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E Young's Modulus of Intact Rock and its unit.

E Young's Modulus of Intact Rock and its unit.

E Young's Modulus of Intact Rock and its unit.

(OP)
I calculated the young's Modulus of an intact Rock by UCS. Stress/Strain at max.
so what is it's proper unit when stress is kg/cm2 and strain in mm
and is it right if I put L length is cm and deflection in mm ( Delta L mm / Li cm) or its unit must be the same? ( both are mm) ?

RE: E Young's Modulus of Intact Rock and its unit.

I have not yet worked with rocks but i think you should convert kg/cm² to kpa or Mpa and let mm as it is .

RE: E Young's Modulus of Intact Rock and its unit.

It's whatever you need to make your presentation readable and understandable.

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RE: E Young's Modulus of Intact Rock and its unit.

modulus has units of F/L^2

f-d

ípapß gordo ainÆt no madre flaca!

RE: E Young's Modulus of Intact Rock and its unit.

Strain is not in units of length, mm, as it is the change in length (mm) divided by the original length (mm), hence mm/mm. That is why Young's Modulus is in the same units as the stress. (rather than length, you might think thickness).

RE: E Young's Modulus of Intact Rock and its unit.

Units must Always be coherent, cm with cm and mm with mm.

Anyway, you can check your value with tables, if it is a hard intact rock, young's modulus value should likely be in the order of a few GigaPascals up 20 GPa depending on rock type.

1 GPa = 10000 kg/cm2 = about 10000 tsf

www.mccoy.it

RE: E Young's Modulus of Intact Rock and its unit.

be sure to use kgf (kilograms force)to avoid conversion errors in Mathcad.

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