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When I print my drawing (3D), the hidden lines appear, even though I turned them off in the current view?

I need to do a frequency analysis on my model, but am not entirely sure how the features in SAP work to do that (ie. what functions do I have to define?)

Continuing my question: Does the 'add additional mass to node' feature actually apply to static analysis or only dynamic analysis?

I am not able to make it work. Attaching additional mass doesn't seem to make a difference. Any idea what I am doing wrong. I tried changing the mass source definition - no change. Thanks for your help.

I am trying to model nonstructural components; hence mass that is additionally attached to the frame. I want to attach the mass to the frame with a stiff link. Hence do I draw a 2-joint link in which I specify high stiffnesses (how high?) in the translational degrees of freedom and then add...

I have another question concerning the gap element and specifying the directions. The stiffness is defined in the u1 direction, which is also the direction of the physical separation (equal to 'open'). So, for a physical separation between a wall and a shelf in the horizontal direction, do I...

I also need to define a Gap NLlink to model the gap between a shelf and an adjacent wall. How do you determine the stiffness of the gap?

Thank you so much for your help!

Does anyone know which values I can effectively use for the axial and shear stiffness of bolts and nails which I am modeling as link (nonlinear) elements. Also, for contact surfaces what are stiffnesses that I should be using? I am also looking for material properties of medium density fibre...

Is anyone familiar with nonlinear modal time history (FNA) cases that continue from other FNA cases. I need to model the gravity across a nonlinear link element in order to determine its response to a nonlinear harmonic force. Please help, Theresa

Is anyone familiar with nonlinear modal time histor (FNA). I need to model the gravity load across a nonlinear link and need to understand FNA better. Please help!

Just to add to my previous question. I don't know how to specify that the post-slip stiffness is zero. I only see options for specifying nonlinear stiffness.

I am trying to determine the sliding distance of a lumped mass (SDOF system) under a periodic load. I am using a one-joint link (friction-pendulum isolator) where I have specified the radius of curvature to be zero. I have specified a stiffness for u1 and u2 (is u2 zero since it is sliding?)...