TVP,
That was a terrific response. I wish I could give you more than one star. A link to a sketch, and another link to a concise description.
Exactly what I wanted.
Thanks again.
Bob
Dear Mr. Medeski,
Thanks. I will have to review that for its valuable information, but the rollers on a Demag crane base are a similar application. I should be able to do a little reverse engineering.
Mr. DH,
I am sorry that I cannot give you more details, but in an effort to assuage your...
MintJulep;
Thanks so much for your reply.
If I...
don't have brake shoes
have no thermal cycling
have no braking/traction forces
have no impact loads (like going through turn-outs)
Then would you expect that railroad wheel data applied to my project would be conservative?
Thank you for your reply TVP;
Funny that you would link me to that particular article. That is the very article that caused me to wonder what a divancancy is.
I understand what the article says about the action of divacancies, but what is a divacancy?
Is there any other mechanism that...
Do you have any data on railroad wheels regarding number of miles that a wheel is expected to operate? I can go measure a wheel and back out some data points.
A fellow I knew once said, "One data point is worth a thousand consultants."
The link to the website with the mathematical derivation of the likelihood of existence of divalancies was certainly interesting.
May I supplement my posting to include a request for a short summary by a member, or an illustration of what a divalency "looks like" or why they are important to...
It is my opinion that some round bar is a "forging". We regularly machine flanges from slabs cut from those forgings.
People like ABS have requirements on the amount of size reduction that is required for a bar to be considered a forging. That could be a starting point for "industry standard...
I have this for you from the FVC website.
FVC style HB necks have an automatic "nut stop" provided by the standard barrel OD. This eliminates the need for a second holding wrench. Optional "nut relief" in the barrel will allow two wrench operation.
To expand a little more, an HB (I always...
I recently came across an explanation that attributed a behavior (corrosion fatigue, if you must know) to the formation of "divacancies". Wiktionary defines a divacancy as:
A pair of vacancy defects in a crystal.
I am a member of ASM and a search through the journals available on their...
I use Vishay strain gages all the time for strain measurement. From my read of their website, it seems that the "Transducer Class" is a "home made word" of Micro Measurements this means that (in their words) these gages are:
****************
"designed specifically for transducer applications...
I have a metal on metal dry rolling contact application. An example of what I am talking about is a railroad wheel on a steel rail.
We have built several of these machines over the years, and I have some historical data from them, but I want to know if I am being overly conservative.
I am...
Dear UncleSyd,
The first article deals with:
"The area under discussion is the mating surface between the bore of a migrating kiln tyre and the shell or shell bars that the tyre sits on."
I tried to go to the IEEE site and I registered, but not being a EE, I am not a IEEE member. Does the...
I am searching for additional information dealing with the allowable design loads for dry rolling contact fatigue. One of my specific applications is like a rotary kiln (i.e. - flat roller on flat tyre).
