A rotating shaft is made of 42- × 4-mm AISI 1018 cold-drawn steel tubing and has a 6-mm-diameter hole drilled transversely through it. Estimate the factor of safety guard- ing against fatigue and static failures using the Gerber and Langer failure criteria for the following loading conditions: (a) The shaft is subjected to a completely reversed torque of 120 N · m in phase with a completely reversed bending moment of 150N · m. (b) The shaft is subjected to a pulsating torque fluctuating from 20 to 160 N · m and a steady bending moment of 150 N · m.

A rotating shaft is made of 42- × 4-mm AISI 1018 cold-drawn steel tubing and has a 6-mm-diameter hole drilled transversely through it. Estimate the factor of safety guard- ing against fatigue and static failures using the Gerber and Langer failure criteria for the following loading conditions: (a) The shaft is subjected to a completely reversed torque of 120 N · m in phase with a completely reversed bending moment of 150N · m. (b) The shaft is subjected to a pulsating torque fluctuating from 20 to 160 N · m and a steady bending moment of 150 N · m.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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Introduction to Engineering Design Process

The engineering design process is a set of steps that engineers follow to come up with a solution to a particular problem. The solution to the problem involves the designing of a product that can accomplish a certain task and can qualify certain criteria. The process of designing is completely different from that of the scientific method, that you may be familiar with. If the project utilizes the observations, and the experiments then the engineering design process must be followed. The diagram shows the steps of the engineering design process, and the table below describes each step in more detail:

Question

MECH.ENG. DESIGN 1 PART 2

A rotating shaft is made of 42- × 4-mm AISI 1018 cold-drawn steel tubing and has a
|6-mm-diameter hole drilled transversely through it. Estimate the factor of safety guard-
ing against fatigue and static failures using the Gerber and Langer failure criteria for the
following loading conditions:
(a) The shaft is subjected to a completely reversed torque of 120 N - m in phase with a
completely reversed bending moment of 150 N · m.
|(b) The shaft is subjected to a pulsating torque fluctuating from 20 to 160 N · m and a
steady bending moment of 150 N · m.
Sut = 440 MPa, S,= 370 MPa,

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