Question
Define stress and strain. What are their different types?
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Answer
i) Stress:
- The internal restoring force per unit area of a both is called stress.
Stress $=\frac{\text { deforming force }}{\text { area }}=\frac{|\vec{F}|}{ A }$
where $\vec{F}$ is internal restoring force or external applied deforming force.- Types of stress:
- Longitudinal stress,
- Volume stress,
- Shearing stress.
ii. Strain:
- Strain is defined as the ratio of change in dimensions of the body to its original dimensions.
Strain $=\frac{\text { change in dimensions }}{\text { original dimensions }}$ - Types of strain:
- Longitudinal strain,
- Volume strain,
- Shearing strain.
- Types of stress:
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