Young's Modulus of Elasticity Problems -

[joe465]

Still having problems finding which materials they are. Material Y young's modulus is 270 GPa and looking at the stress strain graph it has a UTS of 700 MPa. I can't find a material which matches this, please help. Chromium has a Young's Modulus of 279 GPa but i can't find the UTS anywhere.

 

[Chestermiller]

Still having problems finding which materials they are. Material Y young's modulus is 270 GPa and looking at the stress strain graph it has a UTS of 700 MPa. I can't find a material which matches this, please help. Chromium has a Young's Modulus of 279 GPa but i can't find the UTS anywhere.

Steel looks like a possibility.

 

[joe465]

Yeah i went for steel because the stress strain shows two yield points which is a common steel reflection. Now just material Z. My tutor said it should be between 500-600 Pascals but i can't get this value at all no matter which units i use?

Stress Strain
70 0.06
100 0.11
150 0.22
200 0.35
220 0.48

Thats material Z's Stress-Strain Data.

 

[Chestermiller]

I fit a quadratic to these points, and got ~700 Pa at ~0 Pa stress. That should be good enough. If the units are really Pascals, I don't know of any materials with that low a Young's modulus.