- #1
lushforest
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Hi everyone, I was looking up Mohr's circle on planar stress and stress/strain relation and all that
and I read a context on principal stress. It said that if there is both normal (tensile) stress and shear stress in a given area, then the principal stress at that location is greater than the normal stress.
Well, I was just wondering what really is the importance of principal stress in real world applications...
does principal stress mean the MAXIMUM stress an object can be under in a given area dA?
And when there is a principal stress then there is no shear stress, but I didn't get that either because how could there be no shear stress?
ref: http://wiki.answers.com/Q/What_are_called_principle_planes_and_principle_stress
and I read a context on principal stress. It said that if there is both normal (tensile) stress and shear stress in a given area, then the principal stress at that location is greater than the normal stress.
Well, I was just wondering what really is the importance of principal stress in real world applications...
does principal stress mean the MAXIMUM stress an object can be under in a given area dA?
And when there is a principal stress then there is no shear stress, but I didn't get that either because how could there be no shear stress?
ref: http://wiki.answers.com/Q/What_are_called_principle_planes_and_principle_stress