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  • Users: Coulomb
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  1. Coulomb

    HIDDEN LINES

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

    Frequency Analysis

    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?)
  3. Coulomb

    Modeling Nonstructural Components

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

    Modeling Nonstructural Components

    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.
  5. Coulomb

    Modeling Nonstructural Components

    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...
  6. Coulomb

    Location of Loads on Beam

    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...
  7. Coulomb

    Gap NLink element

    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?
  8. Coulomb

    Bolts, Nails, Material Properties

    Thank you so much for your help!
  9. Coulomb

    Bolts, Nails, Material Properties

    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...
  10. Coulomb

    FNA nonlinear link elements

    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
  11. Coulomb

    Doing multiple analysis

    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!
  12. Coulomb

    Coulomb Friction Problem continued....

    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.
  13. Coulomb

    Friction Pendulum Isolator - Coulomb Friction

    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?)...

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