Finite Element Study on the Residual Strains in a Sphere after Unloading from the Elastic-Plastic State

This paper presents a numerical simulation of elastic-plastic contact behavior during unloading of a stressed sphere against a rigid flat through the finite element method. Material dependency nature of elastic-plastic contact phenomena is illustrated and compared with previous results. Simulation c...

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Bibliographic Details
Published in:International journal of computational methods in engineering science and mechanics 2009-01, Vol.10 (4), p.277-281
Main Authors: Malayalamurthi, R., Marappan, R.
Format: Article
Language:English
Subjects:
Elastic-Plastic Contact
Loading-Unloading
Residual Strains
Sphere-Flat Contact
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Summary:This paper presents a numerical simulation of elastic-plastic contact behavior during unloading of a stressed sphere against a rigid flat through the finite element method. Material dependency nature of elastic-plastic contact phenomena is illustrated and compared with previous results. Simulation covers a wide range of material properties and dimensions. Analysis is extended up to 200 times that of critical interference. Characteristics are explained in the non-dimensional form. It is observed that contact behaviors of materials with low E/Y (Young's modulus/Yield strength) values cannot be brought under a unified solution.
ISSN:1550-2287
1550-2295
DOI:10.1080/15502280902939486