Page 74 - Fundamental of Engineering Design
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Deformation under direct axial loading
Strain
◦ Strain also known as deformation; in general term a strain is a
geometrical quantity that measures the deformation of a body.
◦ Whenever a single force acts on a body, it undergoes some
deformation. This deformation per unit length is known as strain.
Mathematically strain may be defined as the deformation per
unit length.
Types of strain
1. Normal strain: characterizes dimensional changes
2. Shear strain: describe as distortion ( changes in angles)
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