After the Extreme tab is selected in the Influence line dialog, the following displays.
The options in the dialog let you indicate a surface-related quantity (defined for a plate or shell structure) for which the influence lines are presented:
- Stresses in the main coordinate system s1, s2, s12, and the angle between the directions of the local and the main axes
- Membrane forces in the main coordinate system N1, N2, N12, and the angle between the directions of the local and the main axes
- Moments in the main coordinate system M1, M2, M12, and the angle between the directions of the local and the main axes
- Maximum shearing stress in the main coordinate system t12
- Maximum shear force in the main coordinate system Q12