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)

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)

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

See similar textbooks

Related questions

Q: the diagram below shows a circula bar , made of AISI 1040 OQT 1300 steel (SU = 600 MPa), is loaded…

Q: Select a standard threaded round rod to support a factored tensile load of 35 kips (service tensile…

A: Given: The fractured load, Pf = 35 kips The service load, Ps = 25 kips The yield strength of A36…

Q: What is the largest force that can be applied to the part? The largest force that can be applied is…

Q: Two 1/4 in × 8 in A36 steel plates are joined with a lap joint using 3/4 in A325-N bolts. If a…

A: Steel plates of size 14 in × 8 in of A 36 steel Ultimate tensile strength of A 36 steel is…

Q: For a bolted assembly with 8 bolts, the stiffness of each bolt is k_b = 1.1 N/mm and the stiffness…

A: Question is solved below Explanation:To find the maximum safe working load for the bolted assembly,…

Q: A course pitch metric grade 9.8 bolt with a hexagonal nut assembly is used to keep two machined…

A: Step 1: Step 2: Step 3: Step 4:

Q: Problem 3: A Hexagonal bolt connects two members. The joint has a gap 1 = 2 in and the applied load…

A: Given data: The gap (or) length of the bolt, l = 2 in Applied load, P = 2000 lb 5/16 in 18 UNC-2A…

Q: 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…

A: Step-3: kb=(153.9×7)+(115×26)153.9×115×207=653.48mMN…

Q: For a bolted assembly with four bolts, the stiffness of each bolt is kb = 3.0 MN/mm and the…

Q: repeat problem 8-19 with the bottom aluminum plate replaced by one that is 20 mm thick.

A: The total grip length is the sum of the thicknesses of the plates being clamped together. In this…

Q: = 3) A double screw (Acme thread angle o 14.5) mechanism is designed to lift a load of 18,000 lb in…

A: Since you have posted a question with multiple sub parts, we will provide the solution only to the…

Q: The two lever assembly shown below is subject to a static load F = 8250 lb. (a) identical links BD…

A: Given:

Q: Q1:Prepare a full-section assembly drawing of the four fastener assemblies shown in the Figure.…

A: To find:The clearance and the threaded holes.Consider the top view:

Q: For a bolted assembly with six bolts, the stiffness of each bolt is kb = 1.8 Mlbf/in and the…

A: If you have any doubts,do write in comments.

Q: Use LRFD and design a 13-foot-long tension member and its connection for a service dead load of 8…

A: Equilibrium is a state of a body at which there is no disturbance in a system neither inside nor…

Q: ZL.m An M8x1 bolt joins to members of 40 mm total thickness. The bolt and members are made of the…

Q: A link in a mechanism is to be subjected to a tensile force that varies from 3500 to 500 N in a…

A: Soln :- In a given problem we have a link that mechanism is subjected tesnile force which is able to…

Q: A solid square rod is cantilevered at one end. The rod is 0.6 m long and supports a completely…

A: To find:The dimension of the square cross-section.Given:The length of the rod is .The reversing…

Q: ! Required information A rectangular bar is cut from an AISI 1020 cold-drawn steel flat. The bar is…

A: Step 1:Step 2:Step 3:Step 4:

Q: A rectangular bar is cut from an AISI 1020 cold-drawn steel flat. The bar is 2.500 in wide by 4/8 in…

Concept explainers

Metrology of Screw Threads

Screw threads are a series of ridges having the profile of a helix. This helix profile runs continuously along the length of a uniform solid or a hollow bar of a circular cross-section at periodic intervals. These helix ridges are also formed over a conical bar. These continuous helical ridges are termed threads.

Question

100%

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)

Expert Solution

This question has been solved!

Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.

This is a popular solution!

SEE SOLUTION Check out a sample Q&A here

Step 1

VIEW

Step 2

VIEW

Step 3

VIEW

Trending now

This is a popular solution!

Step by step

Solved in 3 steps

SEE SOLUTION Check out a sample Q&A here

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

(P7-15) A certain application calls for a non- lubricated M36 x 4 ISO 8.8 threaded fastener to be torqued to 100% of proof load. Find this torque. At assembly, a cadmium-plated fastener was installed using the specified torque. What are the likely consequences of this error? T= T≤ 3385N-M = 673 mite
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.
Required information A solid square rod is cantilevered at one end. The rod is 0.6 m long and supports a completely reversing transverse load at the other end of ±1.7 kN. The material is AISI 1080 hot-rolled steel. If the rod must support this load for 5 x 104 cycles with a design factor of 1.5, what dimension should the square cross section have? Neglect any stress concentrations at the support end. What will the strength of the metal be at 5 x 104 cycles? The strength of the metal at 5 x 104 will be MPa.
A rigid coupling with 30 inches of bolt circle diameter transmits a torque of 18,000 lb-in. The coupling material has a yield strength of 90,000 psi. The coupling is fastened by six bolts. Assume design factor of N=3 Calculate the diameter of each bolt.