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1. 南京理工大学 机械工程学院, 江苏 南京 210094
2. 特种车辆及其传动系统智能制造国家重点实验室, 内蒙古 包头 014032
Received:04 May 2022,
Published Online:06 September 2023,
Published:30 August 2023
移动端阅览
Tao LIU, Hongwei ZHANG, Xiaowang SUN, et al. Experimental and Simulation Study on Vehicle Manned Airdrop[J]. Acta Armamentarii, 2023, 44(8): 2283-2298.
Tao LIU, Hongwei ZHANG, Xiaowang SUN, et al. Experimental and Simulation Study on Vehicle Manned Airdrop[J]. Acta Armamentarii, 2023, 44(8): 2283-2298. DOI: 10.12382/bgxb.2022.0331.
随着现代战争模式的发展
载人空降技术受到越来越多的重视
空降载荷下乘员的安全防护是载人空降的核心问题之一。为此
开展车辆载人空降试验
测试车辆结构响应和乘员损伤响应;建立整车和乘员约束系统有限元模型
采用整车加速度边界施加到乘员约束系统上的仿真方法开展车辆载人空降仿真;结合试验和仿真结果
研究空降冲击下车辆结构的动态响应特性及乘员损伤规律。针对触地速度、悬架弹簧刚度、阻尼参数和坐垫参数4个结构参数
以乘员下胫骨力、盆骨加速度、动态响应指标为指标
进行单因素仿真分析和正交试验仿真分析
研究空降冲击下4个结构参数对乘员损伤的影响规律。研究结果表明:采用的仿真方法能够较好地反映空降冲击下的车辆结构响应和乘员损伤响应;空降冲击下
乘员易受损部位主要有下肢、盆骨和腰椎
其中下肢损伤主要由地板直接冲击造成
盆骨和腰椎损伤由通过车体-立柱-座椅传递到乘员上身的冲击造成;触地速度对乘员损伤的影响最为显著
悬架弹簧刚度、阻尼和坐垫硬度也在一定程度上影响了乘员损伤程度;该研究成果有利于理解空降冲击下车辆结构动态响应特性和乘员损伤机理
对载人空降车辆的设计具有一定的指导意义。
With the development of modern war mode
manned airdrop technology has attracted more and more attention. The safety protection of passengers under airdrop load is one of the core problems of manned airdrop. To this end
the vehicle manned airdrop test is carried out to test vehicle structural response and occupant injury response. The finite element models of the whole vehicle and the occupant restraint system are established
and the simulation method of the vehicle acceleration boundary applied to the occupant restraint system is used to conduct the vehicle manned airborne simulation. By combining the test and simulation results
the dynamic response characteristics of vehicle structure and the rule of occupant injury under airdrop impact are studied. To investigate the four structural parameters of touchdown speed
suspension spring stiffness
damping parameters and cushion parameters
taking the occupant’s lower tibial force
pelvic acceleration and dynamic response index (DRI) as indexes
the single factor simulation analysis and orthogonal experimental simulation analysis are carried out
and the influence laws of four structural parameters on occupant injury under airdrop impact are studied. The results show that the proposed simulation method can better reflect the vehicle’s structural response and occupant damage response under airdrop impact. Under airdrop impact
the vulnerable parts of occupants are mainly lower limbs
pelvis and lumbar spine. The lower limb damage is mainly caused by the direct impact of the floor
and the pelvis and lumbar spine damage is caused by the impact transmitted to the upper body of occupants through the body-column-seat. The effect of touchdown speed on occupant injury is the most significant. The stiffness
damping and cushion hardness of the suspension spring also affect the degree of occupant injury to some extent.
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FU X H , LU Y , WANG J , et al . Research on cumulative damage evaluation method for structural impact on airborne armored vehicle in landing process [J ] . IOP Conference Series: Materials Science and Engineering , 2020 , 730 : 012030 . DOI: 10.1088/1757-899X/730/1/012030 http://doi.org/10.1088/1757-899X/730/1/012030 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.
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