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On the Appropriate ...
On the Appropriate Use of Representative Stress Quantities at Correlation of Spherical Contact Problems
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- Olsson, Erik (författare)
- KTH,Hållfasthetslära (Inst.)
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- Larsson, Per-Lennart (författare)
- KTH,Hållfasthetslära (Inst.)
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KTH Hållfasthetslära (Inst) (creator_code:org_t)
- 2013-02-16
- 2013
- Engelska.
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Ingår i: Tribology letters. - : Springer Science and Business Media LLC. - 1023-8883 .- 1573-2711. ; 50:2, s. 221-232
- Relaterad länk:
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https://urn.kb.se/re...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- Correlation of contact problems is discussed in a detailed manner with focus on spherical contact. The finite element method is used to determine appropriate stress quantities, representative stresses, aiming at a general description of contact quantities such as mean contact pressure, and the size of the contact area. It is shown that the mean contact pressure can be well described by a single master curve, while this is not so for the size of the contact area. The latter feature is explained partly by a pronounced effect from elastic deformation, but is also shown that large deformation effects can have a substantial influence on correlation attempts. The analysis is restricted to classical Mises elastoplasticity, but the results can also serve as a guideline for similar attempts when using more advanced constitutive modeling. An obvious application of the present results concerns material characterization by indentation testing.
Nyckelord
- Contact correlation
- Contact pressure
- Contact area
- Large deformations
- Mises plasticity
Publikations- och innehållstyp
- ref (ämneskategori)
- art (ämneskategori)
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