汽车—护栏碰撞的仿真模型

Study on Modelling Related to Collision Between Vehicle and Barrier

运用计算机仿真技术，对汽车同护栏等路边设施的碰撞过程进行了仿真分析，用欧拉法和拉格朗日法建立了汽车三维运动分析模型，确定了汽车－护栏的弹性碰撞模型并描述了逻辑判断，提出了汽车与护栏碰撞后汽车的接触面积、碰撞力和碰撞力矩的算法，给出的应用实例的仿真结果表明，研制的仿真软件可用于路边设计和预测汽车的性能。

The digital simulation with a personal computer-based software is applied forthe simulation and analysis of the impact procedure between a vehicle and a spring barrier. The Euler and Lagrangian principles are used to establish the mathematical modelof the vehicle with three-dimensional motion. The model of collision between vehicleand roadside spring barrier is developed. The logical judgment of impact procedure arediscussed. The algorithm for the contact area, impact force and impact torque, as wellas the applied point of the force on the vehicle is presented. Finally, the application examples are given.