Machine Elements in Mechanical Design (6th Edition) (What's New in Trades & Technology)
6th Edition
ISBN: 9780134441184
Author: Robert L. Mott, Edward M. Vavrek, Jyhwen Wang
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Concept explainers
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
The machine is designed to be powered by a 100 HP electric motor at a speed of 1500 rpm, with standard D-120 V-belts. The pitch diameter of the smaller sheave is 101.6 mm and the bigger sheave is 406.4 mm. Service factor is 1.25. Use length of D-120 V-belt equal to 123.3 inches. Determine the center distance between sheaves in mm; the arc of contact in deg; and the design in HP.
Q1) A V-belt drive consists of three V-belts in parallel on grooved pulleys of the
same size. The angle of groove is 30° and the coefficient of friction 0.12. The
cross-sectional area of each belt is 800 mm² and the permissible safe stress in
the material is 3 MPa. Calculate the power that can be transmitted between two
pulleys 400 mm in diameter rotating at 960 rpm.
The width of the belt used if its thickness is 6 mm.
Ans. 261 mm
8. A nylon-core flat belt has an elastomer envelop; is 200 mm wide, and transmits 60 KW at a belt speed
of 25 m/s. The belt has a mass of 2 kg/m of the belt length. The belt is used in a crossed configuration to
connect a 300 mm diameter driving pulley to a 900 mm diameter driven pulley at a shaft spacing of 6 m.
A. Calculate the belt length and the angles of wrap. Ans. 13.95 m, 3.34 rad or 191.4°
B. Compute the belt tensions based on a coefficient of friction of 0.33. Ans. 1.76 KN, 1.96 KN
Chapter 7 Solutions
Machine Elements in Mechanical Design (6th Edition) (What's New in Trades & Technology)
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
- Q 16- Find the length of a belt necessary to drive a pulley of 80 cm diameter running parallel at a distance of 12 m from the driving pulley of 480 cm diameter ?arrow_forwardUse the drawing below to answer the following two questions. a. Determine the equivalent spring stiffness of the following system. Simplify the expression (ie – single common denominator. Your answer should be an expression of just K’s – no numbers). b. If the weight on top is 20 lb and the K1 = K4 = 50 lb/in, K2 = 33 lb/in and K3 = K5 = 25 lb/in, what is the natural frequency of the system?arrow_forwardA 3/8 inch flat leather belt is 12 inch wide and is used on a 24 inch diameter pulley rotating at 600 rpm. The specific weight of the belt is 0.035 lb/in3. The angle of contact is 1500. If the coefficient of friction is 0.3 and the allowable stress is 300 psi, how much hp can it transmit?arrow_forward
- A 3/8-18 grade 8 bolt has 800 pounds of force pulling on it. Find the tensile force, the thread stripping strength for the needed length of engagement and the factor of safety for the bolt with that amount of force.arrow_forwardA series of three links is given with lengths of 2.4 ", 7.2" and 3.4 ", select the length of a fourth link, that when assembling the mechanism one of the links can be driven by a motor that rotates continuously. Mechanism is according to Grashoff, show all your operations to justify your resultsarrow_forwardA belt drive consists of a flat belt stretched between two pulleys of equal diameter, 400mm, as shown in Figure Q1(a). The belt drive transmits a power of 250 W when the pulleys rotate at 150 rpm. The coefficient of friction between the belt and the pulley is 0.3. 400 mm Figure Q1(a) a) What is the value of the belt speed? b) What is the value of the effective tension transmitting power, T1-T2? c) What is the value of the ratio between the tight and slack tension, T1/T2? d) Use your answers to (b) and (c) to compute the individual values of T1 and T2. The belt has a density of 0.005 kg/cm3 and has a rectangular cross-section with width 5 cm and thickness 0.8 cm. The belt's maximum allowed stress is 50 N/cm2. e) Does the belt exceed its maximum allowed stress? Justify your answer.arrow_forward
- A bolt with a square threaded screw has mean diameter of 25 mm and a pitch of 3 mm. It carries an axial thrust of 10 kN on the bolt head of 25 mm mean radius. If u = 0.12, find the force required at the end of a spanner 450 mm long, in tightening up the bolt. 3. [Ans. 110.8 N] A turn buckle with right and left hand threads is used to counle twvo railway coaches The threadsarrow_forwardWhat weight (kg) can be lifted by a double threaded screw that has an efficiency of 85% if it is opetated by a 52 lb force at the end of a 25 inches lever ?The pitch of the screw is 0.55 inchesarrow_forwardOne flange is attached to four 5x8 grade and M16 bolt connections with a total preload force of 80,000 N Calculate the factor of the boltarrow_forward
- A shaft turning 200 RPM is to drive another shaft at 250 RPM connected in open belt. Find the diameters of the two pulleys, using integral number of inches for each diameter, to give as nearly as possible a belt speed of 3500 FPM.arrow_forwardThe marble tiling machine is designed to be powered by a 150 hp electric motor at a speed of 1700 rpm, with standard D-120 V-belts. The pitch diameter of the smaller sheave is 152 mm and the bigger sheave is 338 mm. Service factor is 1.2. Determine the arc of contact on the smaller sheave if the length of belt is 3131.82 mm.arrow_forwardA 5/8 inch diameter double-thread Acme power screw with a thread coefficient of friction of 0.1 is being used to raise a load of 2,404 Ib. How much does the load move in inches to two decimal places during one full revolution of the power screw ? Selected Answer: 0.08 Correct Answer: 0.25 0.01arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
- Elements Of ElectromagneticsMechanical EngineeringISBN:9780190698614Author:Sadiku, Matthew N. O.Publisher:Oxford University PressMechanics of Materials (10th Edition)Mechanical EngineeringISBN:9780134319650Author:Russell C. HibbelerPublisher:PEARSONThermodynamics: An Engineering ApproachMechanical EngineeringISBN:9781259822674Author:Yunus A. Cengel Dr., Michael A. BolesPublisher:McGraw-Hill Education
- Control Systems EngineeringMechanical EngineeringISBN:9781118170519Author:Norman S. NisePublisher:WILEYMechanics of Materials (MindTap Course List)Mechanical EngineeringISBN:9781337093347Author:Barry J. Goodno, James M. GerePublisher:Cengage LearningEngineering Mechanics: StaticsMechanical EngineeringISBN:9781118807330Author:James L. Meriam, L. G. Kraige, J. N. BoltonPublisher:WILEY
Elements Of Electromagnetics
Mechanical Engineering
ISBN:9780190698614
Author:Sadiku, Matthew N. O.
Publisher:Oxford University Press
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:9780134319650
Author:Russell C. Hibbeler
Publisher:PEARSON
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:9781259822674
Author:Yunus A. Cengel Dr., Michael A. Boles
Publisher:McGraw-Hill Education
Control Systems Engineering
Mechanical Engineering
ISBN:9781118170519
Author:Norman S. Nise
Publisher:WILEY
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:9781337093347
Author:Barry J. Goodno, James M. Gere
Publisher:Cengage Learning
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:9781118807330
Author:James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:WILEY
Power Transmission; Author: Terry Brown Mechanical Engineering;https://www.youtube.com/watch?v=YVm4LNVp1vA;License: Standard Youtube License