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  1. dada23

    Metal sheeting modelling in Sap2000

    Hi all How should I model metal sheeting roof in SAP2000? as shell elements? Please find attached an example of a simple portal frame model as well as the different options for area sections for your reference...
  2. dada23

    Diaphragm for automated wind load

    No problem :D Thank you very much for your input on my issue. Take care
  3. dada23

    Diaphragm for automated wind load

    https://files.engineering.com/getfile.aspx?folder=062f6168-6306-4248-b57b-80f31c349827&file=Capture.JPG Could you confirm if the whole structure should be selected for diaphragm or only the roof objects? Because previously I selected all the nodes, elements and objects (included that of the...
  4. dada23

    Diaphragm for automated wind load

    MSUK90,the structure deflects perfectly under dead load. However, when it comes to the wind load case, the structure does not deform and I believe that it is due to the use of diaphragm parameters to apply wind load automatically. maybe something is not right there, and you will see from the...
  5. dada23

    Diaphragm for automated wind load

    @MUSk90 Please refer to the result test sheet below https://files.engineering.com/getfile.aspx?folder=08d3f619-3510-476f-8777-4cb4b900a3af&file=Trial_model.LOG
  6. dada23

    Diaphragm for automated wind load

    Thank for your reply, please find attached .s2k file as requested https://files.engineering.com/getfile.aspx?folder=c4b21151-4dcd-4e2a-abec-f3610c5445d0&file=Trial_model.s2k I look forward to hearing from you...
  7. dada23

    Diaphragm for automated wind load calculation

    I have encountered an issue on the portal frame model on SAP2000 when I use diaphragm to compute the wind load automatically in different wind directions. The error is as below when run the analysis, stating that numerical problems unencountered during equation assembly. I have also attached the...
  8. dada23

    Diaphragm for automated wind load

    I have encountered an issue on the portal frame model on SAP2000 when I use diaphragm to compute the wind load automatically in different wind directions. The error is as below when run the analysis, stating that numerical problems unencountered during equation assembly. I have also attached the...
  9. dada23

    Non-composite I beam section

    Thank you for the information. Actually i use shell elements to represent the members, including the I section beam and i offset the I beam, according to the geometry of the deck. So, i just need to make the mutual nodes of the concrete and steel vertically restained.
  10. dada23

    Non-composite I beam section

    Hey guys, i currently design a bridge deck with a non-composite I beam section (reinforced concrete slab rested on two steel beams with no fixed attachment)for simplcity using FEM. What will be the restraint of the connection between concrete and the top flange of steel if the deck is a...
  11. dada23

    grillage analysis of a composite beam of a bridge

    Thank you for your response. I have found something on the grillage analysis http://www.steelconstruction.info/Modelling_and_analysis_of_beam_bridges. i need to define the modulus of elasticity and shear modulus of the longitudinal elements in FEM, so i need to find a way to calculate these...
  12. dada23

    grillage analysis of a composite beam of a bridge

    Hey guys, I would like to ask you how to model a concrete slab on two steel girders for a bridge in FEM software uaing grillage method ( i have GSA Oasys as software)? How to determine the section properties ( E, I, G and J) of the longitudinal elements representing the slabs and the steel...
  13. dada23

    grillage analysis of a composite beam of a bridge

    Hey guys, I would like to ask you how to model a concrete slab on two steel girders for a bridge in FEM software uaing grillage method ( i have GSA Oasys as software)? How to determine the section properties ( E, I, G and J) of the longitudinal elements representing the slabs and the steel...

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