Journal Article

FZJ-2019-01213

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Elastohydrodynamics for Soft Solids with Surface Roughness: Transient Effects

Scaraggi, M. (Corresponding author) ; Dorogin, L. ; Angerhausen, J. ; Murrenhoff, H. ; Persson, B.FZJ*

2017
Springer Science Business Media B.V. Dordrecht

This record in other databases:  

Please use a persistent id in citations: http://hdl.handle.net/2128/22980  doi:10.1007/s11249-017-0878-9

Abstract: A huge number of technological and biological systems involve the lubricated contact between rough surfaces of soft solids in relative accelerated motion. Examples include dynamical rubber seals and the human joints. In this study, we consider an elastic cylinder with random surface roughness in accelerated sliding motion on a rigid, perfectly flat (no roughness) substrate in a fluid. We calculate the surface deformations, interface separation and the contributions to the friction force and the normal force from the area of real contact and from the fluid. The driving velocity profile as a function of time is assumed to be either a sine function, or a linear multi-ramp function. We show how the squeeze-in and squeeze-out processes, occurring in accelerated sliding, quantitatively affect the Stribeck curve with respect to the steady sliding. Finally, the theory results are compared to experimental data.

---

Contributing Institute(s):

1. Quanten-Theorie der Materialien (IAS-1)
2. Quanten-Theorie der Materialien (PGI-1)
3. JARA-FIT (JARA-FIT)
4. JARA - HPC (JARA-HPC)

Research Program(s):

1. 141 - Controlling Electron Charge-Based Phenomena (POF3-141) (POF3-141)

Appears in the scientific report 2018

---

Database coverage:
; ; Clarivate Analytics Master Journal List ; Current Contents - Engineering, Computing and Technology ; Ebsco Academic Search ; IF < 5 ; JCR ; Nationallizenz ; SCOPUS ; Science Citation Index ; Science Citation Index Expanded ; Web of Science Core Collection

---