| 姜潮,邓善良.考虑车辆高速和低速耐撞性的多目标优化设计[J].计算力学学报,2014,31(4):474~479 |
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| 考虑车辆高速和低速耐撞性的多目标优化设计 |
| Multi-objective optimization and design considering automotive high-speed and low-speed crashworthiness |
| 投稿时间：2013-05-20 修订日期：2013-08-24 |
| DOI：10.7511/jslx201404010 |
| 中文关键词: 高速耐撞性 低速耐撞性 轻量化 多目标优化 |
| 英文关键词:high-speed crashworthiness low-speed crashworthiness light weight multi-objective optimization |
| 基金项目:国家自然科学优秀青年基金（51222502）;国家自然科学基金（11172096）;教育部新世纪优秀人才支持计划（NCET-11-0124）;湖南省杰出青年基金（14JJ1016）资助项目. |
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| 中文摘要: |
| 正面高速耐撞性设计，需确保车内乘员的人身安全，使车内乘员的人身伤害降到最低；正面低速耐撞性设计，要求尽量减少车辆在碰撞中的损伤，使车辆具有良好的碰撞损伤修复经济性。本文根据上述特点，将车辆的正面高速耐撞性与正面低速耐撞性相结合，并且考虑车身部件的轻量化，提出了一种优化设计方法。该方法将保险杠、吸能盒内外板以及前纵梁内外板五个部件厚度作为优化设计变量，在正面低速碰撞中，以前纵梁吸收的碰撞总能量作为其是否发生较大变形的依据，利用代理模型和遗传算法进行了优化计算。最后，将该方法应用在某一车型的耐撞性设计中。 |
| 英文摘要: |
| The main purpose of the design in frontal high-speed crashworthiness is to ensure the safety of occupants and minimize the passengers body damage.Meanwhile, in the frontal low-speed crashworthiness design, it requests to reduce automotive collision damage and possess good economic performance in the collision damage repair.According to the characteristics above, the vehicle frontal crashworthiness of high-speed and low-speed positive crashworthiness combined, and considering the lightweight of automobile body parts, an optimization design method is proposed.That is, thicknesses of frontal bumper, crash-box inner and outer plates, frontal longitudinal beam internal and external plates are selected as five design variables, and the energy of frontal longitudinal beam absorbed in the low-speed collision is taken as the basis of whether the large deformation, the agent model and genetic algorithm are used to calculate.Finally the method had been applied to a vehicle crashworthiness design. |
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