BendingTorsionalAxialShoulder fillet-sharp (r/d = 0.02)2.72.23.0Shoulder fillet-well rounded (r/d = 0.1)1.71.51.9End-mill keyseat (r/d = 0.02)2.143.0Sled runner keyseat1.7|Retaining ring groove5.03.05.0 Obtain a preliminary design of the shaft by performing the following tasks. Note that forces T1=2880N and T=432 N. The maximum bending moment is at x= 230 mm (point B), and it equals M= 698.3N•m completely reversed, where the torque is constant at 612 N.m at the same point.The shaft material is AISI 1020 CD steel. Take the stress concentration conditions at B to be Shoulderfillet-sharp, with notch radius r=0.6 mm (Table 7-1).230 mmT,280 mm30-mm dia.T,300 mm250-mm dia.400-mm dia.270 Nx1800 Na) Sketch a general shaft layout in 2D (x – y axes), including all components and torques, thencalculate all reactions. :b) Based on the current shaft dimensions and using only forces at B and C, find the lowest criticalspeed of the shaft. (;c) Determine the fatigue factor of safety of the rotating shaft with the current dimensions using theDE-Gerber criteria. Use Eqs. 6-8 and 6-18 to find the endurance limit, account only for ka andk, in Eq. 6-18 and assume all remaining factors as 1.,Discard the indicated shaft diameter and use DE-Goodman criteria to determine the criticaldiameter of the shaft based on infinite fatigue life with a design factor n of 1.5. (Take the samevalue of endurance limit as that used in part e of this problem). (:

GIVEN: Force T1= 2880 NT2= 432 N Mmax=698.3 Nm @ x=230 mm torque T=612 Nm Shaft material: AISI…

Obtain a preliminary design of the shaft by performing the following tasks. Note that forces Ti=2880 N and T2-432 N. The maximum bending moment is at x = 230 mm (point B), and it equals M= 698.3 N•m completely reversed, where the torque is constant at 612 N.m at the same point. The shaft material is AISI 1020 CD steel. Take the stress concentration conditions at B to be Shoulder fillet-sharp, with notch radius r=0.6 mm (Table 7-1).

Obtain a preliminary design of the shaft by performing the following tasks. Note that forces Ti=2880 N and T2-432 N. The maximum bending moment is at x = 230 mm (point B), and it equals M= 698.3 N•m completely reversed, where the torque is constant at 612 N.m at the same point. The shaft material is AISI 1020 CD steel. Take the stress concentration conditions at B to be Shoulder fillet-sharp, with notch radius r=0.6 mm (Table 7-1).

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

Bending
Torsional
Axial
Shoulder fillet-sharp (r/d = 0.02)
2.7
2.2
3.0
Shoulder fillet-well rounded (r/d = 0.1)
1.7
1.5
1.9
End-mill keyseat (r/d = 0.02)
2.14
3.0
Sled runner keyseat
1.7
|
Retaining ring groove
5.0
3.0
5.0

Obtain a preliminary design of the shaft by performing the following tasks. Note that forces T1=2880
N and T=432 N. The maximum bending moment is at x= 230 mm (point B), and it equals M= 698.3
N•m completely reversed, where the torque is constant at 612 N.m at the same point.
The shaft material is AISI 1020 CD steel. Take the stress concentration conditions at B to be Shoulder
fillet-sharp, with notch radius r=0.6 mm (Table 7-1).
230 mm
T,
280 mm
30-mm dia.
T,
300 mm
250-mm dia.
400-mm dia.
270 Nx
1800 N
a) Sketch a general shaft layout in 2D (x – y axes), including all components and torques, then
calculate all reactions. :
b) Based on the current shaft dimensions and using only forces at B and C, find the lowest critical
speed of the shaft. (;
c) Determine the fatigue factor of safety of the rotating shaft with the current dimensions using the
DE-Gerber criteria. Use Eqs. 6-8 and 6-18 to find the endurance limit, account only for ka and
k, in Eq. 6-18 and assume all remaining factors as 1.,
Discard the indicated shaft diameter and use DE-Goodman criteria to determine the critical
diameter of the shaft based on infinite fatigue life with a design factor n of 1.5. (Take the same
value of endurance limit as that used in part e of this problem). (:

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Problem 1: (P9, P10, M5, M7, D5) Obtain a preliminary design of the shaft by performing the following tasks. Note that forces T1=2880 N and T2-432 N. The maximum bending moment is at x =230 mm (point B), and it equals M= 698.3 N•m completely reversed, where the torque is constant at 612 N.m at the same point. The shaft material is AISI 1020 CD steel. Take the stress concentration conditions at B to be Shoulder fillet-sharp, with notch radius r=0.6 mm (Table 7-1). 230 mm 280 mm 30-mm dia. 300 mm 250-mm dia. 400-mm dia. 270 N X. 1800 N