Where in the world is Greg Locock?
Where in the world is Greg Locock?
(OP)
Greg,
I developed a solution to a highway paving problem and now my collegue asked me to write a paper on it. Well, I wrote a bunch of stuff on my model and some others added a few things and submitted it for publication. a reviewer asked me to "cite" my source for a statement that automobile suspension systems have a natural frequency from 1.2 to 2.0 Hz, which I learned from you. My collegue says I can use that calling the comment "Professional Correspondence." But I need your contact information to complete the citation. How can we get that without violating your privacy, etc.?
dinosaur
I developed a solution to a highway paving problem and now my collegue asked me to write a paper on it. Well, I wrote a bunch of stuff on my model and some others added a few things and submitted it for publication. a reviewer asked me to "cite" my source for a statement that automobile suspension systems have a natural frequency from 1.2 to 2.0 Hz, which I learned from you. My collegue says I can use that calling the comment "Professional Correspondence." But I need your contact information to complete the citation. How can we get that without violating your privacy, etc.?
dinosaur





RE: Where in the world is Greg Locock?
- Steve
RE: Where in the world is Greg Locock?
RE: Where in the world is Greg Locock?
RE: Where in the world is Greg Locock?
Page 1790 "heave mode resonant frequencies 1-1.5 Hz.
There is also much more information about nat. frequencies of automotive vehicles in there. pg. 1785 has some nat. info.
Cheers.
Fe
RE: Where in the world is Greg Locock?
Fe
RE: Where in the world is Greg Locock?
http://au.linkedin.com/pub/greg-locock/2/540/16
<tg>
RE: Where in the world is Greg Locock?
which I have back in Oz and will have access to on Monday.
Cheers
Greg Locock
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RE: Where in the world is Greg Locock?
FeX - That is a lot of math in that paper. I printed it off and I'll read it for a couple years. Actually, that is a sophisticated model that I hope to emulate with my study in the future. Right now I just used a 1-DOF model, but I want to get to a 2-DOF dampened model before I am done. To do that though, I will need the rotational moment of inertia of the vehicle (I'm thinking Concrete mixer) to have a coherent model and that would be a heck of a project by itself.
Dinosaur
RE: Where in the world is Greg Locock?
I agree that paper seems like a good one for your situation. Usually 1DOF models are used for fundamental methodology and theory verification. A short while ago I did some work with vibration control theory, mostly non-linear 1DOF models. I later expanded it to 2DOF. Although, my models were of a vibration absorber, not a vehicle like yours.
And yea you are right, you would need the mass-moment of inertia of the vehicle lateral axis for the 2DOF model. However, if I were you I would certainly build the mathematical model first and assume a value for parameters, and then later determine them.
I'm glad I could help.
Best of luck
Fe
RE: Where in the world is Greg Locock?
Note that this is a crude corner frequency calculation, the actual whole vehicle bounce and pitch modes are different.
Cheers
Greg Locock
New here? Try reading these, they might help FAQ731-376: Eng-Tips.com Forum Policies http://eng-tips.com/market.cfm?
RE: Where in the world is Greg Locock?
But someday I may get to a 3 DOF model and that will be another animal altogether.
RE: Where in the world is Greg Locock?
Fe