Answer to Question #119033 in Civil and Environmental Engineering for Eddy

Question #119033
A straight aluminum wire 30m Long is subject to a tensile stress of 70MPa.
1. Determine the total elongation of the wire.
2. What temperature change would produce the same elongation
Take: Elastic modulus = 200GNM^-2 And temperature coefficient = 25 × 10^-6
1
Expert's answer
2020-06-10T07:51:15-0400

l=30 m, 70 MPa,Y=200 GPa

we know that

stress=

here ,


(b) as per the concept of thermal stress

10.5 =


13.33 This is the temperature difference which will produce above elongation


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