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  1. Dzonni

    SAP2000 FILE OPEN ERROR # 0 and FILE OPEN ERROR # -3

    Dear SAP2000 users, This is an error message I am getting after trying to run some of my SAP2000 models, so I am wondering has anybody encountered this before (link in the attachment)? I have two different computers with Windows 10 and one of them has no problem running the analysis, while the...
  2. Dzonni

    ETABS Pier Vs. Spandrel

    Hello, everybody! I have a question regarding the ETABS modelling of shell elements above openings in walls. To put it short: is there a rule to help me instantaneously decide whether to design the piece of the wall above the opening as spandrel or as pier? I am pretty sure that the depth to...
  3. Dzonni

    ETABS load transfer from vertical shell to frames

    Hello, everybody. I am wondering is it by any chance possible to transfer area load from vertical shell element to line load on frames? I know that this is possible for horizontal shells, say, if you assign a 1-way membrane, which will transfer the loads onto the adjoining beams, but I am...
  4. Dzonni

    Section forces

    Thanks!
  5. Dzonni

    Section forces

    Hello, everybody. I am conducting dynamic explicit analysis in order to find ultimate bending resistance of a channel section beam. I made a free body cut and i can clearly see the peak in the moment-time diagram, but that value is not what i have expected. I am wondering is there any other way...
  6. Dzonni

    How to obtain the ultimate bending moment

    Hello, everybody. I have conducted the lateral-torsional buckling analysis of a channel section beam. I have obtained the critical moment of lateral-torsional buckling and now i want to obtain the ultimate moment capacity, which, when the initial imperfections are included, should be less then...
  7. Dzonni

    How do i know how many buckling modes should i introduce as imperfections in Riks?

    Hello. I am modeling a simply supported beam and, as a first step, i had buckling procedure where i found eigenvalues and buckling modes. I have introduced the first mode as an imperfection, but i get that the Load Proportionality Factor is greater than the eigenvalue for the same load...
  8. Dzonni

    Why is my LPF in Riks method greater than the critical load factor in Buckling analysis?

    I have conducted buckling analysis in order to obtain the critical load and the initial imperfection shape for the next step, which is Static, Riks. After the analysis, as a result i get that the Load Proportionality Factor shows that the maximum load is greater than critical load from buckling...
  9. Dzonni

    Obtaining ultimate load using Riks method

    Thank you for your answer, StefCon. I am wondering what if i assume the arc length wrong? For example, i did a buckling analysis, got the critical load factor, imported the imperfection into the next model, proceeded with Riks method (i have assumed arc length 1), but i get the LPF which is...
  10. Dzonni

    Obtaining ultimate load using Riks method

    Hello, everybody. I am using the Riks method in order to obtain the bending moment resistance of a beam. My material is aluminium, modeled as a continuous stress-strain curve (elastic and plastic properties). If i set a load value which is large enough, do i get a proportionality factor after...
  11. Dzonni

    ABAQUS - beam bending moment capacity

    Hello, everybody. I would like to conduct beam analysis in order to find the bending carrying capacity. I have introduced the first mode of buckling analysis (lateral torsional buckling) as an initial imperfection and now i need to proceed with the static analysis. My problems are: 1) Which load...
  12. Dzonni

    Abaqus - line load on channel beam applied outside of a beam (in shear center)

    I understand what you are saying, but you don't understand me. Thanks for your help, anyway.
  13. Dzonni

    Abaqus - line load on channel beam applied outside of a beam (in shear center)

    I am not saying that it's stiffer, i am saying that it is a stiffener. Basically, i need that part only to apply load on, not to contribute to the area and moment of inertia of the entire cross section. So, if i put minimal thickness (number close to zero) or if i model that part with small...
  14. Dzonni

    Abaqus - line load on channel beam applied outside of a beam (in shear center)

    Thank you for your answer. I will try that, but i am interested in your opinion regarding this: if i make such a model with load applied on a thin part made of solids, do i have to reduce the modulus of elasticity for that part (because i don't want it to act as a stiffener)? Also, if i connect...
  15. Dzonni

    Abaqus - line load on channel beam applied outside of a beam (in shear center)

    Hello, everybody. I'm having a problem regarding the application of a line load beyond the contours of a channel tube made out of shell elements. I am trying to perform lateral torsional buckling analysis and the load needs to act in shear center. Does anybody have a solution for this?

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