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Here is my problem:

A Cylinder with a Volume of 8000m3 has a pressure of 80MPa, Bulk Modulus of 74 MPa. I need to calculate the Young s modulus and determine the material type.

So Far here is what i have:

**Using Bulk Modulus, Volumetric Strain can be found:**

Bulk Modulus K = Pressure

**/**Volumetric Strain

Volumetric Strain = Pressure / Bulk Modulus K = 80 x 106 Pa / 74 x 106 Pa = 1.081

**Volumetric Strain Can also be determined using this formula:**

Volumetric Strain = Change in Volume / Volume

**Then the Change in Volume can be found using the Volumetric Strain:**

Change in Volume = Volumetric Strain x Volume = 1.081 x 8000m3 = 8648m3

My train of thought with calculating the youngs modulus is to use

E = Stress (Volume x Pressure) / Volumetric strain

So E = 592.05 GPa

Or by Using K

E = 3K(1-2v) --> 3x74MPa x (1-0.6) = 88.8MPa

But neither answer looks right. Have i overlooked something here?

Your input will be greatly appreciated.