Stress/ Strain
Knowns: E=
L = 1000’ = 12000”
P = 2000 lb
Unknowns: ε
Unknowns:
n Example 2
A = 3.5 in2
= 29 x 106 psi
Stress/ Strain
Substitution/Solve:
= PL = (2000lb)(12
AE (3.5in2 )(29x
ε = = .236in = 0.0
L 12000in
n Example 2
2000in) =0.236 in
x106 psi)
0000197in
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Proportional Limit: greatest stress a material is capable of withstanding without deviation from straight line proportionality between the stress and
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