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Title of article :
Analysis of reinforced and thin-walled structures by multi-line refined 1D/beam models
Author/Authors :
Carrera، نويسنده , , E. Leipzig-Pagani، نويسنده , , A.، نويسنده ,
Issue Information :
ماهنامه با شماره پیاپی سال 2013
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Abstract :
This paper focuses the attention on the use of appropriate combinations of refined one-dimensional (1D) beam theories to analyze thin-walled, reinforced structures. The cross-section of a slender body is seen as the sum of different sub-domains. Each sub-domain is subsequently used as the cross-section of a beam discretization. Displacement variables are then expanded around the beam axis of each sub-domain by using refined 1D models which are based on the Carrera Unified Formulation. The order of the beam elements can vary in different sub-domains. This subdivision has been called “multi-line” as opposed to the “one-line” approach of classical beam theories. 1D compatibility conditions of the displacements at selected points of the sub-domain interface boundaries are imposed by using Lagrange multipliers. Various problems have been analyzed to highlight the advantages and disadvantages of the present multi-line approach. It is concluded that the multi-line approach appears very effective in the case of thin-walled sections made by locally connected walls as well as in the case of reinforced structures.
Keywords :
Unified formulation , Beams , Higher-order theories , Reinforced structures , Multi-line
Journal title :
International Journal of Mechanical Sciences
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