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  1. Zouatine

    SDOF in SAP2000

    Thank you for your reply ATSE, Would you please provide me the reference from YouTube? Thank you,
  2. Zouatine

    SDOF in SAP2000

    Dear All, Kindly, I wanted to perform several Non-Linear Time History Analyses in SAP2000 software on a single degree of freedom system by changing several parameters such as Time period, damping, and hysteresis curve parameters... Is there any way to perform these analyses without running...
  3. Zouatine

    Shear Wall Design

    Dear MotorCity, Yes the spring will be acting in tension when the lateral load will applied while the other one will in compression, Nevertheless, the two springs are already designed ,I'm left with reinforcement in the shear wall, I'm confused about the section that should resist the tension...
  4. Zouatine

    Shear Wall Design

    Dear Mr Greenalleycat, Thank you for your kind reply, the spring is called a ring spring , this device is installed in the structure to provide a self-centering when earthquake load will occur, this spring element will dissipate 60 % of the applied load (Earthquake Energy) through the friction...
  5. Zouatine

    Shear Wall Design

    Respected All, Hope you are doing well, I wanted to design a shear wall which has a springs at its base , However for the sake of the simplicity, I just extract the highest force which may the springs apply on the shear wall , the next figure shows the FBD of the shear wall : Where...
  6. Zouatine

    Shear Wall design in Sap2000

    Thank you for your kind reply, is there any possible way to change the min reinf in sap2000 for the column design ?
  7. Zouatine

    Shear Wall design in Sap2000

    Respected All, Hope you are doing well, Kindly, I'm trying to design a shear wall in sap2000 to resist the earthquake load. As you may known that sap2000 doesn't have the option to design the shear wall so for this reason I'm using a wider column approach, where instead of modelling the...
  8. Zouatine

    Strain Energy Method

    Thank you Sir for your reply, Would you please elaborate more in your answer because I'm new in this topic. your help is much appreciated . Thank you looking forward for your reply.
  9. Zouatine

    Strain Energy Method

    Dear All, Respected All hope you are doing well, Kindly , I'm trying to understand how to derive the shape functions of Timoshenko beam using the concept of Virtual Work method. The theory is done on 3D beam element (Fig 1) . Fig 1 Considering all...
  10. Zouatine

    How to model a Special Support in SAP2000 ( Uplifting) ?

    Dear all, I'm doing a linear static analysis of a 2d steel frame structure in order to get a displacement of the top joints due to lateral loads. I want to model the uplifting of the column in this case to only allow the column to go up and not down. What I meant is that the support will only...
  11. Zouatine

    Parametric Analysis

    Dear All, Hope you are doing well, Kindly, I want to do a parametric analysis of SDOF under a harmonic forcing in order to get a force-displacement curve, would you please suggest me any software or reference about how to do that . thank you,
  12. Zouatine

    Damping Coefficient

    Dear all, Hope you are in the best condition of health, I'm trying to find the damping coefficient (''C'') of an element of energy dissipation (Shear Fuses) with the next hysteresis loops and I do have also the back-bone curve would you please help with that, Thank you your help is much...
  13. Zouatine

    Hinges

    Dear All, Hope you are doing well, I'm trying to model a type of energy dissipation element figure 01 ``Butterfly fuse ``, after a lot of research about the features of this device and how does it work, I could find the formulas of the strength and the stiffness for this device from the...
  14. Zouatine

    Modelling the shear fuses ( Energy Dissipation Element)

    Dear Mr Retrograde , Thank you for your reply, I guess the solution that you suggest is perfect my mine issue now how to find the value of K and C, the stiffness and Coefficient of Damping respectively, the only information that I have is energy dissipation ratio β= 0.25. Could you please...
  15. Zouatine

    Modelling the shear fuses ( Energy Dissipation Element)

    Dear All, Hope you are all doing good, I'm trying to model shear fuses (Picture 01) as an element of energy dissipation in my model ( they are added in order to dissipate the energy coming from the earthquake), however, I'm not able to find any explanation about how to model this element in...
  16. Zouatine

    Eigen-Vectors of the mode shapes

    Thank you for replying to me back Mr wcfrobert, As far as I understand from your comment that in order to get the eigenvector (the one that we derive from the eigenvalue problem), I have to normalize the displacement vector, as you mentioned {1; 0.68; 0.38; 0.13} so this one is the eigenvector...
  17. Zouatine

    Eigen-Vectors of the mode shapes

    Dear Mr wcfrobert, Thank you for your reply, sorry if I didn't clarify in my previous post, actually everything is exactly as you said, I mean I do have a symmetrical building, what I'm looking for is an eigenvector with four components each one belongs to each floor, however, when I was...
  18. Zouatine

    Eigen-Vectors of the mode shapes

    Dear Fellow friends, I'm doing a Response Spectrum Analysis for steel Structure (CBF Frame)in Etabs software, however, I'm trying to find the eigenvector noted as ''v'' of the first mode shape for the structure the one that we derive from the formula (K-w^2.M).v=0, I'm stuck in this part I...
  19. Zouatine

    Exporting from Etabs to SAP 2000 error

    Dear All, I'm trying to export my model from Etabs 17 TO Sap 2000 v21 but some issues appear while I'm doing that would you please help me with that.
  20. Zouatine

    post-tensioning bars

    Dear Mr r13, Thank you for your help, I went through all the research papers in order to understand the behavior of the system as well as the research paper that you mentioned , Now i got stuck in modelling different part of the structure element, like PT bars and energy dissipation element...

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