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  1. cbat

    Counterweight and Cable Model with singular stiffness matrix issues

    Hi guys, im using strand7 non linear transient analysis to examine the effect of a dynamic force on a counterweight. This countweight is suspended from a beam that is being impacted. I have modelled the cables using beam elements and selecting the beam element to act as a cable. The...
  2. cbat

    Strand7 Time delay of multiple forces

    Thats a great help from all, thank you! I'll try this out tomorrow.
  3. cbat

    Strand7 Time delay of multiple forces

    I'm trying simulate 6 forces of equal magnitude impacting a row of consectuve beams, each 1 second apart (ie like a truck impacting cross beams along the length of a bridge). I am restricted to using Strand 7, is it possible to individually delay each force in a dynamic analysis? Or is there a...
  4. cbat

    Strand 7 help Modelling a vehicle impact with a bridge

    Thanks for your concern, if it was a case of any real lift relevance I would agree with you. Fortunately though, it's actually just a research project with no definative impact on anyone. Hence me out of my depth and looking for a few basic pointers. If your willing to help that would be great...
  5. cbat

    Strand 7 help Modelling a vehicle impact with a bridge

    Hi Doug, thanks for the reply. Correct you are, I'm not familiar with FEA. I have about 4 weeks to finalise my model. Thanks for the suggestions above, I did a bit of research into both and it will probably suit me to run with option 1). I will use the equivalent static load, as I have a...
  6. cbat

    Strand 7 help Modelling a vehicle impact with a bridge

    Hi guys, My current project involves modelling an excavator arm impacting a series of cross-beams on a steel bridge. I have little to no experience in Strand 7 and am looking for a few pointers on how to go about the model! If anyone has some tips to direct me along that would be fantastic. So...

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