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  1. farzad1366

    FFT curves and structure displacement

    Dear all I'm analyzing a structure with 7 records and getting the top displacement, how could i show the differences with fft curves?
  2. farzad1366

    Invalid float value in response spectrum analysis

    thread799-183142 Dear all I did the same way which is described in the upper thread but i get this error: Invalid float value. what should i do now.
  3. farzad1366

    Response spectrum outputs

    Dear all how i could reaction force and moment in partitions duo to response spectrum analysis because everything i choose has a 0 magnitude.
  4. farzad1366

    Gravity before dynamic analysis

    Dear all does anyone know how to define gravity load(weight)before a dynamic analysis in shell structures? i know how to do it for continuum elements but not for shells regards.
  5. farzad1366

    Verification

    Dear All could anyone tell me how to verify a topic if there is differences in dimention?
  6. farzad1366

    Connecting to different shells

    Dear all I would like to connect to different shells in a section cut, How it could be possible for me to connect them and have a one shell?
  7. farzad1366

    Fiber elements and pushover analysis

    Dear all if we use fiber element instead of plastic hinges and we have a pushover analysis, how show we get Vs(first yeild)?
  8. farzad1366

    ACI 307 wind load

    as in the aci-307 4.2.3.2 if shells outside diameter at h/3 is less than 1.6 outside diameter in top we should use one kind of formula, so if it is not what should we do?
  9. farzad1366

    Non-linear analysis in sap2000

    you could use fiber for your elements.
  10. farzad1366

    Shell Moment Output

    show forces/stresses - shells - shell stresses and then get your desire component.
  11. farzad1366

    Could sap2000 design shells in layered form?

    Could sap2000 design shells in layered form? layered of concrete and rebars in nonlinear position.
  12. farzad1366

    Shells with variable thickness

    i made the conical shell by rotating a line around z axis, so the point are in their correct position, then i made a join pattern and assigned cone's generator formula to the points. but it is confusing for me when i want to do something about the change of the thickness along z axis, i should...
  13. farzad1366

    How to define a spectrum and response spectrum analysis in abaqus

    i do not have the documentation. would it be possible for you to upload the example somewhere for me?
  14. farzad1366

    How to define a spectrum and response spectrum analysis in abaqus

    Dear all I would like to define a spectrum from a specification and run a response spectrum analysis, how i could do this?
  15. farzad1366

    It is not possible to make groups

    Dear all i've made a conical shell in sap2000 and i can't make groups for each level, i select any point or element at each level or both but when i make a group with these it is not useful and i can't use them for section group because there would be no output in these sections? what should i do?
  16. farzad1366

    Shells with variable thickness

    so,at last would it be possible to make variable thickness shells in sap2000 and connect two different variable thickness shells together?
  17. farzad1366

    Shells with variable thickness

    Dear avscorreia does it work with shell-layered/nonlinear? because when you want to define an element it is rectangular or circular, so there would be a constant radius over its height. Is it possible to define a cone like thing in sap with this one? thanks a lot.
  18. farzad1366

    Shells with variable thickness

    Dear all I'm trying to model a shell with variable thickness in it's height. could anyone show me how to do this kind? thanks a lot.
  19. farzad1366

    Calibration/verification and validation

    could you please using an example in the software world. for example i've modeled a chimney and run a pushover or dynamic analysis. how i could verify mine with the others. thanks a lot.
  20. farzad1366

    shells weight in sap2000

    Dear all i've been modeled a vertical cylindrical shape in sap2000 by using shell/layered, defined material weights per unit volume,run the simple analysis. when i checked the outputs i noticed that the Fz in display-show tables which it is the dead load, it's 1/3 of the actual effect with the...

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