Table of contents | |
Introduction | |
What is Elasticity? | |
What is Elastic Stress? | |
What is Strain? | |
Elastic Hysteresis | |
Modulus of Elasticity |
Elasticity is a fundamental property of materials that describes their ability to return to their original shape and size after undergoing deformation due to applied forces. Understanding elasticity is crucial in material science and engineering because it helps us predict how materials behave under various loads and stresses. Here’s a detailed overview of the key concepts related to elasticity:
Elasticity is the capacity of a material to undergo deformation when subjected to external forces and then return to its original shape and size once these forces are removed. This property is essential for analyzing how materials respond to different stresses and loads.
Elastic stress refers to the internal resistance a material develops when subjected to an external force. This stress causes temporary deformation, but the material returns to its original shape when the force is removed.
Strain measures the deformation of a material in response to an applied force. It represents the relative change in shape or size of the material compared to its original dimensions and is dimensionless.
Elastic hysteresis refers to the energy loss observed in materials during cyclic loading and unloading, even when the material remains within its elastic deformation range. This phenomenon can be seen in materials like rubber and certain metals, where the loading and unloading paths differ, leading to energy dissipation.
Hooke’s Law describes the linear relationship between the stress applied to a material and the resulting strain, as long as the material remains in its elastic range.
Formula: σ = E⋅∈
Where σ is the stress, E is Young’s modulus, and ∈ is the strain.
The modulus of elasticity, or Young’s modulus (E), measures a material’s stiffness by quantifying how much it deforms in response to applied stress.
Formula: E = ∈/σ
Where E is Young’s modulus, σ is the stress, and ∈ is the strain.
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1. What is Elasticity in materials science? |
2. What is the difference between Elastic Stress and Strain? |
3. What is Elastic Hysteresis in materials science? |
4. What is the Modulus of Elasticity? |
5. How is Elasticity important in the field of SSC CGL? |
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