自行车上台阶的碰撞模型分析
THE COLLISION MODEL OF THE BICYCLE ROLLING UP A STEP
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摘要: 自行车前车轮与台阶发生斜碰撞以后可能落上台阶,也可能弹回地面,后者容易引发侧翻或倾倒的事故。本文将建立一个基于恢复系数的通用薄车轮台阶碰撞模型,并通过一个实际案例代入具体参数数值,得出此案例下车轮速度大小与速度方向的安全可行域,并讨论台阶高度对可行域的影响。Abstract: In colliding with a step, the front wheel of the bicycle may roll up the step or spring back to the ground. In the latter case, a rollover or a dumping accident may happen. In this study, a general collision model based on the coefficient of the restitution (COR) is built.The safe ranges of the wheel speed and the velocity direction are obtained. Besides, the influence of the step height is also discussed.