High SIF in plane stress

ramdas chennamsetti's picture

Hi all!!!

I have a very basic question in Fracture Mechanics. The question is as following.

"Stree Intensity Factor (SIF) is more in plane stress problems (plasic zone size is big) than in plane strain problems (plasic zone size is small). How do we explain this, without refering or invoking energy conecpt?"

I request to give some thoughtful explanation.

With regards,

- Ramdas

Xiao-Yan Gong's picture

How about lack of constraint?

Xiao-Yan Gong, PhD
Medical Implant Mechanics LLC
26895 Aliso Creek Road, Suite #B716
Aliso Viejo, CA 92656