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Might it not be easier to simply epoxy or otherwise bond a metal shaft in place in a blind hole in the quartz "base", with a through hole in the 2nd piece of quartz, use that as your stud? You could then use a nut, circlip, or any other type of connector you wish. you still need to deal with...

thanks for the link, definitely a great site for what I'm looking for.

Looking to do modal analysis on a hand-held structure in an effort to reduce uncomfortable vibration for the user - think baseball bat and the stinging sensation when mishit. Ideally, we'd be able to quantify the amount of damping (and therefore "sting reduction" for the marketing folks) from...

Should mention - I'm not dealing with extremely high velocity ballistics or anything - I'm dealing with lower velocity impacts that, while slower, are certainly past the quasi-static range. For example, baseball/bat impact, a hockey slapshot, a golf drive, a helmet-to-helmet football impact...

Looking for a good textbook on impact mechanics - ideally covering both ductile and brittle metals as well as polymer impact failure theories. Bonus points if it covers a bit of impact failure with composite materials (carbon composite, fiberglass, etc.) as well! Anybody have any good...

Mates are used to define how an assembly is constructed. So, if you have two faces you want to be in contact, you use the mates tool in assembly to define them as coincident. If you're doing it on a single part, mates do not apply, and you probably have a geometry error somewhere. Did you...

Good guess Bribyk, that's the one. Four point doesn't really make sense for the types of loading we see where bending or breakage-through-bending occurs - generally it's either a point load or a non-uniform distributed load (human body contact), either while cantilevered or when supported...

One more thing I forgot to mention - We also do 4 point bend tests on these shafts for ultimate strength (why 4 and not 3 you'd have to ask the last engineer, but for sake of continuity I use the same test). Generally these deform ~2.5 inches before failure, where they generally collapse and...

Rate is approximately 10m/s, although there's quite a bit of variation. I haven't yet done a thorough study of the loads and speeds behind the denting phenomenon (been too busy getting next year's product out, once I get some breathing room it's going to the top of the list). The angles and...

Thanks MSU, I realize it gets real complex real fast, was hoping there was a kind of simplified "higher this = better impact resistance" type equation, even if it was just comparative for one type of impact with one profile and one impactor - obviously it wont' be perfect, but it will at least...

In addition, if you could point me to any books that might have this kind of information covered well, it would be most helpful! to clarify the above (been talking too much to marketing lately...), I'm looking for an equation to approximate the local plastic deformation due to high strain rate...

In addition - does anyone have any good books to recommend for this type of info, especially given various cross sections and strain rates? Cheers!

I'm working with structural metal tubing (of an elongated octagonal cross section (height is about 17% taller than width) that's subject to high enough radial impacts (generally with another tube of similar size and strength) to cause both denting (generally on the edges), usually only small...

I'm working with structural metal tubing (of an elongated octagonal cross section (height is about 17% taller than width) that's subject to high enough radial impacts (generally with another tube of similar size and strength) to cause both denting (generally on the edges), usually only small...

We're shuffling some older computers out, and since I'm first in the "power user" pecking order (being the only FEA user), IT has suggested that we pass my current computer to one of the other heavy solidworks users and get a new workstation for me. I'm not about to argue, even though my...