Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations MintJulep on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

true stress strain

Status
Not open for further replies.

blckwtr

Mechanical
Joined
Oct 30, 2006
Messages
204
Location
NO
In order to do plasticity analysis on metals, you need to put in the correct data in abaqus. So far, I have an example from Simuleon website and Dowling (Mechanical behaviour of materials, 4th edition). I find the very high values very strange, can someone explain? See attached file...

I am unsure of the yield point, as I think this should be at 0,02% offset, but that is from the calculated E module, right?
 
 https://files.engineering.com/getfile.aspx?folder=a2847a08-f4b0-44d8-91b5-f60a859f9be6&file=Conversion_Engineering_Stress-Strain_to_True_Stress-Strain.xlsx
i think you used percentages for your strain values.

if you divide your strain values by 100 things should make more sense.
 
there's also quite detailed explanation of how to do this in the "Getting Started with Abaqus Guides"

Section 10.2 in both the Interactive and Keyword Editions - Plasticity in Ductile Materials


 
Dave442: Thanks, that solved it, of coourse...
 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top