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首页> 外文会议>Bath Workshop on Power Transmission and Motion Control (PTMC 2001) Sep 12-14, 2001, Bath >Advanced simulation of fluid power components using DSHplus and ADAMS
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Advanced simulation of fluid power components using DSHplus and ADAMS

机译：使用DSHplus和ADAMS对流体动力组件进行高级仿真

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Efficiency improvement of an axial piston pump or motor is an important part in the design and development process. The behaviour of an axial piston machine or other displacement machines is a complex interaction between tribology of sliding contacts, pressure gradient in hydraulic volumes and dynamics and kinematics. Simulation programs are useful development tools to design these fluid power units on digital computers. At present all these programs are stand-alone tools and specialised to calculate a specific behaviour or effect of an axial piston pump or motor. To reproduce and to solve all the physical effects numerically in one program is impractical. Since the opportunity exists to couple standardised products, this is a promising approach. The paper presents a simulation approach of a displacement pump or motor using two different kinds of simulation programs. The tribology, e.g. surface roughness, mixed lubrication and contact pressure, and the hydraulic, e.g. the computed pressure gradient and volume flows, are calculated numerically by means of DSHplus. The integration of all kind of forces and torques, e.g. mass moment of inertia and pressure forces, to solve the equation of motion is calculated with a multiple body simulation program, in this case ADAMS by Mechanical Dynamics. The modular structure of the approach allows all designs of displacement machines to be simulated and not only axial piston pumps or motors. The flexible modelling of mechanical structures in ADAMS makes it possible to create various simulation models of motion, such as cylinders and valves. The mechanical simulation program is coupled with the hydraulic simulation program DSHplus. Both programs run simultaneously on PCs and exchange data at discrete simulation time intervals. To compare simulation results with other results computed by various simulation programs an axial piston pump was chosen. Special attention is paid to simulation time and precision of the calculated results.
机译：轴向柱塞泵或电动机的效率提高是设计和开发过程中的重要部分。轴向活塞式机器或其他活塞式机器的行为是滑动接触的摩擦学，液压容积中的压力梯度与动力学和运动学之间的复杂相互作用。仿真程序是用于在数字计算机上设计这些流体动力装置的有用的开发工具。目前，所有这些程序都是独立工具，专门用于计算轴向柱塞泵或电动机的特定行为或效果。在一个程序中以数字方式再现和解决所有物理效应是不切实际的。由于存在耦合标准产品的机会，因此这是一种很有前途的方法。本文介绍了使用两种不同类型的仿真程序对容积式泵或电动机进行仿真的方法。摩擦学表面粗糙度，混合润滑和接触压力以及液压，例如计算出的压力梯度和体积流量通过DSHplus进行数值计算。各种力和扭矩的整合，例如通过多体仿真程序（在这种情况下为ADAMS by Mechanical Dynamics）来计算质量惯性矩和压力，以解决运动方程。该方法的模块化结构允许模拟位移机的所有设计，而不仅限于轴向柱塞泵或电动机。 ADAMS中机械结构的灵活建模使创建各种运动仿真模型（例如气缸和阀门）成为可能。机械仿真程序与液压仿真程序DSHplus结合在一起。这两个程序在PC上同时运行，并以离散的仿真时间间隔交换数据。为了将模拟结果与各种模拟程序计算出的其他结果进行比较，选择了轴向柱塞泵。要特别注意仿真时间和计算结果的精度。

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