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Simulative and experimental investigation of tribological contact cylinder block - valve plate of axial piston machines

轴向柱塞机缸体-配流盘摩擦接触模拟与实验研究

基本信息

批准号：
247001897
负责人：
Dr.-Ing. S Gels
金额：
--
依托单位：
Institut für fluidtechnische Antriebe und Systeme (ifas)
依托单位国家：
德国
项目类别：
Research Grants
财政年份：
2014
资助国家：
德国
起止时间：
2013-12-31 至 2016-12-31
项目状态：
已结题

来源：
https://gepris.dfg.de/gepris/projekt/247001897?language=en
关键词：
Simulative experimental investigation tribological contact

项目摘要

Contents and target of the project is a better understanding of the tribological contact between cylinder block and valve plate of an hydraulic axial piston machine. To reach this target, a simulation program should be developed and set up. The results from the simulation should be compared to test-bench measurements.During the project phase, the build-up of the simulation program should be accomplished first. For this task, a lot of preliminary work and experience at IFAS can be used. The simulation program will be a stand-alone application, which allows a combined simulation of the Reynolds-equation for the gap and the deformation of the essential physical parts in a short simulation time. There are no commercial programs available, which allow this kind of simulation. The simulation should be improved stepwise during the project phase.To verify the simulation results, a test bench should be designed and constructed at IFAS. The test-bench should not only be used to verify the simulation program, but also to investigate modified materials or geometries of the piston-cylinder-contact.The research targets can be summarized as follows:- Simulation of viscous and mixed friction between cylinder block and valve plate, preferably with a good accuracy,- Gain of knowledge about wear at this tribological contact,- Replacement of machine parts of brass in this contact and use of PVD- or other coatings instead,- Investigation of changes in geometry to reduce friction losses and to improve the lifetime and efficiency of the machine.

本课题的研究内容和目标是更好地了解液压轴向柱塞机气缸体与阀板之间的摩擦学接触问题。为了达到这一目标，必须开发和建立一个模拟程序。仿真结果应与试验台测量结果进行比较。在项目阶段，应首先完成仿真程序的构建。对于这项任务，可以使用IFAS的许多前期工作和经验。该模拟程序将是一个独立的应用程序，它允许在短模拟时间内对缝隙的雷诺方程和关键物理部件的变形进行联合模拟。目前还没有允许这种模拟的商业程序。为了验证仿真结果，需要在IFAS设计和建造一个测试平台。试验台不仅应该用来验证模拟程序，还应该用来研究活塞-气缸-接触的改性材料或几何形状。研究目标可以概括如下：-模拟气缸体和阀板之间的粘性和混合摩擦，最好具有良好的准确性，-获得关于这种摩擦学接触下的磨损的知识，-更换这种接触中的黄铜部件，并使用PVD-或其他涂层--研究几何形状的变化，以减少摩擦损失，提高机器的寿命和效率。