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.
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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.
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- Please answer in this format. Sketch: Given: Required: Solution: (Please answer in detailed (step by step). Indicate labels on what you are doing/performing, for example what formula is used) A torque To is transmitted between two flanged shafts by means of four 20-mm bolts. diameter of the bolt circle is 2=150mm. If the allowable shear stress in the bolts is 90 Mpa, what is the maximum permissible torque? Disregard friction between between flanges. The ToPlease solve ellaborately and include the untis in every step, show diagram and write your solutions clearly and readable if your solution is in written form. Your work will be appreaciated much. Thank You! Two shafts 30 in. apart, each carrying a four-step pulley, are to be connected by a crossbelt. The driving shaft is to turn 180 rpm while the driven shaft is to turn 50, 150, 250,and 600 rpm. The smallest step of the driver is 10 in. in diameter. Find (a) the diametersof all the steps, (b) angle of contact for each pair of pulleys, and (c) belt length.Please give step by step solution other wise don't answer I will report to Bartley team. A medium carbon steel shaft transmits 25 kW at 450 r.p.m. The diameter of shaft is 40 mm. A square key is used whose one side is equal to 1/4th of the shaft diameter and whose length is equal to 1.5 times of the shaft diameter. Find the dimensions of the key and check the key for the induced shearing stress and crushing stress.
- 4. A 9-tooth sprocket operating at 200rev/min drives a 23-tooth sprocket. The pitch of this chain is 41.4 mm and the ultimate strength is 9.34 kN. Calculate the average linear speed, recommended maximum power and average torque applied to the drive shaft at recommended power.Provide step-by-step solution with complete given and formula to this problem. Draw sketch also. A mine hoist is to carry a cage loaded with ore at a total load of 8 tons. The depthof mine shaft is 328 ft. A 6 x 19 IPS wire rope with rope diameter of 1.75 in is to beuse with sheave diameter of 39 in. The cage loaded is to start from rest and will attaina maximum velocity of 525 fpm in 10 seconds. Find the total load of the rope. A. 12,086 lbs B. 14,086 lbs C. 16,086 D. 18, 086 lbsI want right solution plz solve if you know 100% flange coupling connects two 50 mm diameter lengths of commercial shafting. The coupling flanges are bolted together with four bolts of the same material as the shaft. The bolts are set in clearance holes. The diameter of the bolt circle is 240 mm and the flange thickness is 22 mm, Determine the minimum bolt diameter required to transmit the same torque that the shaft can transmit. What power may be transmitted at 200 rev/ min under steady load conditions?
- Q1: Design and draw a cast iron flange coupling for a mild steel shaft transmitting 80 kW at 220 rpm with the following specifications: Allowable shear stress in the shaft = 400 MPa Permissible angle of twist < 1° in a length of 20 diameters Allowable shear stress in the coupling bolts 30 MPa Rigidity modulus of shaft materials = 85 GPa Allowable shear stress for hub material = 15 MPa You may adopt, width of key = 25 mm, thickness of key = 14 mm You may also consider that the shaft and key are made of the same material. Four number of bolts are to be used in the coupling. Find out the diameter of the shaft required and main dimensions of the flanges and the key. Adopt suitable dimensions. Draw a neat sketch for the flange coupling with the designed dimensions.3. The safe working stress of a belt is equal to the tight side tension over the product of the belt's width and thickness. Find the width of the belt if a 610mm diameter pulley transmits 40 kW at 500 rpm, the arc of contact is 144°, coefficient of friction is 0.35, safe working stress of the belt is 2.1 MPa and thickness is 6mm.Please solve ellaborately and include the untis in every step, show diagram and write your solutions clearly and readable if your solution is in written form. Your work will be appreaciated much. Thank You! Two pulley 12 in diameter and 20 in diameter is connected by a crossed belt with centerdistance of 45 in. Find the belt length needed to connect them.
- Q(1) :A helical compression spring is to be cycled between 150 lbf and 300 lbf with a 1-in stroke.The number of cycles is low, so fatigue is not an issue. The coil must fit in a 2.1-in diameter hole with a 0.1-in clearance all the way around the spring. Use unpeened oil tempered wire with squared and ground ends. (CLO1) (i) Determine a suitable wire diameter, using a spring index of C=7.(ii) Determine a suitable mean coil diameter.(iii) Determine the necessary spring constant.(iv) Determine a suitable total number of coils.(v) Determine the necessary free length so that if the spring were compressed to its solid length, there would be no yielding.Problem 4: A helical compression spring is to be cycled between 150 lbf and 300 lbf with a 1-in stroke. The number of cycles is low, so fatigue is not an issue. The coil must fit in a 2.1-in diameter hole with a 0.1-in clearance all the way around the spring. Use unpeened music wire with squared and ground ends. (a) Determine a suitable wire diameter, using a spring index of C = 7. (b) Determine a suitable mean coil diameter. (c) Determine the necessary spring constant. (d) Determine a suitable total number of coils. (e) Determine the necessary free length so that if the spring were compressed to its solid length, there would be no yieldingPROBLEM:1 A gas engine valve spring is to have a mean diameter of 55 mm. The maximum load it will have to sustain is 584 N with a corresponding deflection of 7.18 mm. The spring is to be made of tempered wire. Since the material is to be subjected to repeated loading and fatigue must be considered a low working stress of 650 N/mm? will be used. Find the size for wire and number of coils used. Take modulus of rigidity as 0.84 x 105 N/mm? .Assume the spring coil is squared and ground. Take shear stress Concentration factor as 1.15.