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The modulus of elasticity , E, relates tensile stress to tensile strain
The modulus of rigidity, G, relates shear stress to shear strain
The bulk modulus, K, relates compressive stress to volume strain
The three are related using u, poisson ratio of material, that varies generally from 0 to 0.5
E = 9K/ (1 + 3K/G)
G = E/2(1+u)
G = 3(1-2u)K/2(1+u)
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Can young modulus of elasticity equals modulus of rigidity?
For isotropic materials G = E/ (2(1+u) where u = poisson ratio
Briefly explain another method to determine modulus of rigidity?
By using tensile test.
What is modulus rigidity of nylon?
It will depend on the Nylon type; average is about 200,000 psi (1380 MPa)
Dimensional formula of modulus of rigidity?
y(young's modulus of rigidity)=stress/strain now strain is dimensionless hence y=stress y=M L-1 T-2
What is the types of modulus of elasticity?
1. Young's modulus of elasticity, E, also called elastic modulus in tension 2. Flexural modulus, usually the same as the elastic modulus for uniform isotropic materials 3. Shear modulus, also known as modulus of rigidity, G ; G = E/2/(1 + u) for isotropic materials, where u = poisson ratio 4. Dynamic modulus 5. Storage modulus 6. Bulk modulus The first three are most commonly used; the last three are for more specialized use
