与汽车相关的几个力学问题的研究
论文编号:WLX073 字数:10185,页数:26摘 要 本文研究了与汽车运动有密切联系的几个力学问题，包括刹车时的最大加速度问题，行驶速度与刹车距离关系的问题，悬挂系统所起的减震作用，刚体转动对轴的附加压力问题，这几个问题与汽车行驶中的舒适性，安全性密切相关。在汽车制造和发展的过程中，舒适性和安全性一直是所努力追求的目标。作为直接承载这两个要求的具体实现形式，在新技术的支撑下不断发展，呈现出多种学科交叉，多种技术综合，多种理论覆盖的趋势，但在其中，作为基础的力学原理的作用是不可代替的，力学模型的分析是必不可少的。本文正是从这种追根溯源的要求出发，理论联系实际，用所学的知识，对这几个问题建立理想模型，仔细分析，研究这几个问题所包涵的最根本的力学原理。关键词：平衡 阻尼 附加压力 滑动摩擦 悬挂系统Abstract This article made research of several mechanical problems which related to the car movement, include the problem of the maximum acceleration when brake the car, the relationship between the speed and braking distance, the damping function of suspension system, the additional pressure made by the movement that rigid body circles round the axis. These problems are closely related to the comfortableness, security in car driving. In the car manufacturing and development process, the comfortableness and security has always been the goal. As direct and specific forms for these goals, it has continually developed with the support of new technology and presents a trend that multiple subjects across, multiple technologies integrate, multiple theories overlap. But in which, mechanical principle as a basis is can’t be replaced; analysis to mechanical model is indispensable. This article is from the requirements of tracing the source, by linking theory with practice, using learned knowledge, to establish ideal model to these problems. On this basis, making careful analysis and investigating the most fundamental mechanical principle that included in these problems.Keywords: balance damping additional pressure sliding friction suspension system目 录中文摘要 1英文摘要 2目录 3第一章 绪论 41.1 研究动机与目的 41.2 研究背景 41.3 研究方法与系统描述 51.4 论文热莞攀 5第二章 悬挂系统的力学原理 72.1 悬挂简介 72.2 悬挂中弹簧的作用与力学原理 72.3 悬挂中减震器的作用与力学原理 9第三章 汽车中动平衡现象的研究 113.1 转动刚体的附加压力及动平衡 113.2 汽车运动过程中可能出现的附加压力问题 133.3 动平衡的检测与校正 133.3.1 车轴动平衡的校正 143.3.2 车轮动平衡的校正 16第四章 对刹车的研究 174.1 刹车系统简介 174.2 刹车最大加速度 174.2.1 导致翻车的极限加速度 174.2.2 不考虑翻车时的刹车加速度 194.3 刹车距离与行驶速度的关系 20第五章 结论 24致谢 25参考文献 26
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