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Finite element impl...
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Fredriksson, PerKTH,Hållfasthetslära (Inst.)
(författare)
Finite element implementation and numerical issues of strain gradient plasticity with application to metal matrix composites
- Artikel/kapitelEngelska2009
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Elsevier BV,2009
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LIBRIS-ID:oai:DiVA.org:kth-8036
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https://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-8036URI
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https://doi.org/10.1016/j.ijsolstr.2009.07.028DOI
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Språk:engelska
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Sammanfattning på:engelska
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QC 20100723. Uppdaterad från submitted till published (20100723).
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A framework of finite element equations for strain gradient plasticity is presented. The theoretical framework requires plastic strain degrees of freedom in addition to displacements and a plane strain version is implemented into a commercial finite element code. A couple of different elements of quadrilateral type are examined and a few numerical issues are addressed related to these elements as well as to strain gradient plasticity theories in general. Numerical results are presented for an idealized cell model of a metal matrix composite under shear loading. It is shown that strengthening due to fiber size is captured but strengthening due to fiber shape is not. A few modelling aspects of this problem are discussed as well. An analytic solution is also presented which illustrates similarities to other theories.
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Gudmundson, PeterKTH,Hållfasthetslära (Inst.)(Swepub:kth)u15xttyk
(författare)
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Mikkelsen, Lars PilgaardTech Univ Denmark, Risø Natl Lab Sustainable Energy, Mat Res Dept
(författare)
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KTHHållfasthetslära (Inst.)
(creator_code:org_t)
Sammanhörande titlar
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Ingår i:International Journal of Solids and Structures: Elsevier BV46:22-23, s. 3977-39870020-76831879-2146
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