How can I explain the fact that a node in a ideal truss shape have 3 degree of freedom( 2 translations and one rotatios above z axis) but in the considerations for structural analysis we only refers only just two translations degrees of freedom and don´t mention the rotation(I know that the...
I discovered that we can draw the entire structure, 2D or 3D in AutoCAD14, explode all polylines, position the UCS icon on TOP view and export as DXF file.
Import in Multiframe in the same units you've drawn and you can save time in modelling in MF graphical interface. I found it's more...
Do you assign the joints of a truss-type structure as pinned or rigid?
I always use the joints as rigid but the static matrix is bigger and the analysis procedure is slower in order to calculate bending moments, shear and axial stresses.
Does anyone noticed any problems in modelling trusses...