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
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Chapter 8, Problem 22P
To determine
The coarse thread metric bolt.
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A 3/8-18 grade 8 bolt has 800 pounds of force
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3. An M16 x 2 bolt with a slotted hex nut is used to clamp together two 25 mm steel plates. The joint
is assembled with a size 16 N washer underneath the bolt head. The bolt is a 5.8 class metric grade,
with a proof strength of 380 MPa. The joint is intended to be permanent. Determine a suitable length
for the bolt, rounded up to the nearest standard size in millimeters. Calculate the bolt stiffness, the
elongation of the bolt after the necessary preload is developed, and the bolt torque required to apply
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steel, use E = 207 GPa.
Standard threaded fastener lengths, dimensions of hexagonal nuts, and dimensions of metric plain
washers are provided in the textbook appendices.
A 3-in Aluminum plate and a 2-in cast-iron plate are compressed with one bolt and nut. The bolt
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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
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- A bolted joint is to have a grip consisting of two 14-mm steel plates and one 14R metric plain washer to fit under the head of the M14 x 2 hex-head bolt, 50 mm long. (Hint: Look up table A-31 and A-33 in the textbook of Shigley's Mechanical Engineering Design, 8th Edition) (a) What is the length of the thread LT for this diameter metric coarse-pitch series bolt? (b) What is the length of the grip l? (c) What is the height H of the nut? (d) Is the bolt long enough? If not, round to the next larger preferred length. (e) What is the length of the shank and the threaded portions of the bolt within the grip?arrow_forward.A special C-clamp uses a 0.5-inch diameter Acme thread and a collar of 0.625-inch effective mean diameter. Estimate the force required at the end of a 5-in. handle to develop a 200 lb clamping force. 目 12 im. Aeme thread d-58 inarrow_forwardRequired information For a bolted assembly with six bolts, the stiffness of each bolt is kb 2 Mibf/in and the stiffness of the members is km = 13 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. It is desired to find the range of torque that a mechanic could apply to initially preload the bolts without expecting failure once the joint is loaded. Assume a torque coefficient of K = 0.2. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the maximum bolt preload that can be applied without exceeding the proof strength of the bolts once the load is applied. The maximum bolt preload that can be applied is Ibf.arrow_forward
- 1. A jack having square threads of 50 mm nominal diameter and 10 mm pitch is supporting a load of 89 kN. A double thread is used and the coefficient of friction maybe as low as 0.10 or as high as 0.15.a. Will this screw always self-locking?b. What is the highest torque necessary to raise the load?arrow_forwardTwo identical aluminum plates are each 3 in thick, and are compressed with one bolt and nut. Washers are used under the head of the bolt and under the nut. Washer properties: steel; ID = 0.531 in; OD = 1.062 in; thickness = 0.095 in Nut properties: steel; height = 7/16 in Bolt properties: 1/2 in-13 UNC grade 8 Plate properties: aluminum; E = 10.3 Mpsi; Su = 47 kpsi; Sy = 25 kpsi (a) Determine a suitable length for the bolt, rounded up to the nearest 1/4 in. (b) Determine the bolt stiffness. (c) Determine the stiffness of the members.arrow_forward2- In the shown connection, the coefficient of friction is 0.05. Calculate the minimum allowable tightening torque to carry the load F=1000N. If high tensile bolt 9.8, calculate the design factor of safety. 30 mm 16 mm 16 mm 6 mm bolt M10x1.5 16 mm 16 mm + 6 mm Farrow_forward
- A. PROBLEM ON TOPIC "KEYS AND COUPLINGS": A coupling with material AISI C1045 as rolled transmits 65.5 HP at 1750 rpm. The material of the 1.75 inch shaft... is also AISI C1045 as rolled and the key is cold drawn AISI C1020. N= 2.5. Determine the following: 1. Size of bolt (dia.) if there are 6 bolts made of AISI C1045 as rolled at a bolt circle of 5 inches. Note: Select standard bolt diameter from AT14 of DOME by Faires (see Lecture on fasteners for this Table) Calculated Dia: Standard Size to use: 2. Required b and t if a flat or rectangular key is used: Answer: 3. Required length of key, if a flat or rectangular key is used: Note: Calculate for two type of stresses on key, then select your answer. Length Based on shear length Based on compression: Length to use: 4. Required bif a square key is used: Answer: 5. Required length of key, if a square key is used: Note: Calculate for two type of stresses on kev, then select your answer. Length Based on shear length Based on compression:…arrow_forwardIn a bolted joint two smooth members are connected with an axial tightening force of 2200 N. If the bolt used has metric threads of 4 mm pitch, the torque required for achieving the tightening force isarrow_forwardDeeith a bolt spacing and gage distance of 0.6br is critical for prying action if the holt tension force is 85% of its capacity. Use LRFD.arrow_forward
- 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.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_forward1. For a bolted assembly with six bolts, the stiffness of each bolt is k, = 3 Mlbf/in and the stiffness of the members is km = 12 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 a torque co-efficient of K = 0.2. a. Determine the maximum bolt preload that can be applied without exceeding the proof strength of the bolts. b. Determine the minimum bolt preload that can be applied while avoiding joint separation. c. Determine the value of torque in units of Ibf-ft that should be specified for preloading the bolts if it is desired to preload to 75% of the proof load. d. Determine the yielding factor of safety for part c). (based on proof strength)arrow_forward
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