8.22 (C). A uniform solid shaft of circular cross-section will drive the propeller of a ship. It will therefore necessarily be subject simultaneously to a thrust load and a torque. The magnitude of the thrust can be related to the magnitude of the torque by the simple relationship N = KT, where N denotes the magnitude of the thrust, I that of the torque and K is a constant. There will also be some bending moment on the shaft. Assuming that the design requirement is that the maximum shearing stress in the material shall nowhere exceed a certain value, denoted by T, show that the maximum bending moment that can be allowed is given by the expression Kr - [(-₁) "¹² - K² ] T 472 4 bending moment, M = where r denotes the radius of the shaft cross-section. [City U.]

8.22 (C). A uniform solid shaft of circular cross-section will drive the propeller of a ship. It will therefore necessarily be subject simultaneously to a thrust load and a torque. The magnitude of the thrust can be related to the magnitude of the torque by the simple relationship N = KT, where N denotes the magnitude of the thrust, I that of the torque and K is a constant. There will also be some bending moment on the shaft. Assuming that the design requirement is that the maximum shearing stress in the material shall nowhere exceed a certain value, denoted by T, show that the maximum bending moment that can be allowed is given by the expression Kr - [(-₁) "¹² - K² ] T 472 4 bending moment, M = where r denotes the radius of the shaft cross-section. [City U.]

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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