爆炸冲击下乘员下肢保护装置仿生设计与优化  

Bionic design and optimization of the occupant lowerlimb protection device under explosion shock

作　　者：覃凌云 杨书仪[1] 戴巨川[1] 汪国胜 李桂兵[1] 凌启辉 陈哲吾[1] QIN Lingyun;YANG Shuyi;DAI Juchuan;WANG Guosheng;LI Guibing;LING Qihui;CHEN Zhenwu(School of Mechanical Engineering,Hunan University of Science and Technology,Xiangtan 411201,China;China North Vehicle Research Institute,Beijing 100072,China)

机构地区：[1]湖南科技大学机电工程学院,湖南湘潭411201 [2]中国北方车辆研究所,北京100072

出　　处：《兵器装备工程学报》2023年第3期95-103,共9页Journal of Ordnance Equipment Engineering

基　　金：中央军委基础加强计划技术领域基金项目(2021-JCJQ-JJ-1309);湖南省科技创新计划(2021RC4038)。

摘　　要：车辆底部地雷和简易爆炸物的爆炸冲击将会直接危害乘员下肢安全。为此,以贝壳外形截面为原型,通过结构仿生原理设计了一种乘员下肢仿生保护装置。基于乘员约束系统局部等效模型,分析了传统双圆管、圆形肋骨、仿贝壳薄壁管、仿虾螯薄壁管、仿竹薄壁管及仿马尾茎薄壁管等6种保护装置的防护性能,并对下肢仿生保护装置的各结构参数进行了单因素分析,确定初步设计方案。以假人左右下胫骨轴向力为优化目标、保护装置总变形量为约束条件,采用NSGA-Ⅱ遗传算法对仿生保护装置开展多目标优化,获取其防护性能最优的参数组合。研究表明:与未加装保护装置前相比,加装优化后的仿生保护装置,假人左右下胫骨轴向力峰值分别降低了66.76%和66.22%,满足AEP-55限值5.4 kN的要求,对乘员下肢提供了有效保护。Explosion shock of mines or improvised explosive devices below a vehicle will directly endanger the safety of occupants’lower limbs.Therefore,with a shell shape section as the prototype,this paper designs a bionic protection device for lower limbs through the principle of structural bionics.Based on the local equivalent model of the occupant restraint system,protective performance of six kinds of protective devices are analyzed,such as traditional double circular tubes,circular ribs,bionic shell thin-walled tubes,bionic shrimp claw thin-walled tubes,bionic bamboo thin-walled tubes and bionic horsetail thin-walled tubes.Single factor analysis is carried out on the structural parameters of the lower limb bionic protection device,and the preliminary design scheme is determined.Taking the axial force of the left and right lower tibias of the dummies as the optimization target and the total deformation of the protective device as the constraint condition,this paper uses the NSGA-Ⅱgenetic algorithm to carry out multi-objective optimization of the bionic protective device to obtain the optimal parameter combination of its protection performance.The results show that,after the bionic protection device is installed,the peak axial force of the left and right lower tibias reduces by 66.76%and 66.22%respectively,which meets the requirement of AEP-55 limit of 5.4 kN and can provide effective protection for occupant lower limbs.

关 键 词：爆炸冲击 乘员约束系统 薄壁管 下肢仿生保护装置 多目标优化 

分 类 号：TJ810.02[兵器科学与技术—武器系统与运用工程]