Elastohydrodynamic Simulation of Pneumatic Sealing Friction Considering 3D Surface Topography

Chemical Engineering & Technology, vol. 46, pp. 167–174

Abstract

Abstract This contribution presents an elastohydrodynamic lubrication (EHL) model for pneumatic spool valves. For an accurate estimation of the transient friction of this tribological sealing system, the surface topography of the cylindrical sealing counterfaces of the valve housings are measured and analyzed with an optical surface measurement instrument. Based on the surface topography data, tribological properties and flow factors of the system are derived. It has been found that the consideration of the surface topography has a significant influence on the simulation results of the EHL model, lowering the calculated friction force by up to 20 %.

Authors 5

1. Niklas Bauer corresponding Aachen Institute for Fluid Power Drives and Systems

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Institute for Fluid Power Drives and Systems (ifas) Campus-Boulevard 30 52074 Aachen Germany

   RWTH Aachen University, Institute for Fluid Power Drives and Systems (ifas), Campus-Boulevard 30, 52074 Aachen, Germany

2. Matthias Baumann

   University of Stuttgart

   Affiliation as printed

   University of Stuttgart Institute of Machine Components (IMA) Pfaffenwaldring 9 70569 Stuttgart Germany

   University of Stuttgart, Institute of Machine Components (IMA), Pfaffenwaldring 9, 70569 Stuttgart, Germany

3. Simon Feldmeth

   University of Stuttgart

   Affiliation as printed

   University of Stuttgart Institute of Machine Components (IMA) Pfaffenwaldring 9 70569 Stuttgart Germany

   University of Stuttgart, Institute of Machine Components (IMA), Pfaffenwaldring 9, 70569 Stuttgart, Germany

4. Frank Bauer

   University of Stuttgart

   Affiliation as printed

   University of Stuttgart Institute of Machine Components (IMA) Pfaffenwaldring 9 70569 Stuttgart Germany

   University of Stuttgart, Institute of Machine Components (IMA), Pfaffenwaldring 9, 70569 Stuttgart, Germany

5. Katharina Schmitz Aachen Institute for Fluid Power Drives and Systems

   RWTH Aachen University

   Affiliation as printed

   RWTH Aachen University Institute for Fluid Power Drives and Systems (ifas) Campus-Boulevard 30 52074 Aachen Germany

   RWTH Aachen University, Institute for Fluid Power Drives and Systems (ifas), Campus-Boulevard 30, 52074 Aachen, Germany