摘要
为了研究正面碰撞下具有较低乘员惯性载荷的理想车体碰撞加速度波形,利用多刚体动力学模型与遗传算法相结合的方法,以乘员胸部3ms加速度最小化为目标函数开展优化设计,得到了碰撞初始时期峰值高、中期持续降低,后期再次升高的“三阶形”最优碰撞加速度波形,仿真结果表明,在其作用下,乘员胸部3ms加速度及主要部位的损伤风险均明显降低,最优车体碰撞加速度波能有效降低乘员在正面碰撞中的惯性载荷。
In order to study the ideal vehicle body collision acceleration waveform with low occupant inertial load in frontal collision,the multi-rigid dynamics model and the genetic algorithm are combined to optimize the design by minimizing the 3 ms acceleration of the occupant's chest.The"three-order shape"optimal collision acceleration waveform with high peak value in the initial period of collision,continuous decrease in the medium term,and rise again in the later stage is obtained.Simulation result shows,under this action,the 3 ms acceleration value of the occupant's chest and the risk of damage to the main part are significantly reduced.The optimal vehicle body collision acceleration wave can effectively reduce the inertial load of the occupant in frontal collision.
作者
任立海
张国庆
董立强
蒋成约
胡远志
Ren Lihai;Zhang Guoqing;Dong Liqiang;Jiang Chengyue;Hu Yuanzhi(Key Laboratory of Advanced Manufacture Technology for Automobile Parts,Ministry of Education,Chongqing University of Technology,Chongqing 400054;Chongqing Jinkang SERES New Energy Vehicle Design Institute Co.,Ltd.,Chongqing 401135)
出处
《汽车技术》
CSCD
北大核心
2019年第9期49-53,共5页
Automobile Technology
基金
国家自然科学基金项目(51405050)
重庆市教委科学技术研究项目(KJQN201801107)
关键词
车体碰撞
加速度波形
惯性载荷
遗传算法
Vehicle collision
Acceleration waveform
Inertial load
Genetic algorithm
