Talk:Shearing (physics)

Latest comment: 5 years ago by 2602:306:CFCE:1EE0:4432:55D:B636:8FF0 in topic Basics & Presumptions: Lead & intro

Mergeing edit

I oppose the mergeing of this article with shear centre, since the shear centre is a very important topic in heavy engineering and is not explained by this physics article - -- (talk) 20:58, 28 November 2007 (UTC)Reply

The shear center=center of twist??? edit

The shear center is determined by statics (forces, stresses); the center of twist is a kinematic characteristics. Imagine a cantilever beam with a thin-walled channel section. If pure torque is applied on the free end, the beam should only undergo pure twisting. Yet if the shear center is the center of twist the section would be rotated either above or below its original position when twisting about the shear center. This would mean the beam is either bent up- or downward.

If we are defining the center of twist to be a point where we measure how much the section is rotating (i.e. the angle of twist), then it should be the centroid. (talk) 14:56, 5 May 2009 (UTC)Reply

Basics & Presumptions: Lead & intro edit

Like most people, I arrived here on a Wiki lazy link, and found the article wanting: —confusing jargonish gibberish. The problem, like most similar (usually technical) articles seems to be the authors making unwarranted presumptions about the reader (in violation of wiki guidelines which says; write to the average person MOS:LEAD).

I am Joe Average. While the title is "Shearing (physics)," this means nothing to me since I am unaware there is more than one kind of shearing. To most people, "shear" is a verb, NOT a noun. This not being explained, —me not doing the required unlearning,— all I see is gibberish.

"Shearing (manufacturing), a metalworking process which cuts stock without the formation of chips or the use of burning or melting"  
"Shear (sheet metal), various tools to shear sheet metal."

verb 1. cut the wool off (a sheep or other animal). 2. break off or cause to break off, owing to a structural strain. "the derailleur sheared and jammed in the rear wheel"
noun 1. a strain in the structure of a substance produced by pressure, when its layers are laterally shifted in relation to each other.

I hope somebody will make this most basic clarification. An explanation is not a list of facts & truisms, it usually requires much more thought. See also the rules of communication.

Quoting a few clues: WP:LEAD Wikipedia:Manual of Style/Lead section - Wikipedia

The average Wikipedia visit is a few minutes. The lead is the first part of the article that most people will read. A good lead tells the reader the basics in a nutshell, and also cultivates the reader's interest in reading more of the article, but not by teasing the reader or hinting at content that follows. The lead should be written in a clear, accessible style with a neutral point of view.

The lead should stand on its own as a concise overview of the article's topic. It should identify the topic, establish context, explain why the topic is notable, and summarize the most important points, including any prominent controversies.[2] The notability of the article's subject is usually established in the first few sentences. Like in the body of the article itself, the emphasis given to material in the lead should roughly reflect its importance to the topic, according to reliable, published sources. Apart from basic facts, significant information should not appear in the lead if it is not covered in the remainder of the article.

As a general rule of thumb, a lead section should contain no more than four well-composed paragraphs and be carefully sourced as appropriate....

End quotes, my bolds. Cheers!
--2602:306:CFCE:1EE0:4432:55D:B636:8FF0 (talk) 21:47, 10 August 2018 (UTC)Doug BashfordReply