典型文献
Theoretical Model of Dynamic Bulk Modulus for Aerated Hydraulic Fluid
文献摘要：
Existing models of bulk modulus for aerated hydraulic fluids primarily focus on the effects of pressure and air fraction, whereas the effect of temperature on bulk modulus is disregarded. Based on the lumped parameter method and the full cavitation model, combined with the improved Henry's law and the air polytropic course equation, a theoretical model of dynamic bulk modulus for an aerated hydraulic fluid is derived. The effects of system pressure, air fraction, and temperature on bulk modulus are investigated using the controlled variable method. The results show that the dynamic bulk modulus of the aerated hydraulic fluid is inconsistent during the compression process. At the same pressure point, the dynamic bulk modulus during expansion is higher than that during compression. Under the same initial air faction and pressure changing period, a higher temperature results in a lower dynamic bulk modulus. When the pressure is lower, the dynamic bulk modulus of each temperature point is more similar to each other. By compar-ing the theoretical results with the actual dynamic bulk modulus of the Shell Tellus S ISO32 standard air-containing oil, the goodness-of-fit between the theoretical model and experimental value at three temperatures is 0.9726, 0.9732, and 0.9675, which validates the theoretical model. In this study, a calculation model of dynamic bulk modulus that considers temperature factors is proposed. It predicts the dynamic bulk modulus of aerated hydraulic fluids at differ-ent temperatures and provides a theoretical basis for improving the analytical model of bulk modulus.
文献关键词：
中图分类号：
作者姓名：
Xiaoming Yuan;Weiqi Wang;Xuan Zhu;Lijie Zhang
作者机构：
Hebei Key Laboratory of Heavy Machinery Fluid Power Transmissionand Control,Yanshan University,Qinhuangdao 066004,China;Key Labora-tory of Advanced Forging&Stamping Technology and Science,Ministryof Education of China,Yanshan University,Qinhuangdao 066000,China;State Key Laboratory of Fluid Power and Mechatronic Systems,Zhejiang University,Hangzhou 310027,China
文献出处：
引用格式：
[1]Xiaoming Yuan;Weiqi Wang;Xuan Zhu;Lijie Zhang-.Theoretical Model of Dynamic Bulk Modulus for Aerated Hydraulic Fluid)[J].中国机械工程学报,2022(05):350-360
A类：
Aerated,Tellus,ISO32
B类：
Theoretical,Model,Dynamic,Bulk,Modulus,Hydraulic,Fluid,Existing,models,bulk,modulus,aerated,hydraulic,fluids,primarily,focus,effects,pressure,air,fraction,whereas,disregarded,Based,lumped,parameter,method,full,cavitation,combined,improved,Henry,law,polytropic,course,equation,theoretical,dynamic,derived,system,are,investigated,using,controlled,variable,results,show,that,inconsistent,during,compression,process,At,same,point,expansion,higher,than,Under,initial,faction,changing,period,lower,When,each,more,similar,other,By,compar,actual,Shell,standard,containing,oil,goodness,fit,between,experimental,value,three,temperatures,which,validates,In,this,study,calculation,considers,factors,proposed,It,predicts,differ,provides,basis,improving,analytical
AB值：
0.456843
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机标中图分类号，由域田数据科技根据网络公开资料自动分析生成，仅供学习研究参考。
