双横臂悬架优化.docx

成绩：_______专业课程设计说明书设计题目：双横臂悬架优化专业班级：机制1222 学生姓名：覃学居学号： 120202227 指导教师：孟彩茹河北工程大学科信学院2016 年 1月 6 日摘 要本文以某车的前双横臂独立悬架为研究对象，采用访车的实际结构参数，运用 ADAMS/Car 软件建立了该车的前悬架子系统、转向系子系统组成的悬架系统模型。应用该模型对该车前独立悬架模型进行了运动学、动力学仿真分析，得出了其车轮外倾角、前轮前束角、主销后倾角等前轮定位参数、悬架刚度、侧倾刚度、侧倾中心等参数在前轮左右轮心上下跳动时的变化规律。并且利用前人的经验对这些特性曲线进行分析，发现原悬架存在不合理的地方，并针对存在的问题提出相应的解决方案。 然后，通过多步骤调整前独立悬架的有关参数，重新仿真分析、对比了这些参数对平顺性、整车操纵稳定性的影响，从不同的方案中选择较优的方案，从而得出较优的设计参数。 最后，应用解析几何的方法，对愿悬架左右轮上下跳动时的前轮定们的参数的变化情况，对比仿真结果与解析计算结果，基本吻合，由此证明了原悬架建模的正确性。关键字：双横臂独立悬架、ADAMS/Car、建模仿真分析、优化设计。【Abstract】In this paper, a Car before double wishbone typed independent suspension frame as the research object, USES the Car to visit the actual structure of the parameters, the vehicles front suspension was established by applying the software of ADAMS/Car subsystem, steering are system consisting of a suspension system model. Application of the model of the vehicle front independent suspension kinematics and dynamics simulation analysis, it is concluded that the wheel camber Angle, the front wheel toe Angle, caster Angle, wheel alignment parameters, such as suspension stiffness, roll, roll stiffness center around the front wheel parameters such as the heart beats. Predecessors and use the experience of these characteristic curve analysis, found the original suspension is not reasonable place, and put forward the corresponding solutions to existing problems. Then, by multi-step independent suspension before the adjustment of the parameters, the simulation analysis, comparison of these parameters on the ride comfort, the influence of the vehicle steering stability, the better project from different scheme selection, thereby the optimal design parameters are obtained. Finally, the application of analytic geometry method, to let suspension wheel jumping up and down around the front wheel on the changes of the parameters, the simulation results, and the numerical result was consistent, thus prove the validity of the origina