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液压油弹性模量提高方法与试验（Method and Experiment for Increasing Effective Fluid Bulk Modulus in Hydraulic Systems）
闭式液压系统 有效体积弹性模量 抽真空 试验
2010/4/1
分析了液压系统中含气量、工作压力等参数对油液有效体积弹性模量的影响规律，在此基础上采用抽真空除气与弹性模量检测相结合的方法提高油液弹性模量至期望值，并试验于某大型液压泵站。应用结果表明：含气量对弹性模量值影响显著，利用抽真空能够有效减小油液的含气量，将弹性模量值由821.3MPa提高至1201MPa；该方法在闭式液压系统中能够实现油液弹性模量的提高。 Effective fluid bulk mo...
CONFINING PRESSURE-DEPENDENCY OF BULK MODULUS OF SAND DURING LIQUEFACTION
bulk modulus liquefaction shear modulus hollow cylindrical tosional shear test elasto-plastic constitutive model
2008/12/22
In the elasto-plastic constitutive model, bulk modulus is one of the most important parameters to control the change of effective stress under undrained condition. However, the experimental research ...