dynamic modeling of a strip valve

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WebPilot
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Re: dynamic modeling of a strip valve

Post by WebPilot » Thu Dec 18, 2008 3:08 am

Scuse accepted.

~°~~°~~°~

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Re: dynamic modeling of a strip valve

Post by WebPilot » Thu Dec 18, 2008 10:56 am

NOTE: I've revised the previous graphic and added the formulation of M, the equivalent mass.
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Re: dynamic modeling of a strip valve

Post by WebPilot » Thu Dec 18, 2008 9:09 pm

~°~~°~~°~

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Viv
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Re: dynamic modeling of a strip valve

Post by Viv » Thu Dec 18, 2008 9:13 pm

Forrest! that is not funny at all how Kirchoff's theorem has come back to haunt me after all these years away from a electronics test shop, have to start working now and pull out an old text from collage and my lecture notes :-)

Love the break down and definitions though, strongly recommend any one who has trouble to study that first, pay attention to the comments regarding pressure and its results

Viv
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Re: dynamic modeling of a strip valve

Post by WebPilot » Fri Dec 19, 2008 8:07 am

Use it or lose it, Viv.

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NOTE: I've revised the previous graphic and edited the definition of amplitude to X(ψe).
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Re: dynamic modeling of a strip valve

Post by WebPilot » Fri Dec 19, 2008 6:01 pm

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Re: dynamic modeling of a strip valve

Post by WebPilot » Sun Dec 21, 2008 2:52 am

The plot that I promised ...

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Dimensionless amplitude values on the left ... phase angle values on the right. There are only two phase angles; namely, 0 and π radians.
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Re: dynamic modeling of a strip valve

Post by Viv » Wed Feb 04, 2009 6:35 pm

Hi Forrest

I thought you might be interested to see what this guy was up to with reed valves, http://thekneeslider.com/archives/2009/ ... ke-engine/

Same problems but connected to our other love ;-)

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Re: dynamic modeling of a strip valve

Post by WebPilot » Mon Feb 16, 2009 10:57 pm

Viv wrote: Same problems but connected to our other love ;-)
Thanks. "Connected ?" Yes, but our dfr is somewhat constant, whereas that of his device varies over a wide range.
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Re: dynamic modeling of a strip valve

Post by Mike Everman » Tue Feb 17, 2009 12:09 am

Hi Forrest! Hope you've been well.
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Re: dynamic modeling of a strip valve

Post by WebPilot » Tue Feb 17, 2009 3:09 am

Thanks for asking, Mike; I'm fine. I've just been busy with "other things".

I have been answering emails, though.
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alex smikle
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Re: dynamic modeling of a strip valve

Post by alex smikle » Tue Mar 03, 2009 5:15 am

hello webpilot,
Do you have a report in PDF? The info you have here is very interesting but at the same time its overwhelming and i am trying to put it all together. I am guessing you are a mechanical engineer, on a masters level? I am seeing some similar stuff to what i did at school like the frequency ratio, the natural freqeuncy and modes of vibration. You also have some structural mechanics like bending moments etc. Its similar to me and i did a study but i did not incorporate any sytstems controls with transfer functions etc.
I get what you're doing but its a lot to swallow, a report would give me a good idea, all i did in mine was obtain an optimal life span for an optimal thickness, your frequency analysis would of helped me in determining the freq. of the valves.

About your finite element analysis, why not just use solid works ?

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Re: dynamic modeling of a strip valve

Post by WebPilot » Tue Mar 03, 2009 7:43 pm

Hi Alex,

> Do you have a report in PDF?

Yes I do, but I'm not releasing it as of this date.

> The info you have here is very interesting but at the same time its overwhelming and i am trying to put it all together.

Thanks. Do not feel bad. It took me weeks to perfect the technique.

> I am guessing you are a mechanical engineer, on a masters level?

It may be found on my profile, BSME / MSEMch .

> About your finite element analysis, why not just use solid works ?


No reason. I write a lot of my own code, or use programs which I have the source code.

Why? So I can modify them to suit my own needs. If their generated solutions pass certain benchmark tests, then I can safely assume the code is working properly. It certainly helps to verify the code with experimental data when possible.

BR
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Re: dynamic modeling of a strip valve

Post by WebPilot » Sun Jun 21, 2009 12:32 am

Wow, it's been a year already since I started this post. Ah, it seems like it was only yesterday.
Last edited by WebPilot on Tue Sep 29, 2009 5:36 pm, edited 1 time in total.
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Re: dynamic modeling of a strip valve

Post by WebPilot » Sun Jun 21, 2009 12:54 am

Furthermore,

See Grim's External Valve Grid where he used my theory to virtually eliminate valve damage in his innovative engine!

IOW, he experimentally confirmed my mathematical theory; no brag ... just fact.

Thanks again, G!
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