Unit of Young’s modulus of elasticity force is newton per square meter (N/m^2), kilogram (force) per square centimeter (kg/cm^2) or pascal.
Unit of Young’s modulus of elasticity force is newton per square meter (N/m^2), kilogram (force) per square centimeter (kg/cm^2) or pascal.
Most commonly used unit of Young’s modulus is pascal, which is defined as force of 1N that is exerted on unit area.
However, for most engineering problems it is fairly small unit, so it is convenient to work with multiples of the pascal: the GPa, and the MPa.
- 1 MPa 106 N/m2
- 1 GPa 109 N/m2
In case of tensional stress of a uniform bar (stress-strain curve), the Hooke’s law describes behaviour of a bar in the elastic region. In this region, the elongation of the bar is directly proportional to the tensile force and the length of the bar and inversely proportional to the cross-sectional area and the modulus of elasticity.
References:
Materials Science:
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- U.S. Department of Energy, Material Science. DOE Fundamentals Handbook, Volume 2 and 2. January 1993.
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