Question 11 ptsThe drive shaft of a car is subjected to both bending and torsion. The torque, T, is constant at400 Nm and the bending moment has the following cycle parameters: mean moment of Mm= 250 Nm and alternating moment of Ma = 800 Nm.The shaft is forged from high-carbon steel with an ultimate strength Sut = 615 MPa andendurance limit Se' = 307.5 MPa. The reliability must be 90% and the safety factor is nf = 2.7.For the analysis of the stress concentration, assume the proportions shown in the figure and asize factor kb = 0.9. To evaluate the factors kt, kts, q and qs, it is recommended to use Excelspreadsheets. Calculate the first estimate of the minimum shaft diameter (d) in millimetersusing the Goodman criterion.1≥4DIdD/d = 1.33r/d = 0.25r≥ 4 mm (To evaluate q and qs, it is initially recommended r = 4 mm)

To calculate the minimum shaft diameter d using the Goodman criterion, we need to follow these…

Answered: Question 1 1 pts The drive shaft of a…

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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A propeller shaft rotating at constant speed is subjected to variable loads.Ball bearing supporting the shaft are subject to variable radial loads as follows;16KN for 40 percent of the time,2KN for 10 percent of the time,4KN for 20percent of the time and no load for the remaining time of the cycle.The total life expected for bearing is 3×10^6 revolution at a liability of 94 percent.select the bearing by calculating; a)Net dynamic load for the bearing b)load rating of the bearing from the manufacturers catalogue
1) A shaft is loaded in bending and torsion such that Ma = 70 N-m, Ta = 45 N-m, Mm = 55 N-m, and Tm = 35 N-m. For the shaft, Sut = 700 MPa and Sy = 560 MPa. A fully corrected Se = 210 MPa is assumed. Let K; = 2.2 and Kfs = 1.8. With a design safety factor of 2.0, determine the minimum acceptable diameter of the shaft using: a. DE-Modified Goodman criterion b. DE-ASME Elliptic criterion C. DE-Gerber criterion
1.
Draw FBD and determine Stress and Safety Factor of Bicycle Axle (Thru Axel) Specification Weight of cyclist = 120 kg. Materials: Aluminum alloy (AL 6061-T6) Dimension: Length = 122 mm, Diameter = 12 mm, Thread pitch = 1.75 mm, Thread Length = 16 mm.
Compute the contact stress number for the gear fain pair driven directly by an electrical motor. The driven machthe is concrete mixture with moderate shock, the other data are given below. Ks= 1.00, Km 1.21, Vt =1527 St/min, Av-11 Pd= 6, np= 1750rp.m, Np 20, No= 70, F=2.00/n Tp = 900ib, Dp= 3:333 in The material used for pioin an gear is Steel
Using the DE-Goodman criteria and a design factor of 1.5, calculatethe diameter based on the shaft’s loadings and your guess for theshaft’s diameter at the critical location. What is the shaft diameter? Material: 1030 Q and T → Sᵤₜ: 848 MPa, Sy: 648 MPa TM=306 NM MA=698.28 NM ta=0 mm=0
Design and draw a neat sketch of a cast iron protective type flange coupling to transmit “P” kW at “N” rpm. from a turbine generating n electric motor to a compressor. The service factor may be assumed as 1.35. The following permissible stress may be used: Shear stress for shaft, bolt and key material = 40 MPaCrushing stress for bolt and key = 80 MPaShear stress for cast iron = 8 MpaSpeed N in Rpm = 250Power P in kN = 21
3. A motor is connected by a belt to pulley B. T, is the tight-side tensile force equal to 1800 N. The shaft spins at a constant speed, 650 rpm. The power delivered by the motor is 12.6 kW. On pulley A, connected to the load, the slack side of the belt has a tension equal to th of the tight side. b T T, B d shaft Dimensions are as follows: da 200 тm 300 тт | 250 тm |180 тm | 250 тm 26 тm dB dahaft a We analyzed a problem similar to this on Test 01 using static failure theories. Is this strictly correct? Because the shaft is spinning, would not a material particle see a time-varying reversal of the the bending stress as in the R.R. rotating beam test? Would a particle see a reversal of the torsional shear stress? Assume Sut = 370 MPa and Sy = 300 MPa. Ignore Marin factors. Ignore stress concentrations. Ignore direct shear stress (that due to V). Find the safety factors with respect to fatigue and yielding. Be guided by section 6-14 on combined loading.
A protective ﬂange coupling is used to connect two shafts and transmit 7.5 kW power at 720 rpm. The design torque is 150% of the rated torque. The shafts and bolts are made of plain carbon steel 30C8 (Syt = 400 N/mm2) and the factor of safety is 5. Assume, Syc = 1.5 Syt and Ssy = 0.5 SytThe ﬂanges are made of cast iron.Calculate:(i) diameter of the shafts;(ii) number of bolts; and(iii) diameter of the bolts.
Pls. Answer thank you!
%AY l. +11:47 The shaft shown below consists of three segments AB, BC and CD is subjected to the three torques T1=114 N.m, T2=245 N.m and T3=441 N.m. The length of each segment is L1=0.71 m, L2=0.31 m and L3=0.43 m. The diameter of each segment is d1=46 mm, d2=97 mm and d3=131 mm. The material have modulus of rigidity G=143 Gpa. Answer the following questions d3 T3 d2 T2 T1 d1 в 1 - L3 L2 L1 The polar moment of inertia of the segment AB is 2.89125E-05 2.5096E-05 3.7326E-05 2.85944E-05 2.93461E-05 Clear selection
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