All of the strengths are represented related to the local axes systems of every shell (except the strengths in main axes). The visualization will be generally with a Contour Fill of every component of the strength although there are other ways to visualize them. To see the numerical value of the strength that is being visualized, choose:
Label -> All in -> Results
Label -> Select -> Results (and select several Gauss points inside the elements of the mesh)
To hide the numerical results select:
Label -> Off
Both commands can be found in the menu that appears when pressing the secondary mouse button over the screen.
The strengths are the following:
Name |
Units chosen |
Remarks |
|
Axial force |
Nx’ , Ny’ , Nx’y’ |
kN/m |
Axial force in all the shell thickness per unit width of the shell |
Momentum |
Mx’ , My’ , Mx’y’ |
kN·m/m |
Momentum per unit width of the shell |
Shear |
Qx’ , Qy’ |
kN/m |
Shear strength per unit width of the shell |
The sign criteria for these strengths is:
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Note: See that Mx’ momentum is contained inside plane X’Z’. This criteria is different from the strength criteria in beams or in constraints, where the rotation in X’ is the one that rotates around X’ axe. The rotation axe criteria for shell momentum are inherited from the plate criteria. In that case, as there are only two rotations in a plate, this choosing looked appropriate. For rotations in 3D, as there are 3, it is necessary to use the other criteria.
As a example, this is the M x’ momentum on the shells:
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