1.Determine the total extension of the composite spring when subjected to the maximumload.2.Calculate the total strain energy in the spring assembly. A composite spring consists of a steel close-coiled helical spring and a bronze close-coiled helical spring arranged in series. Data for the springs are given in the table below:DdnGTAllowable250 MPa1080 GPaSteel SpringBronze Spring40 mm40 mm4.5 mm4.5 mm?40 GPa181 MPa

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Answered: 1.Determine the total extension of the…

1.Determine the total extension of the composite spring when subjected to the maximum load. 2.Calculate the total strain energy in the spring assembly.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter2: Axially Loaded Members

Section: Chapter Questions

Problem 2.5.31P

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Concept explainers

Strain energy

The term strain indicates the variation in an object's length, area, and volume when the object is subjected to an external force. The external force may be of normal, shear, moment, torque, etc. The strain in an object depends on the types of external force and cross-section of the object. Mathematically, the evaluation of strain can be obtained with the help of elastic constants.

Question

1.Determine the total extension of the composite spring when subjected to the maximum
load.
2.Calculate the total strain energy in the spring assembly.

A composite spring consists of a steel close-coiled helical spring and a bronze close-
coiled helical spring arranged in series. Data for the springs are given in the table below:
D
d
n
G
TAllowable
250 MPa
10
80 GPa
Steel Spring
Bronze Spring
40 mm
40 mm
4.5 mm
4.5 mm
?
40 GPa
181 MPa

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