The figure shows an industrial mixing machine, where the mixing blades are drivenby a vertical shaft, which in turn is driven by a chain driven sprocket wheel. Thesprocket mechanism delivers a power of P kW at 250 RPM through a 250 mmmean diameter sprocket wheel, assuming no tension (Tension = 0) in the non-driving portion of the chain. Assume the drive shaft is machined, and 99%reliability is required.a) Choose an appropriate material for the shaft and list its appropriate materialproperties.b) Draw a FBD for the shaft and determine the critical location.c) Derive an expression for the bending moment and torque in terms ofunknown geometry values at the critical location with appropriate stressconcentration factors.d) Apply appropriate fatigue and/or static failure theories and determine theunknown diameters of the shaft assuming a factor of safety, n = 1.75.e) Choose a standard diameter for the shaft and calculate its realizedfatigue/yield factors of safety.P kW = 3 kW.D dia.PMixingblades:Mixing bowldia.r50mmrad.ChainChain sprocket250mm mean diameter.

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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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Design a driver shaft to be used with the following belt drive. Assume the shaft is simply supported by two bearings at both ends, and the effective diameter for the driving pulley is 100 mm. Do the following 1) Sketch shaft layout 2) Select Shaft components required to lock the axial position of the pulley and allow torque transmission 3) Size the driver shaft diameter and length if the driving torque is 5 Nm. And rotation speed of 1500 rpm. You are free to choose your own material **** Use DE-Goodman criteria for sizing and make sure that the shaft works within its critical speed.*** Answer: DRIVER SHAFT Design this driving shaft Shaft A SLACK SIDE TIGHT SIDE M R DRIVEN SHAFT
A punching press pierces 40 holes per minute in a plate using 10 kN-m of energy_per hole during each revolution. Each piercing takes 35 per cent of the time needed to make one revolution. The punch receives power through a gear reduction unit which in turn is fed by a motor driven belt pulley 770 mm diameter and turning at 250 r.p.m. Find the power of the electric motor if overall efficiency of the transmission unit is 88 per cent. Design a cast iron flywheel to be used with the punching machine for a coefficient of steadiness of 5, if the space considerations limit the maximum diameter to 1.3 m. Allowable shear stress in the shaft material = 50 MPa Allowable tensile stress for cast iron = 4 MPa Density of cast iron = 7200 kg/m3
Design of a Shaft subjected to Alternating Loads 1. [Proof of Concept] Considéra machined steel circular shaft subjected to maximum and minimum bending moment of 1000 and 4000 lb .in, respectively; and a maximum and minimum torque of 250 and 1600 Ib.in, respectively. Consider the factor of safety to be 2, the yield strength of the materials 40 ksi, and its ultimate strength to be 70ksi.Determine the minimum diameter of the shaft for the case where D is 20% larger than d, the fillet radius is 10% of d, and reliability is 99%. You may use DE-ASM E formula. 2. Write a computer code that can take Tm, Ta, Mm, Ma, choice of material, safety factor, and other necessary assumptions from the user and return an estimated diameter for the shaft.Choice of inputs is up to you. Note that many of the required quantities are themselves function of the shaft diameter. Your code should be submitted with a report.
Please answer the problem with FREE BODY DIAGRAM AND COMPLETE SOLUTIONS. Also, box the final answer and explain the step-by-step solutions. Thank you! GUARANTEED UPVOTE!!!! STRENGTH OF MATERIALS Topics: Torsion Flanged Bolt Couplings Torsion of Thin-Walled Tube Helical Springs PROBLEM:The turbine motor moving at 378 rev/ min can produce 2.5 hp. The shaft diameter is 1.25 inches. Calculate the torque and shearing stress developed in the shaft.
Case 1: case of the twisted shaft)The shafting shown in Figure 2.51 was taken from a mill transfer chain that was frequently overloaded, causing the shaft (made of low-carbon steel) to fail by torsion shear. It has obviously been loaded in torsion beyond its elastic limit into the plastic range and has taken a permanent set. Since the sprocket and bearing bores are bot easily changed to substitute a larger diameter shaft, what type of replacement shaft will solve the problem? What different mechanical properties must it posses so it will not again fail by torsion shear?
The shafting shown in Figure 2.51 was taken from a mill transfer chain that was frequentlyoverloaded, causing the shaft (made of low-carbon steel) to fail by torsion shear. It has obviouslybeen loaded in torsion beyond its elastic limit into the plastic range and has taken a permanentset. Since the sprocket and bearing bores are bot easily changed to substitute a larger diametershaft, what type of replacement shaft will solve the problem? What different mechanicalproperties must it posses so it will not again fail by torsion shear?
Find the minimum shaft diameter (dmin) of the gear system given the dimensions and load values. A gear section circle diameter 40 cm; Bgear section circle diameter 20 cm; (The weight of gear wheels will be neglected); Shaft material property: Shaft material feature:yield strength = 3000N / cm; Shaft material property: yield strength = 3000N / cm2; Yield strength k = 4500N / cm2; safety coefficient = 4; K = 3 (factors)
b) Calculate the minimum length of a parallel key for a gear which is to be mounted on a 50 mm diameter shaft. The key is made from a material with an ultimate tensile strength, Suts = 500 Mpa, and a yield strength of Sy = 400 Mpa. The gear transmits a torque of 1850 Nm and has a hub length of 80mm. (Include a safety factor of 2, and use ANSI recommendations for width of key). Comment on the result.
n Mukwano Industries, a shaft assembly shown in Fig. 2 is driven by a flat belt at location A and drives a flat belt at location B. The drive belt pulley diameter is 300 mm; the driven belt pulley diameter is 500 mm. The distance between sheaves is 800 mm, and the distance from each sheave to the nearest bearing is 200 mm. The belts are horizontal and load the shaft in opposite directions. Determine the size of the shaft using Distortion Energy Theory (DET) and the types of steel that should be used. Use a safety factor of 10. Also, provide a free-body diagram as well as moment and torque diagrams
Mechanical Engineering A chain drive is desired to couple a gear motor with a bucket elevator. The 40 hp gearmotor will operate at 350 rpm and the elevator drive shaft must operate as close to 60 rpm as possible. (a) Select an appropriate chain size, commercially available sprockets, and number of links for a chain. (b) Calculate the actual chain speed and the center distance.
B) A simply supported shaft is shown in the following Figure. A constant magnitude distributed unit load p is applied as the shaft rotates. The shaft is also subject to a steady torque of Tmax 2000-N -m., find the diameter of shaft required to obtain a safety factor of 2.5 in fatigue loading if the shaft is steel of Sut 814 MPa and Sy 703 MPa. The dimensions are in cm, the distributed force in N/cm, and the torque is in N-m. No stress concentrations are present, the shaft is machined, the required reliability is 90%, and the shaft operates at room temperature Figure: 1= 20-cm: b = 18-cm ; a = 16 cm Applied distributed load p:= 1000 N em ; 区区

Project 3: Solid and hollow shafts are most often used to provide power transmission of the rotating motion from the power sourcelengine to the car's wheels. In car manufacturing factory, your role is to determine the distribution of shear stress and the angular deflection due to predefined applied torsions to analyses and investigate the minimum and maximum stresses generated in the shafts. Considering the shaft in Figure 3, including a hollow part AB and solid part BC, your manger asked you to perform the following tasks: 1- Determine the maximum and minimum shearing stress in shaft AB, giving that the outer diameter is 85 mm. 2- Sketch the distribution of the shear stress due to torsion in shaft AB. (simple sketch of shear stress "r" vs. shaft radius "p" for the elastic region) 3- Make a simple sketch the distribution of the angular deflection due to torsion in shaft AB. (simple sketch of torsion "T vs. angle of twist "0" for the elastic region) 4- Determine the required diameter of…

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