×
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

RISA 3d beginner - Civil Engineering Student

RISA 3d beginner - Civil Engineering Student

RISA 3d beginner - Civil Engineering Student

(OP)
I'm beginning to work with RISA 3d and I'm having a problem when going to solve my problems, I'm getting all 0 values for my deflections and reactions and I can't find out why.

http://s143.photobucket.com/user/colttcoltt/media/...

The grid is 8@5 in both direcions

This is what I have for Load Combinations, can anyone help me with why I'm no getting any values

http://s143.photobucket.com/user/colttcoltt/media/...

RE: RISA 3d beginner - Civil Engineering Student

It looks like every one of your nodes has a support so therefore there will be no deflection at any joint.
You need to edit your boundary conditions to only provide support where there actually will be support.

Check out Eng-Tips Forum's Policies here:
FAQ731-376: Eng-Tips.com Forum Policies

RE: RISA 3d beginner - Civil Engineering Student

JAE is correct, not sure why you have supports everywhere. Your screenshot of the load combinations also shows no load factor input. Maybe you added that later, but not having a factor of 1 there would result in 0 reactions.

You should go through RISA's tutorials step-by-step. They have great examples and documentation.

You might also try asking some of your fellow students. This site is really intended for practicing professionals.

RE: RISA 3d beginner - Civil Engineering Student

I also agree with JAE here.

Mike McCann, PE, SE (WA)


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