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MACHINE DESIGN  An
2111
PROBLEM 211
Statement:
A material has a yield strength of 60 ksi (414 MPa) at an offset of 0.2% strain.
What
is its modulus of resilience?
Units:
ksi
10
3
psi
.
MPa
10
6
Pa
.
GPa
10
9
Pa
.
MJ
10
6
joule
.
Given:
Yield strength
S
y
60
ksi
.
S
y
414
MPa
=
Yield strain
ε
y
0.002
Solution:
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Unformatted text preview: See Mathcad file P0211. 1. The modulus of resilience (strain energy per unit volume) is given by Equation (2.7) and is approximately U R 1 2 S y . y . U R 60 in lbf . in 3 = U R 0.414 MJ m 3 = U R 0.414 MPa = P 0211.mcd...
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This note was uploaded on 04/26/2010 for the course MAE 3242 taught by Professor N/a during the Spring '10 term at University of TexasTyler.
 Spring '10
 N/A
 Machine Design, Strain

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