extensional strain given in Eq. 2.35, show that the change
in length, AL, of a thin wire whose original length is L is
given by AL= f(x) dx, where e,(x) is the extensional
strain of the wire at x. (b) Determine the elongation of a
2-m-long wire if it has a coefficient of thermal expansion
a 20 x 10 °C, and if the change in temperature along
the wire is given by AT = 10x² (°C).
+
(a) Before deformation.
(b) After deformation.
P2.12-9
AL
Fig: 1