开发了一种具有阻尼切换功能的两级阻尼半主动液压减振器，利用MTS831对其动态特性进行了测试分析。基于流-固耦合有限元方法对该减振器的动态特性进行了建模与分析。计算结果表明，减振器阻尼力试验值与计算值偏差小于15%，为此验证了模型的正确性。分析了减振器油液的粘度、阻尼孔的直径等参数对减振器性能的影响。本文的试验方法与建模方法，可用于半主动液压减振器的开发与研究。
Abstract
A semi-active hydraulic shock absorber was designed and manufactured, and its dynamic characteristics were measured using MTS831. A fluid-structure interaction (FSI) method was used to build the dynamic model of this absorber and calculate its dynamic characteristics. The comparison between the calculated data and the measured ones showed that the error between the damping force of the absorber measured and that calculated is less than 15%, so the correctness of the absorber’s dynamic model built with the FSI method is verified. The influences of the absorber’s parameters, such as, oil viscosity and diameter of damping orifice on its dynamic performances were also analyzed. The proposed modeling method and test one provided a reference for further studying semi-active hydraulic shock absorbers.
关键词
半主动液压减振器 /
动态特性 /
流-固耦合 /
有限元分析
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Key words
semi-active hydraulic shock absorber /
dynamic characteristics /
fluid-structure interaction (FSI) /
finite element analysis
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