×
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

Stress Von Mises
2

Stress Von Mises

Stress Von Mises

(OP)
Hello all,

Please bear with me as I am very new to this.  I have carried out an analysis on a bracket made from 2016-t6. The displacement results have proven quite accurate against a physical destruction test i have carried out.
However I have a limited knowledge of interpreting the results in the Stress Von Mises analysis.

The model display red areas in the right places which indicate on the key  2.056e+02 and the units are N/mm^2.
But this is whare my knowledge falls down.

What does it mean??

I am applying a load of 19600N to the object. How does this result corelate? What does it mean???

Please be patient, I am trying (very trying).

Regards

CDC02254

RE: Stress Von Mises

2
If the Von Mises stress is greater than the Yield Strength of the material, there will theoretically be a permanent deformation in the part. If the VM Stress is greater than the Ultimate Tensile Strength, the material will theoretically break.

Your stress is 2.056e+2 N/mm^2(or 205.6 MPa)

Properties for 2024-T351 Aluminum are: (I don't know about 2016, so please adjust for that)

Ultimate Tensile Strength 441 MPa
Yield Strength 290 MPa  

Therefore your sample would exceed the yield strength based on using VM stress. The metal will never return to it's original state after the force is released. Repeated cycling would fatigue the material and eventually it would break. This is why you would want to design with some safety factor. e.g. A safety factor of 2 would mean you design such that your Von Mises never exceeds 290/2 MPa

~Jeff~

SolidWorks 2006 SP3.1 on WinXP SP2
Pentium(R)4 CPU 3.60GHz 1.00GB of RAM

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