工程车辆油气悬挂温度场影响因素分析

发布时间：2018-05-06 00:08

本文选题：油气悬挂 + 温度场　；参考：《机床与液压》2017年21期

【摘要】：油气悬挂内部物理状态对其输出特性具有重要影响,其中温度场的变化是不可忽略的重要因素。根据油气悬挂的结构特点,搭建力学模型;基于传热学理论,考虑了缸筒和活塞杆的热容对油气悬挂温升的影响,运用集中参数热模型法建立了油气悬挂的热力学模型,并将其与油气悬挂的非线性输出力数学模型相结合,得出了油气悬挂温度变化的规律。搭建油气悬挂周期激励试验台,通过油气悬挂热力学模型的计算结果和油气悬挂周期性激励加载的试验结果都表明:油液是影响悬挂温升的主要内部因素,而且在外界激励存在的情况下,由于与外界环境的热量交换,悬挂的温度会逐步达到一个平衡的状态;同时试验结果中输出力的变化趋势表明:悬挂系统温度变化对悬挂输出力的影响是不能忽略的,在实际中应加以重视。
[Abstract]:The physical state of oil and gas suspension has an important influence on its output characteristics, and the change of temperature field is an important factor that can not be ignored. Based on the theory of heat transfer, considering the influence of the heat capacity of cylinder and piston rod on the temperature rise of oil and gas suspension, the thermodynamic model of oil / gas suspension is established by means of the lumped parameter thermal model method. Combined with the mathematical model of nonlinear output force of oil and gas suspension, the law of temperature change of oil and gas suspension is obtained. Based on the calculation results of thermodynamic model of oil and gas suspension and the experimental results of periodic exciting loading of oil and gas suspension, it is shown that oil is the main internal factor affecting the temperature rise of suspension. And in the case of external excitation, because of the heat exchange with the external environment, the suspended temperature will gradually reach a balanced state; At the same time, the trend of the output force in the test results shows that the influence of the temperature change of the suspension system on the output force can not be ignored, which should be paid more attention to in practice.
【作者单位】：南通开放大学机电工程学院;
【基金】：国家软科学计划科技部资助项目(2014GXS4B046)
【分类号】：TU603;U463.33

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