Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering)
10th Edition
ISBN: 9780073398204
Author: Richard G Budynas, Keith J Nisbett
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Concept explainers
Question
Chapter 8, Problem 42P
To determine
The yielding factor of safety.
The load factor.
The joint separation factor.
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solutionStudents have asked these similar questions
34 in
3. The following data apply to the C-clamp:
a. The screw is ACME with ¾" Diameter
b. Coefficient of thread friction = 0.12
c. Coefficient of collar friction = 0.23
d. Mean collar radius = 0.55 in.
e. Max. clamping force = 1000 lb
Determine:
The tightening torque
The operator force at the end of the handle
(Note: Use table 8-3 to determine the screw pitch (p))
Problem 3: A Hexagonal bolt connects two members. The joint has a gap 1 = 2 in and the applied
load is 2000 lb. Both of the clamped parts are steel. A preload of 90% the bolt's proof
strength will be applied first. For this design, an SAE grade 1, 5/16"-18 UNC-2A bolt
is chosen made from A307 with rolled threads. Washers are included between the head
and the joint, and between the nut and the joint. Determine a suitable length for the
bolt? Find its safety factor against yielding and against joint separation. Are these
values acceptable?
For a bolted assembly with 8 bolts, the stiffness of
each bolt is k_b = 1.1 N/mm and the stiffness of the
members is k_m = 2.8 N/mm at each bolt location. The
joint is subject to occasional disassembly for
maintenance and should be preloaded accordingly (to
75% of the proof stress). Assume the external load is
equally distributed to all the bolts. It has been
determined to use M6 × 1 class 5.8 bolts with rolled
threads.
Determine the maximum safe working load that both
limits the stress in the bolts to be below the proof
stress and ensures that the members do not come out
of compression.
Express your answer in units of kilonewtons.
Chapter 8 Solutions
Shigley's Mechanical Engineering Design (McGraw-Hill Series in Mechanical Engineering)
Ch. 8 - A power screw is 25 mm in diameter and has a...Ch. 8 - Using the information in the footnote of Table...Ch. 8 - Show that for zero collar friction the efficiency...Ch. 8 - A single-threaded power screw is 25 mm in diameter...Ch. 8 - The machine shown in the figure can be used for a...Ch. 8 - The press shown for Prob. 8-5 has a rated load of...Ch. 8 - For the screw clamp shown, a force is applied at...Ch. 8 - The C clamp shown in the figure for Prob. 8-7 uses...Ch. 8 - Find the power required to drive a 1.5-in power...Ch. 8 - A single square-thread power screw has an input...
Ch. 8 - Prob. 11PCh. 8 - An M14 2 hex-head bolt with a nut is used to...Ch. 8 - Prob. 13PCh. 8 - A 2-in steel plate and a 1-in cast-iron plate are...Ch. 8 - Repeat Prob. 8-14 with the addition of one 12 N...Ch. 8 - A 2-in steel plate and a 1-in cast-iron plate are...Ch. 8 - Two identical aluminum plates are each 2 in thick,...Ch. 8 - Prob. 18PCh. 8 - A 30-mm thick AISI 1020 steel plate is sandwiched...Ch. 8 - Prob. 20PCh. 8 - Prob. 21PCh. 8 - Prob. 22PCh. 8 - A 2-in steel plate and a 1-in cast-iron plate are...Ch. 8 - An aluminum bracket with a 12-in thick flange is...Ch. 8 - An M14 2 hex-head bolt with a nut is used to...Ch. 8 - A 34 in-16 UNF series SAE grade 5 bolt has a 34-in...Ch. 8 - From your experience with Prob. 8-26, generalize...Ch. 8 - Prob. 28PCh. 8 - Prob. 29PCh. 8 - Prob. 30PCh. 8 - For a bolted assembly with eight bolts, the...Ch. 8 - Prob. 32PCh. 8 - 8-33 to 8-36 The figure illustrates the...Ch. 8 - 8-33 to 8-36 The figure illustrates the...Ch. 8 - 8-33 to 8-36 The figure illustrates the...Ch. 8 - 8-33 to 8-36 The figure illustrates the...Ch. 8 - Prob. 37PCh. 8 - Prob. 38PCh. 8 - 837 to 840 Repeat the requirements for the problem...Ch. 8 - Prob. 40PCh. 8 - 841 to 844 For the pressure vessel defined in the...Ch. 8 - Prob. 42PCh. 8 - Prob. 43PCh. 8 - Prob. 44PCh. 8 - Bolts distributed about a bolt circle are often...Ch. 8 - The figure shows a cast-iron bearing block that is...Ch. 8 - Prob. 47PCh. 8 - Prob. 48PCh. 8 - Prob. 49PCh. 8 - Prob. 50PCh. 8 - 851 to 854 For the pressure cylinder defined in...Ch. 8 - Prob. 52PCh. 8 - 851 to 854 For the pressure cylinder defined in...Ch. 8 - 851 to 854 For the pressure cylinder defined in...Ch. 8 - 855 to 858 For the pressure cylinder defined in...Ch. 8 - 855 to 858 For the pressure cylinder defined in...Ch. 8 - 855 to 858 For the pressure cylinder defined in...Ch. 8 - For the pressure cylinder defined in the problem...Ch. 8 - A 1-in-diameter hot-rolled AISI 1144 steel rod is...Ch. 8 - The section of the sealed joint shown in the...Ch. 8 - Prob. 61PCh. 8 - Prob. 62PCh. 8 - Prob. 63PCh. 8 - Prob. 64PCh. 8 - Using the Goodman fatigue criterion, repeat Prob....Ch. 8 - The figure shows a bolted lap joint that uses SAE...Ch. 8 - Prob. 67PCh. 8 - A bolted lap joint using ISO class 5.8 bolts and...Ch. 8 - Prob. 69PCh. 8 - The figure shows a connection that employs three...Ch. 8 - A beam is made up by bolting together two cold...Ch. 8 - Prob. 72PCh. 8 - Prob. 73PCh. 8 - Prob. 74PCh. 8 - A vertical channel 152 76 (see Table A7) has a...Ch. 8 - The cantilever bracket is bolted to a column with...Ch. 8 - Prob. 77PCh. 8 - The figure shows a welded fitting which has been...Ch. 8 - Prob. 79PCh. 8 - Prob. 80PCh. 8 - Prob. 81P
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
- The cantilever bracket Is bolted to a column with three M12 x 1.75 ISO 5.8 bolts. The bracket Is made from AISI 1020 hot- rolled steel. Assume the bolt threads do not extend into the Joint. Find the factors of safety for the following fallure modes: shear of bolts, bearing of bolts, bearing of bracket, and bending of the bracket. GIVE the overall jolnt factor of safety. Given: F= 2 KN. NOTE: This is a multi-part questlon. Once an answer Is submitted, you will be unable to return to this part. Holes for M12 x 1.75 bolts 8 mm thick 36 32 36 - 200- Column Find the factor of safety with respect to the shear stress In the bolts. The factor of safety with respect to the shear stress In the bolts ng Is 4.4arrow_forwardThe figure illustrates the connection of a steel cylinder head to a grade 30 cast-iron pressure vessel using N bolts. A confined gasket seal has an effective sealing diameter D. The cylinder stores gas at a maximum pressure pg. For the specifications given in the table for the specific problem assigned, select a suitable bolt length from the preferred sizes in Table A–17, then determine the yielding factor of safety np, the load factor nL, and the joint separation factor n0. See problem number 8-36, and please use the FEA exponential curve-fit for member stiffness.arrow_forwardThe figure shows a section of a large coupling. Each bolt in this joint is subjected to cyclic load fluctuating between 0 and 13 kN. The members are made from steel. The members have equal thicknesses and total length of members is L=37 mm. Each bolt is initially tightened carefully to 78% of proof load. The bolt is to be Metric grade 5.8 M12x1.75 (coarse-pitch series). The threads has been manufactured by rolling and reliability for bolts is 95%. Calculate the stiffness of the bolt (in kN/mm). Yanıt:arrow_forward
- 4) An electric motor purchased by your employer surprisingly arrived without a keyway in the shaft. The motor has power rating of 7.5kW & 1,800rpm & has a shaft of 17mm. It will be used to drive a centrifugal pump using cast iron sheave. Design the square key to be used in the assembly based on maximum bearing & shearing stresses of 580MPa & 370MPa, respectively, and factor of safety of 5.arrow_forwardFor a bolted assembly with six bolts, the stiffness of each bolt is kb = 2.8 Mlbf/in and the stiffness of the members is km= 14 Mlbf/in per bolt. An external load of 80 kips is applied to the entire joint. Assume the load is equally distributed to all the bolts. It has been determined to use 1/2 in-13 UNC grade 8 bolts with rolled threads. Assume the bolts are preloaded to 75 percent of the proof load. Determine the yielding factor of safety. The yielding factor of safety isarrow_forwardThe figure illustrates the nonpermanent connection of a steel cylinder head to a grade 30 cast-iron pressure vessel using 73 bolts. A confined gasket seal has an effective sealing diameter D of 0.9 m. The cylinder pressure is cycled between a minimum pressure of zero and a maximum pressure pg of 535 kPa. For the specifications given in the table for the specific problem assigned, select a suitable bolt length from the preferred sizes. Use Table A-17 for calculation purposes. Parameter Value Head thickness, A Cylinder thickness, B Internal diameter of the cylinder, C Gasket sealing diameter, D Bolt circle diameter, E Outer diameter of the cylinder head, 16 mm 25 mm 0.8 m 0.9 m 1.0 m 1.1 m F Bolt grade ISO 10.9 Bolt diameter, d 10 mm NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Find a suitable bolt length. Then, determine the bolt stiffness, material stiffness, and stiffness constant of the joint. The bolt length is 50 mm.…arrow_forward
- Calculate the maximum tensile stress developed in a 1/4-20 bolt (Major dia = 0.2500" and Root dia = 0.1959"), 3" long, and a head height of 0.1875", if it is subjected to a load of 426 lbs.arrow_forwardRB&W¹1 recommends turn-of-nut from snug fit to preload as follows: 1/3 turn for bolt grips of 1-4 diameters, 1/2 turn for bolt grips 4-8 diameters, and 2/3 turn for grips of 8-12 diameters. These recommendations are for structural steel fabrication (permanent joints), producing preloads of 100 percent of proof strength and beyond. Machinery fabricators with fatigue loadings and possible joint disassembly have much smaller turns-of-nut. The RB&W recommendation enters the nonlinear plastic deformation zone. The figure shows a cross section of a grade 25 cast-iron pressure vessel, with a torque factor K of 0.09. Use Eq. (8-27) to estimate the torque necessary to establish the desired preload given that preload F; = 14.4 kip, bolt stiffness kb = 5.21 x 106 lbf/in, number of threads N = 11, and material stiffness km = 8.95 × 106 lbf/in. in-11 UNCX 2+ in grade 5 finished hex head bolt in No. 25 CI Determine the torque necessary to establish the desired preload and the turn of the nut in…arrow_forwardRB&W11 recommends turn-of-nut from snug fit to preload as follows: 1/3 turn for bolt grips of 1-4 diameters, 1/2 turn for bolt grips 4-8 diameters, and 2/3 turn for grips of 8-12 diameters. These recommendations are for structural steel fabrication (permanent joints), producing preloads of 100 percent of proof strength and beyond. Machinery fabricators with fatigue loadings and possible joint disassembly have much smaller turns-of-nut. The RB&W recommendation enters the nonlinear plastic deformation zone. The figure shows a cross section of a grade 25 cast-iron pressure vessel, with a torque factor K of 0.09. Use Eq. (8-27) to estimate the torque necessary to establish the desired preload given that preload F;= 14.4 kip, bolt stiffness kb = 5.21 x 106 lbf/in, number of threads N=11, and material stiffness km = 8.95 × 106 lbf/in. in-11 UNCX 2 in grade 5 finished hex head bolt in in 162 No. 25 CI Determine the torque necessary to establish the desired preload and the turn of the nut in…arrow_forward
- Required information For a bolted assembly with eight bolts, the stiffness of each bolt is kb = 0.8 MN/mm and the stiffness of the members is km = 2.6 MN/mm per bolt. The joint is subject to occasional disassembly for maintenance and should be preloaded accordingly. Assume the external load is equally distributed to all the bolts. It has been determined to use M6 x 1 class 5.8 bolts with rolled threads. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the maximum external load Pmax that can be applied to the entire joint without causing the members to come out of compression. The maximum external load for this case is 0.15625 N.arrow_forwardAs shown in figure below, two plates are clamped by washer-faced 2 in-20 UNF SAE grade 5 bolts each with a standard 2 N steel plain washer. The top plate is steel and the bottom pplate is gray cast iron. If a total of 8 bolts where used to close 1 feet diameter pipe which applied at maximum pressure of 150 psi. Calculate the static and fatigue safety factor of this joint. Used Goodman theory for tha fatigue safety 1/2 factor. 3/4arrow_forwardA 3-in Aluminum plate and a 2-in cast-iron plate are compressed with one bolt and nut. The bolt is 7/8 in-9 UNC. (1) Determine a suitable length for the bolt, rounded up to the nearest in. (2) Determine the bolt stiffness. (3) Determine the stiffness of the members.arrow_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
Engineering Basics - Statics & Forces in Equilibrium; Author: Solid Solutions - Professional Design Solutions;https://www.youtube.com/watch?v=dQBvQ2hJZFg;License: Standard YouTube License, CC-BY