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AbstractAbstract
[en] With the radial and axial displacements and the angle of rotation of the normal to the midsurface as the kinematic variables in the nodal circles, the properties of a finite element are derived on the basis of Kirchhoff's hypothesis. The deformation of the element is determined by seven generalized strains. For the dual generalized stresses the constitutive equations are derived by application of the local constitutive equations in sampling points. For the elastic behaviour they are taken to be two Gaussian integration points, while for the creep and plasticity properties a number of points along the normal in the middle section are used. Since in the case of creep and plasticity the variation of the state of stress over the thickness is history dependent, only one section is considered, thus limiting the number local stresses, that have to be stored in the course of a loading program. A strategy of solution is discussed that is robust and that will give qualitative insight, without undue emphasis on the representation of the local creep and plasticity model, which generally is also of a qualitative nature. (orig.)
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Zyczkowski, M. (ed.) (Krakow Univ. of Technology (Poland). Inst. of Mechanics and Machine Design); 732 p; ISBN 3-540-53786-4; ; 1991; p. 469-484; Springer; Berlin (Germany); 4. IUTAM symposium on creep in structures; Krakow (Poland); 10-14 Sep 1990
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Book
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Conference
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