I am modelling my structure using FEM, and my structure contains line elements (1D) such as beams and columns and area elements (2D) such as walls and columns.
My question is that, how can I proceed to do modelling, and how can I interpret the results for stress and strain, especially at the places where 1D elements meet the 2D elements? Take for example,
- A beam's Center of Gravity might not be located within the slab, but in reality the beam and slab are still touching each other. In other words the beam is offset from the slab
- A wall's center of gravity might not be located within the slab, but in reality the wall and slab are still touching each other. In other words the wall is offset from the slab
- A beam and a column are supposed to be connected together, except that now the beam is offset in left and column in right. If going by line element, they are no longer touching, although in reality, they still are.
Is this a solved problem? Any research literature that I can refer to, or any software packages that you can recommend that handle this gracefully?