×
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

How plastic strain is calculated in Abaqus Static with nonlinear for beam?

How plastic strain is calculated in Abaqus Static with nonlinear for beam?

How plastic strain is calculated in Abaqus Static with nonlinear for beam?

(OP)
Hello Abaqus users,

I am trying to learn how Abaqus calculates plastic strain when cantilever beam is subjected to transverse load at the tip. For axial load it can be predicted from displacement but for transverse load due to bending of beam due to point load at tip it seems different. My model is like this a cantilever beam of length 10 m which is line model, rectangular cross section of width 1 metre and height 0.5 metre and E = 210 GPa , poisson's ratio = 0.33, yield stress is 210 Mpa where plastic strain is 0 but as stress increase plastic strain increase too, its bilinear stress strain graph. I am using Abaqus static, general with nonlinear.

I also tried this but not even close to accuracy
εp = y/Rep   - y/Re                                           (1)

  where Rep = the elasto-plastic radius of curvature and  Re = elastic radius of curvature and y = vertical distance of point from the neutral axis.
1/Rep = w''(x) =   Me1.5*sgn(M)/EI/[ 3Me-2|M| ]0.5                  

while    1/Re =  Me/EI                                                     

and M = bending moment at the given point > Me

  Me = limiting elastic bending moment or yield bending moment.


Does it depends on geometry of bending or there is actually formula for calculating plastic strain. Please help me with this I am trying for few days to get the answers.

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