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1. DONE BY
U.DIVYA SWETHA

2. ABSTRACT
• For discussing about shear stress and
• shear stress we use a force that acts
parallel to the plane under consideration
wheare as is generated
due to bending of the member.
• i.e consideration a force that acts
perpendicular to the plane under
consideration.

3. Shear stress: It define as force tending to cause
deformation of a material by slippage along a planes
parallel to the imposed stress.The resultant shear is of great
importance in nature,being intimately related to the downslope
movement of earth material.

4. Shear stress formula & dimension;

5. TYPES OF SHEAR STRESS
PURE:
Pure shear stress is related to pure shear strain, denoted γ, by the following
equation:
Ʈ=γG
where G is the shear modulus and of the isotropic material,
given by G =
𝐸
2(1+𝑣)
Here E is and v
Beam shear;
Beam shear is defined as the internal shear stress of a beam caused by the
shear force applied to the beam.
Ʈ=
𝑓𝑄
𝐼𝑏
where
f=total shear force at the location in question
Q=statical moment of area.
b=thicheckness
I=moment of inertia of the entire cross-section area;

6. • semi-monocoque shear;
• shear stresses with a semi-monocoque structure
may be calculated by idealizing the cross-section of
the structure into a set strings and webs dividing
the shear flow by the thickness of a given portion of
the semi-monocoque structure yields the shear
stress. Thus the maxmimum shear stress will
occure either in the web of maximum shear flow or
minimum thickness.
• Impact shear;
• The maxmimum shear stress created in a solid
round bar subject to impact is given as a equation.
Ʈ= 2𝑈𝐺/𝑉
, U=change in kinetic energy;
• G=shear modulus
• v=volume of rod

7. • Bending stress;
Bending stress occurs when operating
industrial equipment and in concrete and metallic structures
when they are subjected to a tensile load.
Bending stress formula;
ϭ =
𝑀𝑦
𝐼

8. Types of Bending stresses;
They are mainly TWO types

9. Simple bending;
Bending will be called as simple bending when it occurs
because of beam self-load and external load.This type of
bending is also as ordinary bending and this type of
bending result both shear stress and normal stress in the
beam.
Simple bending equation= E/R=M/I=F/Y.