×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

FRP modelling in STAAD

FRP modelling in STAAD

FRP modelling in STAAD

(OP)
Hi Everyone,
Can anybody share how to model the FRP strengthening systems in STAAD.Pro v8i. I am planning on analyzing a tubular pile structure which has been strengthened using FRP wraps. I know all the material properties of the fiber wraps but can anybody guide me how to properly model them in STAAD. Also in case of fiber wrap systems, adhesives play a very major role as the whole strength depends on adhesive's capacity so how to take care of that during modelling?

RE: FRP modelling in STAAD

I don't think you can rely on your analysis to tell you when these members are failing. Rather you would use your analysis to determine what loading the various members experience. Then run some hand calcs (or get the FRP manufacturer to run them) to determine what the capacity of the members is.

RE: FRP modelling in STAAD

(OP)
Actually my purpose here is NOT to determine whether members are failing or not, but I want to know how to effectively model the FRP system in STAAD so that it shows the actual behavior (or atleast near to it) after the structure is strengthened using FRP. Even if I give to manufacturer they will again come back and say that this FRP system can take so and so loads but HOW effectively it strengthens my structure. Would appreciate if you can refer something related to modelling part and I may also try the analysis using ANSYS too.

RE: FRP modelling in STAAD

On the analysis side, we're really just talking about how the FRP system affects the elastic stiffness of the members, right?

To me, that should be a simple calculation transformed section properties to come up with equivalent cross sectional properties for the multi-material members.

Acombined = A1 + nA2, where n = ratio between the young's modulus of the two materials. Same basic idea with moment of inertia....

RE: FRP modelling in STAAD

(OP)
Thanks JoshPlum for your valuable input. I was actually planning on modelling the structure itself right way in STAAD. Hopefully it will go well. Actually for tubular members I think hoop stresses will also come into play and for modelling part I'm bit nervous about the Joints. Doing the proper wrapping of FRP plates around joints is really the tricky part.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources