PRINCIPAL PLANES AND PRINCIPAL STRESSES

We were discussing the concept of stress and strain and also we have discussed the different types of stress and also different types of strain in our previous posts. 

Now we are going further to start our discussion to understand the principal planes and principal stresses, in subject of strength of material, with the help of this post.

Principal planes

A plane which is subjected with only normal stresses i.e. tensile stresses or compressive stresses will be termed as principal planes. Principal planes will not be subjected with shear stress i.e. there will be zero shear stress or tangential stress.

A plane which is subjected with maximum normal stress will be termed as major principal plane.

A plane which is subjected with minimum normal stress will be termed as minor principal plane.

Principal stress

Normal stresses acting on a principal plane will be termed as principal stresses.

The maximum value of normal stress acting on principal plane will be termed as major principal stress.

The minimum value of normal stress acting on principal plane will be termed as minor principal stress.

Do you have suggestions? Please write in comment box.

We will now discuss the basic concepts of thin and thick cylinders, in the category of strength of material, in our next post.

Reference:

Strength of material, By R. K. Bansal

Image Courtesy: Google

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