4. An alloy circular bar rigidly fixed at its both ends uniformly tapers from 90 mm to 60 mm fromone end to another. What will be the maximum stress developed in the bar, when its temperatureis raised through 20 K? Take E and a for the bar material as 150 GPa and 12 x 10 /K. Also findthe maximum stress when the bar is lowered by the same temperature.[Ans. 54 MPa (Compn.): 54 MPa (Tension)]

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Answered: -bar rigidly fixed at its both ends…

-bar rigidly fixed at its both ends uniformly tapers from 90 er. What will be the maximum stress developed in the bar, w Con the bor material as 150 GRa and 12

Mechanics of Materials (MindTap Course List)

9th Edition

ISBN:9781337093347

Author:Barry J. Goodno, James M. Gere

Publisher:Barry J. Goodno, James M. Gere

Chapter11: Columns

Section: Chapter Questions

Problem 11.6.1P: A steel bar has a square cross section of width b = 2.0 in. (sec figure). The bar has pinned...

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Concept explainers

Stress transformation

The term stress indicates the measure of internal forces that develop due to an external force's application on an object. When a specific external force is applied to an object, internal stress generates in the material. The value of stress can obtain by taking the ratio of the externally applied force and cross-sectional area of the object. There are different types of stress depending on the type of external force.

Question

4. An alloy circular bar rigidly fixed at its both ends uniformly tapers from 90 mm to 60 mm from
one end to another. What will be the maximum stress developed in the bar, when its temperature
is raised through 20 K? Take E and a for the bar material as 150 GPa and 12 x 10 /K. Also find
the maximum stress when the bar is lowered by the same temperature.
[Ans. 54 MPa (Compn.): 54 MPa (Tension)]

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