e g k relation

1. STRENGTH OF
MATERIALS
MODULE :- 01
TOPIC :- RELATION BETWEEN ELASTIC CONSTANTS(E,G & K)
BY:-
1. MR.YOGENDRA KUMAR
2. MR.BHUPENDRA KUMAR SARASWAT
3. MR.MAHENDRA KUMAR SAHANI
4. MR.AKASHDEEP YADAV
BE READY FOR
DERIVATION OF
E, G, AND K

2. RELATION BETWEEN DEFFERENT ELASTIC CONSTANTS
1. YOUNG'S MODULUS(E):- Its also known as
hooke's law. according to this law the stress is
directly proportional to strain upto proportional
limit.
2. MODULUS OF RIGIDITY(G):- It is the coefficient of
elasticity for a shearing force.It is defined as the ratio
of the shear stress(q) to the shear strain(ф).
shear modulus


q
G
3. BULK MODULUS(K):- It is the ratio between direct
stress to the volumetric strain of a material up to
elastic limit.
ve
p
K 
Note:-Unit of all elastic constant will be same
N/mm2 , MPa. GPa. Etc.

3. 1. Relation between E and K

4. 1. Relation between E and K

5. 2. Relation between E and G

6. 2. Relation between E and G

7. 3. Relation between E,G & K