-1. A steel pipe line with a nominal diameter of 36 in has an ID of 34.50 in (899 mm) and a wall thickness of 0.75 in (19 mm). The line is 500 ft (152.5 m) long and is embedded at each end in a rigid concrete structure. The temperature of the line may vary from -20 to +120°F. What is the maximum thrust which can be developed by temperature changes? What stress does this produce in the pipe?

-1. A steel pipe line with a nominal diameter of 36 in has an ID of 34.50 in (899 mm) and a wall thickness of 0.75 in (19 mm). The line is 500 ft (152.5 m) long and is embedded at each end in a rigid concrete structure. The temperature of the line may vary from -20 to +120°F. What is the maximum thrust which can be developed by temperature changes? What stress does this produce in the pipe?

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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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

i-1. A steel pipe line with a nominal diameter of 36 in has an ID of 34.50 in (899 mm) and
a wall thickness of 0.75 in (19 mm). The line is 500 ft (152.5 m) long and is
embedded at each end in a rigid concrete structure. The temperature of the line
may vary from -20 to +120°F. What is the maximum thrust which can be
developed by temperature changes? What stress does this produce in the pipe?

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* Your answer is incorrect. The composite shaft consists of two steel pipes that are connected at flange B and securely attached to rigid walls at A and C. Steel pipe (1) has an outside diameter of 8.625 in., a wall thickness of 2.6 in., and a length of L₁ = 17 ft. Steel pipe (2) has an outside diameter of 5.8125 in., a wall thickness of 1.14 in., and a length of L₂ = 24 ft. Both pipes have a shear modulus of 12900 ksi. If a concentrated torque of 30 kip-ft is applied to flange B, determine: (a) the maximum shear stress magnitudes T₁, T2 in pipes (1) and (2). (b) the rotation angle (PB/A of flange B relative to support A. Answers: (a) TI = (b) (PBIA L₁ € i 2.511 = i 0.74 B TB L2 (2) ksi, 12 = i с 1.201 X ksi.