The analysis of a coupled beam and shell analysis comes quite straightforward from the analysis of beams and the analysis of shells separated. Some points to take into care are:
· Beams and shells must share the connecting points when a physical connection needs to be defined. Also, a beam that is boundary of a shell must be represented with a line that is boundary of a surface.
· If a beam is represented by a line that is the boundary of one surface that represents a shell, the line is not going to be meshed, by default, with beam elements. It is necessary to explicitly tell GiD to mesh it. To do so, use:
Meshing -> Mesh criteria -> Mesh ->lines
And select the lines that represent these beams.
· It is not accepted to mesh the mixed elements with quadratic elements. So, linear elements must be used. It is advisable to set the option Internal 6-noded elements in order to have higher precision for the shell analysis.
· For the beams that are boundary of a shell surface, it is necessary to mesh as many beam elements as boundaries of the triangle elements. So, every beam will be subdivided in several line elements. In these cases, it is better to use a small number for the option Beam res granularity. For example 2 or 4.
· Results are visualized in the same way that both analyses do.
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