Two plates are clamped by a 3/4-10 UNC SAEGrade 5 bolt and regular nut with a 3/4-W plainwasher as shown in figure. Top plate is made ofgrey cast iron and bottom plate is steel. An axialforce of 12kN is acted upon the joint. Round offthe length of the bolt to nearest 1/4in. Assumebolts are preloaded to 75% of proof load.1. Determine the bolt stiffness kb.2. Determine the member stiffness km.3. Determine the yielding factor of safety of thebolt.4. Determine the load factor for the bolt.5. Determine the load factor guarding againstjoint separation.1.25 in1.00 in

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Answered: Two plates are clamped by a 3/4-10 UNC…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A 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.
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 the preload. Assume that coefficients of friction between the bolt, nut, and collar are all ~0.15. For 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.
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An M 14 x 2 hex-head bolt with a nut and a 14R washer under each of bolt head and the nut is used to clamp together two 18-mm steel plates. NOTE: This is a multi-part question. Once an answer is submitted, you will be unable to return to this part. Determine the bolt stiffness. The bolt stiffness kb is 592.69 MN/m.
Agui - 4550/2 =2276 two plates each with thickness t - 16 mm are bolted together with 6-222 mndia. bolts firming alap Joint Bolt spacing are follows St- $40mm S2 - 80mm, S3=150mm effective bolt hole dia. is 25mm A36 is used. Compute the allowable tensile Strength P t = 16 mm &t 52 747₁ 0 O O 40 60 80 40 +=16mm S-400 $3-100 S2-40 7 @ 4umm P
1. 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)
As 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. 3/4
M16 x 2.0 ISO 5.8 coarse series bolts and nuts clamp a 26-mm-thick steel cover plate to a 6-mm-thick steel flange. Steel washers (Size: 16R) are used under the head of the bolt and also under the nut . Assume E = 207 GPa- (a) Determine a suitable length for the bolt, rounded up to the nearest 5 mm. (b) Determine the bolt stiffness. (c) Determine the stiffness of the members. (d) Determine the stiffness of the joint.
A 2.5-in Aluminum plate and a 1.5-in cast-iron plate are compressed with one bolt and nut. The bolt is 3/8 in-16 UNC. (1) Determine a suitable length for the bolt, rounded up to the nearest 4 in. (2) Determine the bolt stiffness ks. (3) Determine the stiffness of the members km.
2. A screw clamp shown in the figure has a horizontal handle with diameter 3/8-in made of cold-drawn AISI 1006 steel. The overall length of the handle is 4.25 in. The screw is single-threaded, 3/4 in-10 UNC, and is 8 in long, overall. a. What screw torque will cause the horizontal handle to bend permanently? b. What clamping force will the answer to part a) cause if the collar friction is neglected and if the thread friction is 0.15? Hint: 1) Assume a force Fis applied at the end of the handle. Think about how this force affects the screw vs. how it affects the handle. 2) Consider in which direction the screw is "raised". - 4.25 in

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