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Is Young's modulus of elasticity a measure of ductility?

Modulus of Elasticity is not a direct relationship to ductility. Ductility is the ability of a material to plastically deform before rupture. Your description and equations are not relating ductility ...
Robert Holgate's user avatar
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Why is the strain tensor of a rod under uniform torsion the same everywhere along the rod?

Axial $z$-coordinate is homogeneous (and thus the solution doesn't depend on $z$) for: slender beams, if one excludes the region close to the extreme sections of the beam; with no distributed loads ...
basics's user avatar
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"Friction at a contact point", rubber-band experiment

Yes, there will be some heat produced as a result of friction between the rubber band and the board, and also some heat produced as a result of internal friction within the rubber band itself, as it ...
gandalf61's user avatar
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