PROBLEM 7:5 Find the shear stresses in the spar webs and skin of the section shown in the figure given. Shear = 15,000 lb. Torsion about front spar = 600,000 in. lb. Q of rear spar flange I of total section = 300 in = 3 in3 40 r.040 .072 15 A= 520 IN? 10 .040 .045

PROBLEM 7:5 Find the shear stresses in the spar webs and skin of the section shown in the figure given. Shear = 15,000 lb. Torsion about front spar = 600,000 in. lb. Q of rear spar flange I of total section = 300 in = 3 in3 40 r.040 .072 15 A= 520 IN? 10 .040 .045

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 3.11.5P: A square tube section has side dimension of 20 in. arid thickness of 0.5 in. If the section is used...

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Concept explainers

Torsion

In mechanical engineering, torque, torsion, and twisting moment are three of the most important concepts which have different meanings. Torque is the consequence of a moment of a force that produces an angular acceleration in a body or induces rotational kinetic energy in a body. For instance, in an automobile, the power transmission shaft is a body that is always under rotation due to the external torque acting on it, this torque is created by the engine.

Question

PROBLEM 7:5
Find the shear stresses in the spar webs and skin of the section shown
in the figure given.
Shear = 15,000 lb.
Torsion about front spar = 600,000 in. lb.
Q of rear spar flange
I of total section = 300 in
%3D
3 in3
40
r.040
.072
15
A = 520 IN
10
.040
.045

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