Answered: Find the strain energy of a steel rod,…

Find the strain energy of a steel rod, of diameter 20 mm and length 400 mm, when it is subjected to an axial load of 40 kN. What is the elongation of the rod under this load? Take E = 200 GPa.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter3: Torsion

Section: Chapter Questions

Problem 3.9.5P: A circular tube AB is fixed at one end and free at the other. The tube is subjected to concentrated...

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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

Find the strain energy of a steel rod, of diameter 20 mm and length 400 mm,
when it is subjected to an axial load of 40 kN. What is the elongation of the rod
under this load? Take E = 200 GPa.

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