Elastic Constants
Elastic Constants are used to determine the deformation produced by stress. They are used to obtain relationship between stress and strain. There are basically 4 types of elastic constants which we use, namely:
- Bulk modulus (K)
- Young’s modulus (E)
- Shear modulus (G)
- Poisson’s ratio (µ)
Bulk Modulus of Elasticity is explained as having the ability of a material to resist deformation in terms of change in volume at the time of subject compression under pressure.
Young’s Modulus of Elasticity is based on the elastic constant which is defined as the proportionality constant between stress and strain.
Modulus of rigidity that is also known as Shear Modulus is defined as the measure of elastic shear stiffness of a material. This property depends on the material of the member which means the more elastic the member, the higher the modulus of rigidity.
Poisson’s ratio is defined as the ratio of the change in width per unit width of a material in order to the change in its length per unit length which will be given as a result of strain.
Relation Between Elastic Constants
The relationship between these constants can be known by the given expression:
1/K − 3/G = 9/E
Where,
- K is the Bulk Modulus
- G is the shear modulus
- E is the Young’s modulus.
Modulus of Elasticity
Modulus of Elasticity or Elastic Modulus is the measurement of resistance offered by a material against the deformation force acting on it. Modulus of Elasticity is also called Young’s Modulus. It is given as the ratio of Stress to Strain. The unit of elastic modulus is megapascal or gigapascal
Modulus of Elasticity is one of the most important concepts of material science and engineering. It is the property of material that measures stiffness to elastic deformation under stress. In this article, we will discuss about Modulus of Elasticity, including its definition, types, and fundamental concepts along with its various applications in day-to-day life.
Table of Content
- What is Modulus of Elasticity
- How to Calculate Modulus of Elasticity
- Modulus of Elasticity Formula
- Modulus of Elasticity of Different Materials
- Modulus of Elasticity vs Modulus of Rigidity