×
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

analysing a 3d composite vessel

analysing a 3d composite vessel

analysing a 3d composite vessel

(OP)
I am analysing a 3d composite(carbon/epoxy) pressure vessel with ansys using shell99 elements and i want to obtain tsai-wu failure criterian.I have only these properties:(1,2 or x,y are in plane 3 or z is out of plane)
MODULUS: E1,E2,G12
STRENGHT: Xt,Xc,Yt,Yc,S
POISON RATIO:NU12
but there are more properties required by ansys,if i leave other blank ansys shows an error,until i use a value for modulus E3,and strenghts Zt,Zc,now ansys will solve the problem.I think this is because The Tsai-Wu failure criteria used in ansys are 3-D versions of the failure criterion.plus these there are other properties which leaving them blank does not make an error in ansys but this may influnce on the results.these properties are:
G23,G13,NU23,NU13,Zt,Zc,Syz,Sxz.now what should i do

Cheers

alleak

RE: analysing a 3d composite vessel

Why the 3D analysis?  You should be able to reduce this to a plane stress application and use the failure criteria directly.  

Numerous texts on composite mechanics have typical examples.  Check out Gibson, Jones, Tai, or Whitney.

Regards,
Qshake

Eng-Tips Forums:Real Solutions for Real Problems Really Quick.

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