ddlmodes
Petroleum
- May 2, 2012
- 5
Below is my question:
A steel of 200Mpa yield, when loaded to:
Case #1)
Stress1=stress2=stress3=400Mpa (compress)
Strain1=strain2=strain3
= 0.1% -0.3*0.1% -0.3*0.1% (Elastic strain)
+ A% -0.5*A% -0.5*A% (Plastic strain = no flow = 0)
= 0.04%
Or 0.08%? (After yield, continue to deform elastically & infinitely)
Under uniform compression, steel will not yield/fail when loaded past yield value.
But the resulting strain is a bit confusing (I post above Case #1 first).
Please enlighten me.
Thanks in advance.
A steel of 200Mpa yield, when loaded to:
Case #1)
Stress1=stress2=stress3=400Mpa (compress)
Strain1=strain2=strain3
= 0.1% -0.3*0.1% -0.3*0.1% (Elastic strain)
+ A% -0.5*A% -0.5*A% (Plastic strain = no flow = 0)
= 0.04%
Or 0.08%? (After yield, continue to deform elastically & infinitely)
Under uniform compression, steel will not yield/fail when loaded past yield value.
But the resulting strain is a bit confusing (I post above Case #1 first).
Please enlighten me.
Thanks in advance.
