基于紊流模型的可控叶片减振器阻尼特性参数识别

Damping Characteristics Parameter Identification of Controllable Vane Damp Based on Turbulent Model

通过对可控阻尼叶片减振器结构分析,建立基于紊流模型可控叶片减振器流量阻尼特性模型,模拟减振器内部流场结构,采用试验参数识别的方法确定模型参数,分析不同温度下减振器的阻尼特性。阐明了减振器在高温高速作用下,阻尼特性采用紊流模型综合流量参数研究的方法更为准确。最后通过仿真分析与试验结果的一致性对比,验证了所提方法的可行性和准确性。这种基于试验的参数识别方法具有普遍性,识别出的参数不仅具有数学理论推导的含意,还具备明确的物理意义,并且适用性强。

A hydraulic turbulent model was established based on the controllable vane damper structure analysis,and the hydro-structure of the vane was simulated.Based on the test data in the different temperature of damping force and velocity input,the parameters about the hydraulic turbulent model were identified.In the different temperature,comparison of the test data and results of calculation with the fitting parameters showed that the parameters were correct and the method was valid.From the fitting parameters and calculation result, controllable vane damp design and character analysis could be supported.The temperature could influence the damping force under the effect of high temperature and high speed,so that the damping characteristics should be obtained based on the principle of turbulence model integrated traffic parameters study finally through the simulation analysis.Parameter identified had the implications derived from the mathematical theory and clear physical meaning.It can be applied in characteristics analysis of other types of shock absorber.