×
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

models for sand

models for sand

models for sand

(OP)
how to model sands in nonlinear fashion? Linear-elastic models and elasto-plastic with Mohr-Coulomb failure seems to me less acurate in many cases. What is your point of view or experience?

RE: models for sand

Hi coopernik,

I think classical elasto-plastic model with strain softening behavior would be better, or other model introducing strain softening would also be ok. About the limit stress (failure) condition Mohr Coulomb or Druker Prager or Matsuoka Nakai will be ok.

regards,
sendy.

RE: models for sand

Critical-State based model is fine particulrly if your sand is under drained phenomena

RE: models for sand

I don't understand how one could model a sand (which is non-cohesive) non-linearly.  It seems the only variable is angularity.

RE: models for sand

Hi LCruiser,

You're right that angularity of particles is one of the variables that could lead to the non-linearity of displacement field of sand layer. Other variables are the void ratio, the current (stress) pressure, grain size, and the constraint deformation of particle itself.

regards,
Sendy.

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