Analysis & Simulation with CATIA

Hi everyone,

I'm new on that so I'll try to explain my self properly hehe.

I'm triying to do some finite element analysi withe the modul Analysis & Simulation of Catia V5-16.

The problem comes around when I try to define the loads on my figure. I'm working with an endlees worm and I have to apply the loads not in the whole perimeter but in a small surface, the one in contact with the gear. How can I define this surface? I have try to project a plane on the worm but it doesn't work properly.

I have the same problem when trying to analyze a spindle, as I do have to apply the loads only in just a pair of the threads and I don´t know how to do that. I have read something about the extract modul but nothing especific neither good explained.

Thanks everyone!!

Wow
Lost me in the first 10 words,

Bob

Aw, go on, try us. If we're too dumb to understand so be it, but if we don't try we'll never know.

Andrew

"Aw, go on, try us. If we're too dumb to understand so be it, but if we don't try we'll never know.

Andrew"

have to say haven't used catia for yonks but the theory would be intresting.

Use a real worm and wheel and some engineer's blue to find out what teh real contact patch looks like? Or is that too empirical?

Neil

If you are using Catia V5-16, this is a proffesional 3D cad package. Would you not have colleagues who may be able to offer advice at work?. I suggest that you try asking this question on websites such as Grabcad.

Andrew, which bit of the question/answer would you think we should start with - tribology, metallurgy, material science, transmission/gear design or advanced simulation and modelling?

As Gary points out, the answer to this question is to seek help from his Catia reseller who will no doubt accommodate him with the required training to use these tools confidently. I must also admit to being curious as to how he has managed to get access to that level of software without having the associated support available.

Mark

I was hoping for an insight into contact stress theory, and an overview of ball bearing theory would have been interesting.

Regards,

Andrew

You might find the NSK (RHP Bearings) web site interesting if you want to know more about bearings without getting too technical at first.

http://www.nsk.com/rd/technology.html

Mark

Mark: Thanks for the link to the NSK website. I've downloaded some of their technical documents. They'll come in useful as and when I re-design the spindle and bearings on my surface grinder.

Regards,

Andrew

Andrew, you might also look at the SKF site along with the INA offerings. SKF are particularly good for spindles etc. depending on how industrial you want to go!

Mark