Permanent Offset (stress strain)

[Marchese_alex]

Sorry for the inverted picture...

"y" axis: top to bottom is 500 400 250
"x" axis: at B is .00125 at E is .05
modulus elasticity is E=200GPa

so from AB=.00125
from CD=.002 calculated: epsilon=400x10^6/200x10^9

I need to find permanent offset(AC) and I don't know How to find the missing distance of BC

 

[Marchese_alex]

ok, it is solved by interpolating but I don't know how to do that, to be more precise I have no clue how to interpolate

 

[Marchese_alex]

nevermind, got it