液压减振器随机热力学模型与油温变化研究

为了获得具有更多信息和更加接近工程实际的液压减振器油温热力学模型,将随机不确定性理论引入到液压减振器油温传统热力学模型中进行研究。将液压油密度、导热系数、比热容和运动粘度作为随机变量,运用求解函数数字特征的代数综合法建立减振器随机热力学模型,进而获得油液传热过程规律。将油温随机热力学模型研究结果和传统模型的计算结果与实验结果进行比较,证明随机不确定性理论的引入可行且随机热力学模型比传统模型更加优越。

Stochastic thermodynamic model and oil temperature change of hydraulic shock absorber

In order to obtain a thermodynamic model of a hydraulic shock absorber which contains much more information and is much more realistic than the traditional model,the research is carried out through introducing the stochastic uncertainty theory into the traditional thermodynamic model of the hydraulic shock absorber.The hydraulic oil density,thermal conductivity,specific heat capacity and kinematic viscosity are taken as random variables.The stochastic thermodynamic model of the shock absorber is established with the algebra synthesis method of function digital characteristics and the laws of heat-transfer process about oil are obtained.The results of the stochastic thermodynamic model and the traditional model are compared with experimental results.The research shows that the introduction of the stochastic uncertainty theory is feasible and the stochastic thermodynamic model is superior to the traditional model.