Experimental characterisation of friction functions for finite element analysis modelling of elastomeric seals

Authors: Daley, J.R.¹; Lam, D.¹; Weale, D.J.²; Mercy, M.V.²

Source: Plastics, Rubber and Composites, Volume 29, Number 4, April 2000 , pp. 199-204(6)

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Abstract:

In the non-linear finite element analysis of elastomers, friction coefficients remain one of the largest unknowns within the modelling process. Even given precise material models, geometry, loading, and boundary conditions, without an accurate friction function, errors are built back into the calculations. The possible value and type of friction function and the corresponding range of computerised results imply an exact solution can only be estimated, and the designer returns to engineering judgement for the limit of the solution. In the present work, the use of modular experimental friction tests has lead to the production of friction functions for elastomers under various assembly conditions. Correlation between experimental and theoretical finite element analysis results is discussed and limitations in the testing procedures are highlighted. Extending the friction models to more realistic sealing designs and operational environments is discussed and the accuracy of employing such measures theorised.

Document Type: Regular Paper

DOI: http://dx.doi.org/10.1179/146580100101540950

Affiliations: 1: Forsheda Ltd, Dowty Engineered Seals, Ashchurch, Tewkesbury, Gloucestershire, GL20 8JS, UK 2: The School of Manufacturing and Mechanical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, UK

Publication date: 2000-04-01

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