SHIGLEY'S MECH.ENGIN....(LOOSE)>CUSTOM<
10th Edition
ISBN: 9781260163155
Author: BUDYNAS
Publisher: MCG CUSTOM
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 17, Problem 33P
To determine
The optimal solution for the number of rope, to meet a fatigue factor of safety.
The diameter in terms of fatigue factor of safety
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
A polyamide A-3 flat belt 6 in wide is used to transmit 15 hp under light shock conditions where Ks= 1.25, and a factor of safety equal to or greater than 1.1 is appropriate. The pulley rotational axesare parallel and in the horizontal plane. The shafts are 8 ft apart. The 6-in driving pulley rotates at1750 rev/min in such a way that the loose side is on top. The driven pulley is 18 in in diameter. Thecoefficient of friction is 0.8. Analyze the centrifugal tension Fc and the torque T.?
The preliminary design of a large shaft connecting a motor with agenerator requires the use of a hollow shaft with inside and outside diameters4 in. and 6 in., respectively. Taking a safety factor of 2.5 andknowing that the shear resistance is 14 ksi, determine the maximumtorque that can be transmitted by the shaft as designed
A steel shaft 100mm in diameter is loaded and support in shaft bearing 0.4m apart. The shaft carries three loads: first mass 12kg at the centre, second mass 10kg at a distance 0.12m from the left bearing and third mass of 7kg at a distance 0.09m from the right bearing. Find the value of the critical speed by using Dunker ley’s method if E = 2X1011N/m2.
Chapter 17 Solutions
SHIGLEY'S MECH.ENGIN....(LOOSE)>CUSTOM<
Ch. 17 - Example 17-2 resulted in selection of a 10-in-wide...Ch. 17 - A 6-in-widc polyamide F-l flat belt is used to...Ch. 17 - Prob. 3PCh. 17 - A flat-belt drive is to consist of two...Ch. 17 - In solving problems and examining examples, you...Ch. 17 - Return to Ex. 17-1 and complete the following. (a)...Ch. 17 - Prob. 7PCh. 17 - Prob. 8PCh. 17 - Prob. 9PCh. 17 - Two shafts 20 ft apart, with axes in the same...
Ch. 17 - Prob. 11PCh. 17 - Prob. 12PCh. 17 - A designer has to select a metal-belt drive to...Ch. 17 - Prob. 14PCh. 17 - Prob. 15PCh. 17 - Prob. 16PCh. 17 - Prob. 17PCh. 17 - Two B85 V belts are used in a drive composed of a...Ch. 17 - Prob. 19PCh. 17 - Prob. 20PCh. 17 - The geometric implications of a V-flat drive are...Ch. 17 - A 2-hp electric motor running at 1720 rev/min is...Ch. 17 - The standard roller-chain number indicates the...Ch. 17 - Prob. 24PCh. 17 - A double-strand no. 60 roller chain is used to...Ch. 17 - A four-strand no. 40 roller chain transmits power...Ch. 17 - Prob. 27PCh. 17 - Prob. 28PCh. 17 - Prob. 29PCh. 17 - Prob. 30PCh. 17 - Prob. 31PCh. 17 - Prob. 32PCh. 17 - Prob. 33PCh. 17 - For Prob. 17-29 estimate the elongation of the...
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.Similar questions
- (13) A spring has an overall length of 44.0in & sustains a load of 15,000lb @ its center. The spring has three full-length leaves & 15 graduated leaves with a central band 4.0in wide. All leaves are to be stressed to 60,000psi when fully loaded. The ratio of total spring depth to width is to be approximately 2.0. Determine: (a) the width & thick ness of the leaves; (b) the initial space that must be provided between the full length & the graduated leaves before the band is applied; (c) What load is exerted on the band after the spring is assembled?arrow_forwardA semi-elliptic spring used for automobile suspension, consists of two extra full-length leaves and eight graduated-length leaves, including the master leaf. The centre-to centre distance between the two eyes is 1 m. The leaves are made of steel 55Si2Mo90 (Syt = 1500 N/mm2and E = 207000 N/mm2) and the factor of safety is 2. The maximum spring load is 30 kN. The leaves are pre- stressed so as to equalize stresses in all leaves under maximum load. Determine the dimensions of the cross-section of the leaves and the deflection at the end of the spring.arrow_forwardA vertical shaft is supported by two deep groove ball bearings as shown below. The shaft will be driven by vee belts through a pulley. The combined tensions of the belt apply and the weight of the pulley assembly applies a force of 5.4kN and 900N respectively. The shaft has a diameter of 32mm. Bearing A at the top supports the shaft radially whereas bearing B at the bottom supports the shaft axially and radially. Two deep groove ball bearings have been selected for this application. The models of the bearings are SKF 6305 and SKF 6205 for bearing A and B respectively. a) What are the forces at bearing A and B? b) Paste a screenshot of the graph showing the distribution of the forces in the shaft. c) From the report, find the static load capacity for: Bearing A Bearing Barrow_forward
- A semi-elliptic spring used for automobile suspension, consists of twoextra full-length leaves and eight graduated-length leaves, including themaster leaf. The centre-to-centre distance between the two eyes is 1 m.The leaves are made of steel 55Si2Mo90 (S = 1500 N/mm yt2 andE = 207 000 N/mm2) and the factor of safety is 2. The maximum springload is 30 kN. The leaves are pre-stressed so as to equalize stresses in allleaves under maximum load. Determine the dimensions of thecross-section of the leaves and the deflection at the end of the spring.arrow_forwardA spring has a load of 50 lb with a spring index of 8. If the induced stress is 90ksi, determine the wire diameter.arrow_forwardCompute the minimum vine diameter to provide a desired factor of safety of 1.7 against yield-type failure. Assume a yield stress of 300 MPa, and that the mass of the monkey is 65 kg. Hint Weight (N) = Mass (Kg) X g (9.81 m/s2)arrow_forward
- A polyamide F-0 flat belt 80mm wide is used to transmit 5 kW under light shock conditions where Ks = 1.25, and a factor of safety equal to or greater than 1.1 is appropriate. The pulley rotational axes are parallel and in the horizontal plane. The shafts are 8mm apart. The 50 mm driving pulley rotates at 1750 rev/min in such a way that the loose side is on top. The driven pulley is 50 mm in diameter. The factor of safety is for unquantifiable exigencies. (a) Estimate the centrifugal tension Fc and the torque T. (b) Estimate the allowable F1, F2, Fi and allowable power Ha . (c) Estimate the factor of safety. Is it satisfactory?arrow_forwardA load P is supported by two springs arranged in series. The upper spring has 20 turns of 19 mm diameter wire on a mean diameter of 150 mm. The lower spring consists of 15 turns of 12 mm diameter wire on a mead diameter of 125 mm. Determine the spring index of the lower spring in MPa if the total deformation is 76 mm and G of 83 GPa.arrow_forwardDetermine the minimum force required to deflect the spring with spring constant of 251 N/mm to a displacement of 5 mm.arrow_forward
- A 6-in-wide polyamide F-1 flat belt is used to connect a 4-in-diameter pulley to drive a larger pulley with an angular velocity ratio of 3. The center-to-center distance is 8 ft. The angular speed of the small pulley is 1850 rev/min as it delivers 2 hp. The service is such that a service factor Ks of 1.25 is appropriate. (a) Find Fc, Fi, F1a, and F2. (b) Find Ha, nfs, and belt length. (c) Find the dip.arrow_forwarda helical compression spring with squared and ground ends is made of shot-peened astm a232 spring wire with presetting(G=79 GPa) . It is used to control a cyclic dynamic load that varies between 562 and 0 N. if a saftey factor of 1.12 is used, determine the allowable shear stress for a design cinsideration of infinite fatigue lifearrow_forwardThe specifications for a coil spring are known. Infinite fatigue life is required, using a safety factor of 1.3 applied to the maximum load only. The fatigue strength can be represented by a line between τmax= 600, τmin= 0 and τmax= τmin= 900 MPa.Assume both end plates are in contact with nearly a full turn of wireand that the end plate loads coincide with the spring axis.Determine a suitable combination of d, D, and N, if C = 8arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- International Edition---engineering Mechanics: St...Mechanical EngineeringISBN:9781305501607Author:Andrew Pytel And Jaan KiusalaasPublisher:CENGAGE L
International Edition---engineering Mechanics: St...
Mechanical Engineering
ISBN:9781305501607
Author:Andrew Pytel And Jaan Kiusalaas
Publisher:CENGAGE L
Ch 2 - 2.2.2 Forced Undamped Oscillation; Author: Benjamin Drew;https://www.youtube.com/watch?v=6Tb7Rx-bCWE;License: Standard youtube license