管道流体的瞬态仿真模型

来源期刊：中南大学学报(自然科学版)2000年第2期

论文作者：贺尚红 钟掘

文章页码：173 - 176

关键词：液压管道;液压传动;液压仿真;液压;瞬态分析

Key words：hydraulic oil line; tydraulic transmission; hydraulic simulation; hydraulic flow modelling; hydraulic transient analysis

摘    要：通过对管道的离散化处理,建立了流体管道频率相关摩擦仿真模型;研究了N的取值、离散管段数对仿真结果的影响及管道与集中元件和扰动激励的耦合方法,并对带容腔的流体管道系统进行了数字仿真.结果表明,该模型将管道的分布特性表示成网络形式,可方便地与各种边界条件进行耦合;仿真结果与有关文献提供的近似解析计算和实验结果吻合良好.

Abstract: By discretizating fluid pipeline, a frequency-dependent model which is convenient for simulation of hydraulic pipeline systems is established. The model represents the distributing characteristics of pipeline by network, and can couple with all kinds of boundary conditions. Several coupling methods for boundary conditions such as lumped elements and external disturbance are investigated in detail. A pipeline system with lumped volume is simulated, and the simulated results are in good agreement with experiments and approximate analytic results. Finally, the influences of N and the discretization number of pipeline on simulation are discussed, and some practical conclusions of engineering applications are drawn.