某车正面碰撞乘员侧约束系统仿真及优化

发布时间：2018-02-02 14:10

本文关键词： 正面碰撞副驾驶位置乘员侧约束系统 MADYMO C-NCAP　出处：《辽宁工业大学》2014年硕士论文　论文类型：学位论文

【摘要】：随着中国经济的迅速发展，汽车的保有量在不断增加，加之新车型的车速也在逐渐的提高，道路交通安全问题仍然非常严峻。在中国，因为车辆都是左开右行，副驾驶位置在右边，如果车辆相撞，驾驶员大多数都会下意识地将方向盘右打来让自己避开危险，这样造成的最后结果就是把副驾驶座的位置向右撞，副驾驶座位的乘员被暴露在最危险的环境中，因而，研究正面碰撞乘员侧约束系统特性对避免汽车在发生碰撞过程中的安全隐患，，提高乘员在汽车发生碰撞过程中的安全指数是十分有效的。本论文将研究某车乘员侧约束系统的仿真及参数优化，通过对汽车在正面碰撞中被动安全性的研究意义和研究方法的了解，建立该车型的部分仿真模型（包括乘员约束系统），并根据ECE R94、FMVSS214、新车评价程序（NCAP）等与汽车正面碰撞相关的法规和汽车碰撞仿真的基本理论，再结合MADYMO仿真软件，对建立的包括汽车约束系统的模型进行仿真分析。首先，由试验中的实车数据模型建立一个有效的乘员侧约束系统模型，模型包括车身、假人、安全带及安全气囊系统等，并根据实际情况建立他们之间的接触，在本文中还将有限元理论与多刚体动力学有机结合起来，在MADYMO软件中得到充分的体现。其次，针对某实车正面碰撞试验中得出的实验数据与C-NCAP评价指标对比，结合MADYMO软件建立结构模型，根据碰撞后的结果与实车数据进行对比，验证了模型的有效性。最后，分析仿真结果中的不足，确定优化方向并制定几种改进方案，对模型进行修改与完善，通过仿真结果对比以上几种优化方案，并根据C-NCAP评价标准确定最优方案，从而提高乘员约束系统的性能，实现对车辆内乘员侧安全性能研究的最终目的。
[Abstract]:With the rapid development of China's economy, the number of cars is increasing, and the speed of new models is also gradually increasing, road traffic safety problems are still very serious. In China, because the vehicles are left and right. The copilot is on the right, and if a car collides, most drivers subconsciously push the steering wheel to the right to avoid danger, resulting in the final result of hitting the copilot position to the right. The occupants of the copilot seat are exposed to the most dangerous environment, so the study of the characteristics of the passenger side restraint system in frontal impact can avoid the hidden danger of the vehicle during the collision. It is very effective to improve the safety index of the occupants in the process of vehicle collision. This paper will study the simulation and parameter optimization of the passenger side restraint system of a vehicle, through the research significance and research method of the passive safety of the vehicle in the frontal impact. Part of the simulation model of the vehicle is established (including the passenger constraint system), and based on the ECE R94N FMVSS214. The new car evaluation program (NCAP) and other laws and regulations related to vehicle frontal impact and the basic theory of vehicle collision simulation are combined with MADYMO simulation software. The model including automobile constraint system is simulated and analyzed. First of all, an effective passenger side restraint system model is established from the real vehicle data model. The model includes body, dummy, seat belt and airbag system. According to the actual situation, the contact between them is established. In this paper, the finite element theory and multi-rigid body dynamics are combined organically, which is fully reflected in MADYMO software. Secondly. In view of the comparison between the experimental data and C-NCAP evaluation index obtained from the frontal impact test of a real vehicle, the structural model is established with the MADYMO software, and the results are compared with the real vehicle data according to the results after the collision. Finally, the shortcomings of the simulation results are analyzed, the optimization direction is determined and several improvement schemes are worked out, the model is modified and improved, and the above optimization schemes are compared with the simulation results. According to C-NCAP evaluation criteria, the optimal scheme is determined, so as to improve the performance of the passenger restraint system and achieve the ultimate purpose of the study on the safety performance of the occupant side of the vehicle.
【学位授予单位】：辽宁工业大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：U467.14;U491.61

【参考文献】