Answered: A steel bar 300 mm long, 50 mm wide and…

A steel bar 300 mm long, 50 mm wide and 40 mm thick is subjected to a pull of 300 kN in the direction of length. Determine the change in volume. Take E = 2x105 N/mm2 and μ = 0.25.

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter7: Analysis Of Stress And Strain

Section: Chapter Questions

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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

A steel bar 300 mm long, 50 mm wide and 40 mm thick is subjected to a pull of 300 kN
in the direction of length. Determine the change in volume. Take E = 2x105 N/mm2
and μ
= 0.25.

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