【作者】 梅奋永；

【导师】 方锡邦；

【作者基本信息】 合肥工业大学 ， 车辆工程， 2005， 硕士

【摘要】 随着科学技术的发展,人们对汽车性能的要求越来越高。在竞争日益激烈的情况下,采用新技术、新方法已成为提高产品竞争力的主要途径。虚拟样机技术集建模、仿真、优化等于一体,可以缩短产品开发周期、降低开发成本、提高产品质量,从而达到提高产品竞争力的目的。 ADAMS(Automatic Dynamic Analysis of Mechanical Systems)是当今应用最为广泛的机械系统动力学分析软件。基于虚拟样机技术,可把车辆视为多个相互联接、能够彼此相对运动的多体系统。本文利用ADAMS/VIEW软件,建立了包括车身、悬架、转向系统、轮胎、横向稳定杆等在内的整车多体模型,对各部件之间的运动和联接做了深刻的分析,通过各种途径获得了模型的相关参数。 在建立合理准确模型的基础上,结合实际车辆试验标准,文章实现了该车的操纵稳定性基础试验,通过建立的一些测量函数,使得所需试验数据直接随仿真过程而出现,解决了数据处理的困难。将仿真结果同试验结果比较发现,所建模型是合理的,并对误差做了分析。参考相关方法对试验结果进行了评价计分。 通过修改各主要特性参数,研究了悬架等的特性参数对操纵稳定性的影响,结合整车具体情况,提出了一些改善操纵稳定性的措施,具有一定的工程意义。更多还原

【Abstract】 With the development of science and technology, the performance of automobile must be more and more perfect to meet humans’ need. New technology and means are mostly used to heighten the products’ quality under increasingly scorching competition. Virtual prototype technology syncretizes modeling , simulation and optimization etc. It can be used to shorten the time and reduce the cost of research and design.ADAMS ( Automatic Dynamic Analysis of Mechanical Systems) is a simulation software of mechanical system used most widely in the world. Based on the virtual prototype technology, the automobile can be regarded as a multi-body system that parts connect and move correspondingly each other. Using ADAMS/VIEW, the article build a whole vehicle model that contains body, suspension, steering-system, tires, and stabilize bar etc. Of course, the connection and correspondingly motion should be analysed thoroughly, and get accurate data as so as possible.Then we realized virtual experimentation accord with vehicle experiment standards. The diagram that we need on the experiment can be shown on the screen through measures, which we created. The results of simulation were compared with physical experiment to validate the veracity of established model. Factors that caused the differences were discussed. Further more, we marked the simulation result accord with standards.To improve the mark, we analysed suspension parameters, which affect vehicle’s handling stability, and gave some measures to reach this goal.更多还原