!Required informationFor a bolted assembly with N = 6 bolts, the stiffness of each bolt is kb=1 Mlbf/in and the stiffness of the members is km =20 Mlbf/in per bolt. A repeated external load of W= 72 kips is applied to the entire joint. Assume the load is equallydistributed to all the bolts. It has been determined to use 1/2 in-13 UNC grade 8 bolts with rolled threads. Assume the boltsare preloaded to 75 percent of the proof load and the external load is a repeated load.Number of Bolts, NBolt Grade, GBolt Diameter, d6SAE 81/2 inDetermine the fatigue factor of safety for the bolts using the Goodman failure criterion.The fatigue factor of safety for the bolts using the Goodman failure criterion is

Stiffness of each bolt, kb=1 Mlbf/inStiffness of each member, km=20 Mlbf/in per boltExternal load,…

Answered: Required information For a bolted…

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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Qestion-1: A 9/16 in UNF bolt is subjected to a load P = 60 kip in a tension joint as shown in Figure. The bolt is SAE grade 5 and lubricated. The initial bolt tension (F) = 35 kip. The bolt and joint stiffnesses are k, = 6.5 and km 10.8 Mlbf/in Note: Use the related tables, formulas and concepts to answer following question (a) Formulate to determine the preload and service load stresses in the bolt. (b) Solve to find the torque necessary to develop the preload. (c) Identify if the bolt will fail or no under preload and service load stresses (Calculated in part a) by comparing with the SAE minimum proof strength of the bolt. (d) Can you identify; with given input data, tables and formulas that bolt is self-locking? Table 8-9 SAE Specifications for Steel Bolts Size SAE Range Grade Inclusive, No. in +14 1 2 4 5 5.2 7 8 TI I LI I I I +-14 8.2 -1 Minimum Proof Strength," kpsi 33 55 33 65 85 74 85 105 120 120 Table 8-2 Diameters and Area of Unified Screw Threads Size Designation 0 1 2 3 4…
For a bolted assembly, the stiffness of each bolt is ka = 700 MN/m and the stiffness of the members is km = 2100 MN/m per bolt. The joint is subject to occasional disassembly for maintenance and should be preloaded accordingly. An external load is applied to the entire joint with P = 360 kN. Assume the load is equally distributed to all the bolts. It has been determined to use M12x1.75 grade 8.8 bolts with rolled threads. (a) Determine the minimum number of bolts necessary to avoid yielding of the bolts. (b) Determine the minimum number of bolts necessary to avoid joint separation.
Find the distance ( mm ) measurement between preload and major load position of the Rockwell Hardness Number 50HRC
Design of a bolted assembly using a single M16x2 class 8.8 coarse-thread bolt has resulted in a joint where bolt stiffness is k, = 6 N/mm and the overall member stiffness - 18 N/mm. The fastener is to be reused (nonpermanent). Question 1 Value of joint stiffness constant: 0.25 4.0 0.5 0.1 Question 2 Magnitude of bolt tightening load (preload) Fi [kv]: 85 71 94 63
Pravinbhai
Mechanical design
Required 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.
The 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.
help me with number 10,12 and 13.
An A-36 steel bolt (AB) is used to snugly clamp a 6061-T6 aluminum sleeve between two rigid platens E and F, as shown below. The bolt has a solid, circular cross section with a diameter d = 61 mm and a thread pitch of 1 mm. The sleeve has a hollow circular cross section with an outer diameter do 250 mm and a wall thickness tw = 15 mm. The nut is then tightened 34 of a turn, which induces stresses in both the bolt and the sleeve. Assume Es = 200 GPa for steel and Ea 68.9 GPa for aluminum. 450 mm F A -250 mm- 500 mm 15 mm (a) Determine the normal stress in the bolt (both magnitude and sign). (b) Determine the normal stress in the sleeve (both magnitude and sign).
A joint is subject to a cyclic loading. There is an acceptable preload of 1,200 lbs, and the axial load is fully reversed with an amplitude of 1,600 lb. THe tensile bolt area is 0.160 in^2. Ignore any design factors and (take all nd=1) and assume the loads include the 1.2 bolt factor. If the joint constant is 0.25, the alternate and means axial stress for the bolt are: a) sa = 1,250 psi sm = 0 b) sa = 1,250 psi sm = 8,750 psi c) sa = 2,500 psi sm = 0 d) sa = 2,500 psi sm = 7,500 psi
The static load P= 5000 lbf is applied at I= 10 inch. The value for r=5 inch. The material for bolt is SAE grade 8. Find the size of the bolts. Assume the factor of safety for shear is 2.

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