5. A fluctuating external load of Ppeak = 4500 lb is applied at the bolted joint...

50.1K

Verified Solution

Question

Mechanical Engineering

5. A fluctuating external load of Ppeak = 4500 lb isapplied at the bolted joint given in Problem 4.
(1) Find the factor n_f of safety against the fatiguefailure using the modified Goodman criterion.
(2) Find the factor n_p of safety using the proofstrength line.
(3) Find the factor n₀ of safety against jointseparation.
(4) Find the factor n of safety against yielding.
(question 4 for reference)
4. For the assembly similar to the one in Problem 3, thebolt of Â½ in-13-UNC-2A grade 8 with rolled
threads is proloaded to 80% of its proof strength. There is astatic 1500-lb load applied to the
assembly to separate the joint. It is known that k_b =1.2x10⁶ lbf/in and km = 8.4x10⁶ lbf/in
(1) Find the load factor nl.
(2) Find the factor of safety against static failure n.
(3) Find the factor of safety against joint separationn0.

Answer & Explanation Solved by verified expert

3.6 Ratings (293 Votes)

51 The stiffness constant of the joint is given byMinimum proof strength of grade 8 SAE bolts isTensile stress area of 12 in bolts isHence bolt preload See Answer

Get Answers to Unlimited Questions

Join us to gain access to millions of questions and expert answers. Enjoy exclusive benefits tailored just for you!

Membership Benefits:

Unlimited Question Access with detailed Answers
Zin AI - 3 Million Words
10 Dall-E 3 Images
20 Plot Generations
Conversation with Dialogue Memory
No Ads, Ever!
Access to Our Best AI Platform: Flex AI - Your personal assistant for all your inquiries!

Become a Member