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Stress/Strain moduli
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graceqi18
#1 Posted : Monday, July 01, 2013 1:37:11 PM
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Are we supposed to know the Young's/Shear/and Bulk moduli formulas ? It only briefly described them in the Exam Krackers book but there were many questions about them at the end of that section.

I don't really understand what each "modulus" is, are they all just constants for a certain substance/material ?

Thanks for any help !
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simonfeng
#2 Posted : Wednesday, July 03, 2013 2:48:02 AM
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It would be good to be familiar with them. Yes they are constants and compare the stress/strain of a certain object. Each substance or material will have its own unique modulus. You just have to remember that it is the stress applied on an object compared to the "strain" that it experiences. Usually some combination of pressure/force over a change in length/area/volume.
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