This article is rated B-class on Wikipedia's
content assessment scale. It is of interest to the following WikiProjects: | |||||||||||||||||||||||||
|
I believe the illustrated explanation is oversimplified. It is true that a bolted joint is surprisingly counterintuitive, but I think this is just wrong. As I learned it, the tensioned bolt and the compressed material act as parallel springs. Given that, the third picture is incorrect; applying a compressive force to the joint will necessarily compress it. The joint will, however, resist the compression based on the sum of the effective spring constant of the bolt and the plates. Once the bolt has no tension in it, the joint would continue to compress, then resisting with an effective spring constant just from the plates.
The more interesting case is when the joint is in tension. As I understand it, the same idea holds (since we are assuming linear elasticity. That is, the joint will have an effective spring constant of the sum of the spring constant of the bolt and of the plates. The unintuitive "magic" of a bolted joint, then, is that if the joint is designed such that the spring constant of the plates is much greater than that of the bolt, any tensile load is carried by the joint more than by the bolt by the ratio of their spring constants. Obviously all of the tensile load in the joint is carried by the bolt, but compared to the joint at rest, the bolt gets very little additional load as the joint is loaded in tension.
Two things come out of this: First, because the bolt holds the joint together, giving you friction against shear, you get tensile strength "for free". Second, I think (although I need to check my Stress Analysis notes) that the nature of the loading on the bolt means that a correctly-designed joint will have particularly good fatigue behavior, because the average stress on the bolt is high, but the amplitude of variation is low. — BenFrantzDale 16:50, September 12, 2005 (UTC)
"Bolt Banging" re-directs back to this same page. So what is it?
The screw article made a reference to a bolted joint failing due to fretting, but its description was very poor, so I deleted it, however I'm making note of it here so that someone could add a good description of it to this page. Wizard191 ( talk) 19:42, 4 February 2010 (UTC)
Why, what, where, and how does this article need additional citations for verification? Hyacinth ( talk) 23:40, 12 May 2010 (UTC)
It would be great if we had a diagram, similar to Image:Bolted joint.svg, of a cap screw from "above", ie, not a vertical cutaway but horizontal and showing only the head. Like the one in this image: [2]. Hyacinth ( talk) 23:43, 12 May 2010 (UTC)
The info about crush washer is incorrect. A crush washer is a washer made of a softer material used to seal liquid in a threaded plug. They are commonly found in auto oil pans. —Preceding unsigned comment added by 192.104.67.222 ( talk) 19:27, 18 January 2011 (UTC)
Hello fellow Wikipedians,
I have just modified 2 external links on Bolted joint. Please take a moment to review my edit. If you have any questions, or need the bot to ignore the links, or the page altogether, please visit this simple FaQ for additional information. I made the following changes:
When you have finished reviewing my changes, please set the checked parameter below to true or failed to let others know (documentation at {{
Sourcecheck}}
).
This message was posted before February 2018.
After February 2018, "External links modified" talk page sections are no longer generated or monitored by InternetArchiveBot. No special action is required regarding these talk page notices, other than
regular verification using the archive tool instructions below. Editors
have permission to delete these "External links modified" talk page sections if they want to de-clutter talk pages, but see the
RfC before doing mass systematic removals. This message is updated dynamically through the template {{
source check}}
(last update: 5 June 2024).
Cheers.— InternetArchiveBot ( Report bug) 09:48, 11 November 2016 (UTC)
At the moment, cap-screw redirects here to bolted joint. But this article currently never uses the word "cap" except for "capscrew" in the "See also" section.
In order to comply with the Wikipedia:Redirect guideline, should this article say a few more words about "cap-screw" (perhaps it did at one time, but those words were deleted?). Or should that phrase redirect to some other article -- perhaps the same place that cap screw redirects to? -- DavidCary ( talk) 03:09, 5 October 2017 (UTC)
This page does not only describe how bolted joints work but screwed joints as well. It is more accurate to call the page threaded joint because both bolts and screws have threads. Pittsburgcarlos ( talk) 03:38, 8 March 2024 (UTC)