact environment is studied.The accuracy of the finite element model is verified by modal analysis and modal test.Using simulation analysis,the influence of the suspension system on the vehicle protection performance is verified by comparing the peak acceleration of the bottom lightning protection plate and the body panel and the Maximum value of force at the tibia of the dummy by the establishment of vehicle explo-sion environment.The suspension system parameters are analyzed by changing the stiffness of the leaf spring and the damping coefficient of the spring.The results show that the force of the dummy leg is increased by 57.3% compared with the suspension system.The force of the dummy tibia is reduced by 5.4% and 6.4% respectively compared with 2 and 4 slices when the leaf spring number is 3.The simulation results show that the suspension system has the func-tion of energy absorption and buffering under the impact of the mine explosion,and the stiffness of the suspension system affects the anti-explosion impact capacity of the whole vehicle.