×
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

Using Cohesive Elements to simulate traction seperation

Using Cohesive Elements to simulate traction seperation

Using Cohesive Elements to simulate traction seperation

(OP)
Hi,

i want to simulate a crack within an aluminium-bar. i used cohesive elements in the way, that i divided the bar into three parts, where the middle part is the very thin cohesive element. in the section i used cohesive->traction seperation->initial thickness->use analysis default. in the material section i used elastic type traction with the values for e-module an the two g-modules, for the damage criterion i used maxs damage with the values of predicted failure and for the damage evolution i used the fracture energy. in the first step i put pressure load on the front side with a ramped amplitude an then a second step for the wave to develop through the material. for the connection between the cohesive elements and the surrounding material i used tie constraints, where the slave is always the cohesive element. i meshed the surrounding material normal, and for the cohesive element, i used cohesive, btw both with the same size. the problem, which occured, is that the wave doesn't go trough the cohesive element an thus there is no effect to see. can you help me. i guess the problem is with the tie constraint or the mesh!

thanks

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