×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Contact US

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!

*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

How do I model aircraft cable in RISA 3D?

How do I model aircraft cable in RISA 3D?

How do I model aircraft cable in RISA 3D?

(OP)
Has anybody modeled aircraft cable in RISA 3D?  What should I use for Allowable Yield Stress, Fy?  Would it be the breaking strength divided by the area?  Seems that would be the Fu tensile stress.

RE: How do I model aircraft cable in RISA 3D?

I think that more than a RISA question it is a "technical" question. So the cable will have some intent and more or less defined setup, and a someway defined envelope of loading hypotheses. So how you model such something will depend upon all these things. In some cases the design of cable structures involves iterative steps; this also can be used within RISA even for large deformations (geometrical nonlinearities) that of course are not the intent of a program like RISA, but you can approach it by such iterative procedures. Respect a single straight cable you have a tension-only element in RISA-3D; this will help you to not get some problems in analysis when using cables and a number of hypothesis. Yet for a special hypothesis that ensures tension you can model the cable, use P-Delta and have a nice approximation (for problems that not require the iterative process referred above) of the standing stress for the hypothesis. That you may want to compare it to a fraction of Fu or to Fy or whatever will depend of your technical intent. If you throw your cable-like element to RISA under a code, RISA will try to check it as per the code.

RE: How do I model aircraft cable in RISA 3D?

(OP)
Thanks ishvaaaq.

RE: How do I model aircraft cable in RISA 3D?

The USS Steel Wire Rope publication provides some values for cables.  They provide breaking strength and the E for structural steel.   There are also a number of design recommendations.

RE: How do I model aircraft cable in RISA 3D?

Correction:

The USS Steel Wire Rope publication provides some values for cables.  They provide breaking strength and the E for the cable.  Typically the E for cable is less than that of structural steel.   There are also a number of design recommendations.

 

RE: How do I model aircraft cable in RISA 3D?

(OP)
Thanks Oldrunner.  This lead me to a similar post with the attached manual I believe you are speaking of.  Here's the thread to find the attachment.

thread507-239603: Elongation of Wire Rope

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! Already a Member? Login



News


Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close