INTRODUCTION :
STRESS
When the body subjected to external load
there will be a deformation in order to resist that deformation there will be a
resistive force internally from the body that resistive force is known as
stress
Mathematically stress we will indicate with sigma
In general stress is defines as load/ area
That is stress = p/a
Where p = load
A = cross sectional
area
Strain :
When
a
body subjected to some external load there will be a deformation due to that
there will be a change in dimension that change in dimension to the orginal
dimension is known as strain
Strain can be occurred in
following types
Tensile strain (length)
Compressive strain (length)
Volumetric strain (volume)
Shear strain (shear stress)
As like strain there
types of stress tooooooo……………..
Those are
Tensile stress
Compressive stress
Volumetric stress
Shear stress
Tensile stress:
Two equally opposite
pushes are acting upon a body there will be a elongation in length that
elongation due to that known as tensile stress
Compressive stress:
Two equally opposite pull
forces are acting upon a body it produces change in dimension of a body known
as compressive stress
Volumetric stress
If two forces are acting
upon a body there will be a change in volume that change in volume is known as
volumetric stress
Shear stress
Two opposite and equal
forces are acting upon a body tangentially upon
a resistive force it causes shear off known as shear stress
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