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On large deformations of thin elasto-plastic shells: implementation of a finite rotation model for quadrilateral shell elementBrank, Boštjan ; Perić, Djordje ; Damjanić, FranoA large-deformation model for thin shells composed of elasto-plastic material is presented in this work. Formulation of the shell model, equivalent to the two-dimensional Cosserat continuum, is ... developed from the three-dimensional continuum by employing standard assumptions on the distribution of the displacement field in the shell body. A model for thin shells is obtained by an approximation of terms describing the shell geometry. Finite rotations of the director field are described by a rotation vector formulation. An elasto-plastic constitutive model is developed based on the von Mises yield criterion and isotropic hardening. In this work, attention is restricted to problems where strains remain small allowing for all aspects of material identification and associated computational treatment, developed for small-strain elastoplastic models, to be transferred easily to the present elasto-plastic thin-shell model. A finite element formulation is based on the four-noded isoparametric element. A particular attention is devoted to the consistent linearization of the shell kinematics and elasto-plastic material model, in order to achieve quadratic rate of asymptotic convergence typical for the Newton-Raphson-based solution procedures.Source: International journal for numerical methods in engineering. - ISSN 0029-5981 (Vol. 40, 1997, str. 689-726)Type of material - article, component partPublish date - 1997Language - englishCOBISS.SI-ID - 68711
Author
Brank, Boštjan |
Perić, Djordje |
Damjanić, Frano
Topics
finite elements |
shells |
large deformations |
finite rotations |
elasto-plasticity
source: International journal for numerical methods in engineering. - ISSN 0029-5981 (Vol. 40, 1997, str. 689-726)
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Database name | Field | Year |
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Brank, Boštjan | 10562 |
Damjanić, Frano | 08744 |
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