由于军用车辆侧面装甲薄弱，设计空间小，其侧爆防护性能面临越来越大的挑战。为了军用车辆侧面结构设计提供一种科学高效的研究方法，以某型军用车为研究对象，综合应用拉丁超立方试验设计、Kriging近似模型和序列优化与可靠性评估方法对其进行可靠性优化设计。通过分析侧爆冲击下整车与乘员响应，找出设计不合理之处，在侧面结构配置防爆梁和吸能构件、改进约束系统，提高原车侧爆防护性能。选取侧围和约束系统关键因素作为设计变量，以防爆梁总质量为设计目标和乘员损伤为约束条件，利用可靠性优化算法进行数值优化获得了最佳的设计参数，将优化后的模型再次仿真计算，验证了优化方案满足设计要求。为车辆侧爆防护和轻量化设计提供了设计思路。
Abstract
As side armor of military vehicles is weak and its design space is small, the side explosion protection performance of military vehicles faces bigger and bigger challenges.Here, a scientific and efficient study method for military vehicle side structure design was proposed.Taking a certain type of military vehicle as the study object, Latin hypercube test design, Kriging approximation model, and sequence optimization and reliability evaluation method were comprehensively applied to do reliability optimization design.Responses of the whole vehicle and passengers under impact of side blast were analyzed to find unreasonable places in design.The side structure was equipped with explosion-proof beam and energy-absorbing components, and restraint system was improved to improve the side blast protection performance of the original vehicle.Key factors of side wall and restraint system were chosen as design variables, the total mass of explosion-proof beam was taken as the design objective and occupant damage was taken as the constraint condition.The reliability optimization algorithm was used to do numerical optimization, and obtain the optimal design parameters.The optimized model was used to do simulation calculation again so as to verify the optimization scheme satisfying design requirements.It was shown that the study results can provide a design idea for vehicle side explosion protection and light-weight design.
关键词
侧爆防护 /
轻量化 /
拉丁超立方试验设计 /
Kriging近似模型 /
可靠性优化设计
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Key words
side explosion protection /
light-weight /
Latin hypercube test design /
Kriging approximation model /
reliability optimization design
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