×
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

Dead loads in Riks step

Dead loads in Riks step

Dead loads in Riks step

(OP)
Hello all,

I have a question regarding dead loads in Riks step. According to Abaqus theory manual any loads that exist at the beginning of the step and are not redefined are treated as "dead" loads with constant magnitude. . A load whose magnitude is defined in the Riks step is referred to as a "reference" load. All prescribed loads are ramped from the initial (dead load) value to the reference values specified.
The loading during a Riks step is always proportional. The current load magnitude, P_total, is defined by

Ptot = Po + λ(Pref + Po),

where Po is the "dead load," Pref is the reference load vector, and λ is the "load proportionality factor."

As I can see from this formula, Po is not treated as a dead load with constant magnitude since it's multiplied with the load proportionality factor λ. Is there something I have missunderstood here?  

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