Creating a dynamic flexible part

Hi all,

Been a solidworks users for a long while but have a new challenge. I
need to create an elastomer diaphragm that will dynamically stretch
based on the movement of the mated parts.

This version is roughly .030 thick and 1.1 in diameter. The outer
perimeter, roughly a .075 lip, will be clamped secure.

The center area, a diameter of about .700, is sandwiched between two
washers that will reciprocate back and forth. In real world, the
diaphragm will stretch some distance, say .100, in either direction as
the washer sandwich cycles.

I need to make a part that will imitate this movement dynamically in a
model. I know it can be done as one of my techs (now gone along with
the model) did it several years ago on SW 2001 !!

I'm trying splines, stretches, deforms, etc but have had no luck so
far.

Any help is really appreciated.

Thanks

Doug

 

Potential techniques depend on how you want to use the data.

Dynamic assy motion?
Animator?
Shown in discreet positions?


If you want to do Dynamic assembly motion, you've got to fake it.
Probably use two separate parts that move independently, and kind of
vaguely looks like a single part deforming.

If you want to use Animator, you have to use an in-context technique,
probably a loft.

If you want to show the part in discreet positions, you could do just
about anything using configurations, although a loft would again work well.

 

Have you looked at Ship In A Bottle?

--
J Kimmel

www.metalinnovations.com

"Cuius testiculos habes, habeas cardia et cerebellum." - When you have
their full attention in your grip, their hearts and minds will follow.

 

Hi,

Have not heard of Ship in a Bottle. A sample or demo provided by
Solidworks?

This will be for visual use, as a tool to show vendors / customers what
happens to the diaphragm during operation.

I have a model all but complete w/ a rigid diaphragm that I can post
tomorrow to give a better idea of the entire mechanism.

Would post today but the flu has hit hard.

Thanks for the input.

Doug

 

Ship in a bottle is commonly used to benchmark solidworks computers. It
is an "animation" driven by a macro that rebuilds the part a specified
number of times. The part that is relevant to a flexible diaphragm is
the "wave action" in the animation. You can find it at:
www.mikejwilson.com.

--
J Kimmel

www.metalinnovations.com

"Cuius testiculos habes, habeas cardia et cerebellum." - When you have
their full attention in your grip, their hearts and minds will follow.

 

Found it !

After looking at this this, it appears the macro is simply using
equations to shift the shape of the wave model by set distances. Looks
cool but isn't really going to work for what I am doing.

I am going to post a model on a new thread to give a better idea of
what I have in hand.

Thanks for the input

Doug