If the plane strain deformation is occurring parallel to the XY plane, then strain in the z-direction is equal to zero. The stress in the z-direction will be equal to _______________(Given that stress in x and y-direction is σx andσy respectively).

If the plane strain deformation is occurring parallel to the XY plane

1.	If the plane strain deformation is occurring parallel to the XY plane, then strain in the z-direction is equal to zero. The stress in the z-direction will be equal to _______________(Given that stress in x and y-direction is σx andσy respectively).
A.	σx+σy
B.	(σx+σy)/2
C.	(σx+σy)/3
D.	0
Answer» C. (σx+σy)/3