基于多物理效应的双伸缩立柱动态特性建模仿真  

Modeling and Simulation of Dynamic Characteristics for Double Telescopic Prop with Multiple Physical Effects

作　　者：吴会刚 刘昊 徐鹏 WU Hui-gang;LIU Hao;XU Peng(Beijing Tiandi-marco Electro-hydraulic Control System Co.,Ltd.,Beijing 100013;Siemens Industry Software(Beijing)Co.,Ltd.,Beijing 100102)

机构地区：[1]北京天地玛珂电液控制系统有限公司,北京100013 [2]西门子工业软件(北京)有限公司,北京100102

出　　处：《液压与气动》2020年第2期170-174,共5页Chinese Hydraulics & Pneumatics

摘　　要：为充分反映实际物理过程,基于动态接触理论和管道分布参数模型,考虑结构刚度、液容、液感等因素,建立了双伸缩立柱的数学和液压仿真模型。模型解算结果表明,在冲击载荷作用下,立柱动态主要由液体容性决定,引起很高的冲击压力;液感效应则会导致冲击瞬间立柱内液体两端出现相位差和压差,并附加高频压力波;缸体结构刚度则引起表观模量的降低。所建模型能够较好地体现立柱的稳态和动态特性,进而与阀类模型开展联合仿真,为高性能立柱控制阀的设计、优化提供支持。To fully represent the actual physical process,a mathematical and hydraulic model of a double telescopic prop with the consideration of structural stiffness,hydraulic capacity and inertia effect is established,based on the dynamic contact theory and pipe distributed parameter model.The solution of the model shows that,under impact loading,the prop s dynamics is mainly dominated by the hydraulic capacity,resulting in drastic impact pressure;The inertia effect causes phase and pressure differences between the both ends of liquid in the prop,while the cylinder s stiffness reduces the apparent modulus.The established model could represent the steady and dynamic performances of the prop,thus by co-simulating with the valve s model,supporting the design and optimization of high-performance prop control valves.

关 键 词：双伸缩立柱 冲击载荷 管道动态 传输线理论 

分 类 号：TH137[机械工程—机械制造及自动化] TD355[矿业工程—矿井建设]