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首页> 外文期刊>Proceedings of the Institution of Mechanical Engineers, Part D. Journal of Automobile Engineering >Study of the simulation model of a displacement-sensitive shock absorber of a vehicle by considering the fluid force
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Study of the simulation model of a displacement-sensitive shock absorber of a vehicle by considering the fluid force

机译：考虑流体力的车辆位移敏感减震器仿真模型研究

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摘要

In this study, a new mathematical dynamic model of a displacement-sensitive shock absorber (DSSA) is proposed to predict the dynamic characteristics of an automotive shock absorber. The performance of a shock absorber is directly related to the vehicle behaviour and performance, for both handling and ride comfort. The proposed model of the DSSA is considered as two modes of the damping force (i.e. soft and hard) according to the position of the piston. In addition, the DSSA is analysed by considering the transient zone for more exact dynamic characteristics. For the mathematical modelling of the DSSA, flow continuity equations at the compression and rebound chamber are formulated. The flow equations at the compression stroke and rebound stroke respectively are formulated. Also, flow analysis of the reservoir chamber is carried out. Accordingly, the damping force of the shock absorber is determined by the forces acting on both sides of the piston. The characteristics of the damping force are observed by the proposed method. The analytical results of the damping force characteristics are compared with the experimental results to prove the effectiveness. In particular, the effects of the displacement-sensitive orifice area on the damping force and the effects of the displacement-sensitive orifice length on the damping force are observed. The results reported herein will provide a better understanding of the shock absorber.
机译：在这项研究中，提出了一种新的位移敏感减震器（DSSA）的数学动力学模型，以预测汽车减震器的动态特性。减震器的性能直接关系到车辆的行为和性能，无论是操纵还是乘坐舒适性。根据活塞的位置，所提出的DSSA模型被认为是阻尼力的两种模式（即软和硬）。此外，通过考虑瞬态区域以获得更精确的动态特性来分析DSSA。为了对DSSA进行数学建模，公式化了压缩室和回弹室的流动连续性方程。分别建立了压缩冲程和回弹冲程的流动方程。另外，进行储液室的流动分析。因此，减震器的阻尼力由作用在活塞两侧的力决定。通过所提出的方法观察了阻尼力的特性。将阻尼力特性的分析结果与实验结果进行比较，以证明其有效性。特别地，观察到位移敏感孔口面积对阻尼力的影响以及位移敏感孔口长度对阻尼力的影响。本文报道的结果将提供对减震器的更好理解。

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