Modified Version of Hooke's law and Stress vs Strain Curve: Explained Details (Animation)

#Hooke'sLaw #AnimatedChemistry #Kineticschool
Modified version of Hooke's Law (Stress and Strain)
Chapters:
0:00 Kinetic school's intro
0:14 Modified Version of Hooke's Law
0:54 Stress
1:24 Strain
1:52 Young's Modulus
2:29 Stress-Strain Curve
5:13 Why is the Stress- Strain Curve important?

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Description:

Modified Version of Hooke's Law:
Modified Version of Hooke's Law states that:

"The stress (σ) induced in a material is directly proportional to the strain (ε) within its elastic limit.
So, σ ε
That means, σ = E ε

Stress:
Stress is defined as the force applied to the unit area to produce a change in the shape, volume, or length of a body.

Then, Stress = Force/Area
So, σ = F/A
Strain:


The strain is a measure of the deformation of a solid when stress is applied to it.
Strain = Change in length/Original length
Or, ε = ∆l/l

Young's modulus:
Young's modulus (also known as the elastic modulus) is a number that measures the resistance of a material to being elastically deformed.

Therefore, Young's modulus = Stress/Strain
Or, E = σ/ε


Stress-Strain Curve:

The stress-strain curve is a graph that shows the change in stress as strain increases.

In the Stress-strain curve,

“A” is known as the "limit of proportionality".
“B” is known as the "Elastic limit".
“C” is known as the "Upper yield point".
“D” is called the "lower yield point".
“E” is known as the "Ultimate stress".
“F” is "Breaking stress".