×
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

Riks method-- question

Riks method-- question

Riks method-- question

(OP)
I have question about the load proportionality factor in the Riks method. I know that, it is used to tell Abaqus when to terminate the step.

Suppose i want to apply the full load which was applied in the load module, so the load proportionality factor should be 1??

I have another question about the minimum and maximum of the Arc length. what are the optimum input for them?

Thanks

RE: Riks method-- question

(OP)
Any ideas?

RE: Riks method-- question

Hi,
First off, I'm far from an expert in Riks analysis.

If you apply the full load then the LPF should be 1 when the entire load is applied. If you apply the unit load of 1 (which I usually do) then the LPF would be equal to the load you are trying to apply.

Arc length is like (in layman's terms) your time increment. A high maximum may allow your run to be quicker but I've heard that the maximum should be limited for it to accurately find the maximum LPF. I do not have any experience of this myself, I used 3 as maximum when I applied unit load of 1.

Can anyone confirm?

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