Chains? - Page 2 - Bodybuilding Discussion on Bodybuilding.net Training Forum

iron_worker · 03-21-2008, 10:24 AM

Are you in engineering? I'm a 4th year mechanical myself at the University of Saskatchewan.

I agree with you there, that property is called hysteresis (sp?) I believe. Learned some about that in hydraulics since it affects how relief valves (and other things with springs) open and close with pressure. However, I think you could still set the band to have the same linear effect either way. You would just have to have a little more pretension when using it in the unloading direction. (band is lifting the weight). Anyways, I didn't think the hysteresis of the band would be a large enough effect to consider but I've also never tried it before!

IronWorker

Kane · 03-21-2008, 10:29 AM

I'm finishing up a master's degree in structural engineering.

It is a type of hysterisis. Hysterisis loops are usually generated from numerous cyclic loadings. The effect can be large depending on the strength of the band and definitely on how much strain you've induced in the band.

iron_worker · 03-21-2008, 11:12 AM

Well I think we just ruined this thread. lol

EricT · 03-21-2008, 11:38 AM

Why do I get the feeling you guys can't express this in english?

I'm not sure who's agreeing or disagreeing with what.

widdoes2504 · 03-21-2008, 11:49 AM

I am so confused

too much info....

Kane · 03-21-2008, 12:15 PM

Quote:

Originally Posted by Eric3237

Why do I get the feeling you guys can't express this in english?

The scary part is that was english

I think somewhere along the lines it turned from a powerlifting topic to a discussion of introductory mechanics of materials

EricT · 03-21-2008, 12:50 PM

No, not english....Jargon .

j/k

BG5150 · 03-21-2008, 12:52 PM

Quote:

Originally Posted by Kane

I think somewhere along the lines it turned from a powerlifting topic to a discussion of introductory mechanics of materials

Introductory?? I'd hate to see what it's like when it gets complicated...

03-21-2008, 10:29 AM	#12 (permalink)
Kane Rank: Lightweight Experience: 3-5 Years Join Date: Nov 2005 Posts: 1,590 Country: Gender:	I'm finishing up a master's degree in structural engineering. It is a type of hysterisis. Hysterisis loops are usually generated from numerous cyclic loadings. The effect can be large depending on the strength of the band and definitely on how much strain you've induced in the band.
	Kane's Sig:Bench:275 [1x1] Deadlift:365 [1x3] A2G Squat:275 [1x3] "Shut up and squat!" "NO, this is my squat rack. Go get your own!"

03-21-2008, 11:38 AM	#14 (permalink)
EricT Moderator Rank: Heavyweight Experience: 7-10 Years Join Date: Jul 2005 Posts: 5,835 Country: Gender:	Why do I get the feeling you guys can't express this in english? I'm not sure who's agreeing or disagreeing with what.
	EricT's Sig:I'm tired of the myth that bb'rs aren't flexible. As a group, they are extremely flexible. They have an amazing ability to bend over, place their heads between their legs, and blow smoke up their own asses.

03-21-2008, 11:49 AM	#15 (permalink)
widdoes2504 Rank: Lightweight Experience: 10+ Years Join Date: Oct 2006 Location: San Antonio, Texas Posts: 1,267 Country: Gender:	I am so confused too much info....
	widdoes2504's Sig:Height: 6 foot Weight: 240 pounds Bench: 415 (1x1) Deads: 565 (1x1) A2G Squat: 425 (1x1) Cardio sucks

03-21-2008, 12:50 PM	#17 (permalink)
EricT Moderator Rank: Heavyweight Experience: 7-10 Years Join Date: Jul 2005 Posts: 5,835 Country: Gender:	No, not english....Jargon . j/k
	EricT's Sig:I'm tired of the myth that bb'rs aren't flexible. As a group, they are extremely flexible. They have an amazing ability to bend over, place their heads between their legs, and blow smoke up their own asses.

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03-21-2008, 10:24 AM	#11 (permalink)
iron_worker Rank: Lightweight Experience: > 1 Year Join Date: Jan 2007 Location: Saskatoon, Sk, Canada Posts: 1,078 Country: Gender:	Are you in engineering? I'm a 4th year mechanical myself at the University of Saskatchewan. I agree with you there, that property is called hysteresis (sp?) I believe. Learned some about that in hydraulics since it affects how relief valves (and other things with springs) open and close with pressure. However, I think you could still set the band to have the same linear effect either way. You would just have to have a little more pretension when using it in the unloading direction. (band is lifting the weight). Anyways, I didn't think the hysteresis of the band would be a large enough effect to consider but I've also never tried it before! IronWorker

03-21-2008, 11:12 AM	#13 (permalink)
iron_worker Rank: Lightweight Experience: > 1 Year Join Date: Jan 2007 Location: Saskatoon, Sk, Canada Posts: 1,078 Country: Gender:	Well I think we just ruined this thread. lol

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