Hey Alan...don't dumb things down just for Al. We'll explain it to him if we need to.
It's been a lot of years since I did any hard core engineering, but I remember enough to understand your post and it helps me understand what I'm seeing. I was a petroleum engineer, so the closest I came to a lot of the mechanical engineering stuff was figuring out whether to use a 24" pipe wrench or a 36" pipe wrench...when in doubt, use the 36". If it breaks, you shoulda used the 24". Royce -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Alan Brooks Sent: Thursday, December 26, 2002 5:38 PM To: [EMAIL PROTECTED] Subject: Re: ShopTalk: shaft flex v.s. frequency Oops. Sorry guys. Dave's right. I'll get calibrated after a while here. Have a great one. Alan At 06:21 PM 12/26/02 -0500, you wrote: >At 05:31 PM 12/26/02 -0500, Al Taylor wrote: >>Thanks Dave. I usually take John, with a shot of his current scotch, but >>never doubt your good self. Happy holidays to you and the family. > >Thanks, Al. >Same to you and yours -- and everybody out there on ShopTalk. > >>...I guess I will believe you. I just don't understand. We ran out of >>tuition money in the middle of the 9th grade. Thanks. > >I know I often say that some effect is straightforward from freshman >college physics. NOT THIS! Yes, someone might be able to derive it from >physics 101 -- but I certainly didn't. I didn't see this phenomenon until >a structural engineering course in my junior or senior year of E-school. > >Yes, I understand it... And it's clear to me that John and Alan do, too. >But please allow for the fact that we're engineers. As such, we have a >need to explain and justify our points. That is when we tend to wander >into things like cross-sectional moment of inertia, and the fact that >compressive and tensile modulus of elasticity is the same in shaft >materials. These seemingly gobbletygook terms actually have a meaning, and >in fact actually explain the answer to your question. But they only >explain it to another engineer. > >Happy holidays! >DaveT >
