GfT-Forderpreis 2023 Numerical Study on Anisotropic EHL Contacts with Short Fiber Reinforced Polymers

Moritz Lengmuller, Enzo Maier, Thomas Lohner, Karsten Stahl

Research output: Contribution to journalArticlepeer-review

Abstract

Fiber-reinforced materials feature transversely iso-tropic elasticity. Although its influence on pressures, shapes, and sizes has been studied extensively for dry contacts, the transferability to lubricated contacts is fragmented. This numerical study investigates how the content and orientation of short fibers in fiber-reinforced polymers (FRP) affect elastohydrodyna-mic lubrication (EHL) of point contacts. Material properties are modeled with Tandon-Weng homogeniza-tion. For EHL modeling, a fully coupled approach based on finite element discretization is used. Results on hydrodynamic pressure and film thickness as well as material stress distribution are analyzed. It is shown that the combination of fiber content and orientation defines the effective contact stiffness that determines the contact shape, size, and film thickness.

Original languageEnglish
Pages (from-to)54-57
Number of pages4
JournalTribologie & Schmierungstechnik
Volume70
Issue number4-5
DOIs
StatePublished - Sep 2023

Keywords

  • elastohydrodynamic lubrication (EHL)
  • short fiber reinforced polyamide (PA66)
  • transversely isotropic elasticity

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