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Numerical analysis ...
Numerical analysis of ellipticity condition for large strain plasticity
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- Wcisło, Balbina (författare)
- Cracow University of Technology/ Tadeusz Kościuszko University of Technology
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- Pamin, Jerzy (författare)
- Cracow University of Technology/ Tadeusz Kościuszko University of Technology
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- Kowalczyk-Gajewska, Katarzyna (författare)
- Institute of Fundamental Technological Research, PAN
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- Menzel, Andreas (författare)
- Lund University,Lunds universitet,Hållfasthetslära,Institutionen för byggvetenskaper,Institutioner vid LTH,Lunds Tekniska Högskola,Solid Mechanics,Department of Construction Sciences,Departments at LTH,Faculty of Engineering, LTH,Technical University of Dortmund
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(creator_code:org_t)
- Author(s), 2018
- 2018
- Engelska.
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Ingår i: Computer Methods in Mechanics, CMM 2017 : Proceedings of the 22nd International Conference on Computer Methods in Mechanics - Proceedings of the 22nd International Conference on Computer Methods in Mechanics. - : Author(s). - 9780735416147 ; 1922
- Relaterad länk:
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http://dx.doi.org/10...
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https://aip.scitatio...
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https://lup.lub.lu.s...
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https://doi.org/10.1...
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Abstract
Ämnesord
Stäng
- This paper deals with the numerical investigation of ellipticity of the boundary value problem for isothermal finite strain elasto-plasticity. Ellipticity can be lost when softening occurs. A discontinuity surface then appears in the considered material body and this is associated with the ill-posedness of the boundary value problem. In the paper the condition for ellipticity loss is derived using the deformation gradient and the first Piola-Kirchhoff stress tensor. Next, the obtained condition is implemented and numerically tested within symbolic-numerical tools AceGen and AceFEM using the benchmark of an elongated rectangular plate with imperfection in plane stress and plane strain conditions.
Ämnesord
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Annan maskinteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Other Mechanical Engineering (hsv//eng)
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