减震器
非线性系统
阻尼器
偏转(物理)
休克(循环)
机械
试验台
压缩性
控制理论(社会学)
磁滞
结构工程
工程类
计算机科学
机械工程
物理
经典力学
内科学
人工智能
医学
控制(管理)
量子力学
出处
期刊:Cornell University - arXiv
日期:2022-08-12
标识
DOI:10.48550/arxiv.2208.06343
摘要
Modern hydraulic shock absorbers display a wealth of nonlinear effects such as hysteresis and instabilities at high flow rates. Despite their wide application in practically all vehicles, both on- and off-road, a universal analytical model that captures the essential shock absorber dynamics and compressibility effects for various common damper architectures is lacking. This paper presents such a model and derives its system of equations from first principles for dampers of monotube- and piggyback-type. By applying the model to a typical suspension configuration, all relevant system variables, such as pressure drop, shim stack deflection, and damping force, are computed. Nonlinear oscillations and hysteresis loops, which might prove dangerous during operation, can be predicted effortlessly. The results achieved with the mathematical model are validated and agree well with test bench measurements. Furthermore, the presented approach is shown to be easily modifiable to describe the physical processes within other hydraulic shock absorber geometries in use today.
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