Water Modellling in solid works 3

[sinu21]

Hi there

I am trying to model a ship in water in solid works. Is it possible to model water in solid works.
Has any one got any tutorials..

Thanks a lot

 

[CorBlimeyLimey]

How fancy are you wanting to be with the waves? A mill pond, a slight ripple, 6 foot swells, white-tops, ???
Do you have a photo of what you want to create?

 

[Eltron]

When I model water I usually just use one of the appearances.

Dan

http://www.eltronresearch.com

Dan's Blog

 

[sinu21]

Thanks Limey and Eltron.

What i am trying to model is to do a simulation on the model to try and find the change in buoyancy, due to a very high exentric loading.

Have you got any Suggetions? As we have to model properties of water to see how it behaves...

Thanks.

 

[CorBlimeyLimey]

I'm not experienced in the simulation side of SW, but from the little I know, I would say that is beyond the capability of SW.

 

[TheTick]

Not sure how much of this you already know, but these are the basics...

There is no way to automatically do this. You will have to do it iteratively.

Given the weight of the vessel, you can determine the amount of displacement required. You can then "cut" at the waterline until that amount of displacement is achieved.

The difficulty is in trying to get the correct list on the vessel so that the center of buoyancy is in line with the center of gravity. You will likely need to try many times to get close to the right vector.

 

[SBaugh]

You can, but its tricky... check out this link - Link

I used a flat solid and used a couple of Sketches and the Deform tool to make my wave like water appear to be moving with the Jitterbug.... it was not to hard once I figured it out... just took a lot of tweaking at both the sketch and the feature. Check out the other images on the site. There are other angles I made that shows the waves in the water.

Hope that helps,

Scott Baugh, CSWP
Berry Plastics
Cad Admin\Design Engineer
GEASWUG Greater Evansville Area SWUG Leader

http://www.scottjbaugh.com

"If it's not broke, Don't fix it!"

faq731-376

 

[tristram]

I would not do this in Solidworks.
You should either use a Naval Architecture program or do it the old fashioned way with Solidworks helping with some of the numbers needed.

-Joe
SolidWorks 2011 x64 SP 4 on Windows XP x64
8 GB RAM - Nvidia Quadro FX1700

 

[tristram]

You could also use a proper CFD program.

-Joe
SolidWorks 2011 x64 SP 4 on Windows XP x64
8 GB RAM - Nvidia Quadro FX1700

 

[rstupplebeen]

Please explain "very high exentric loading". This will help with suggestions. Are you looking for a quasi-static or dynamic answer? I believe with the cavity feature and an optimization design study you should be able to balance the quasi-static buoyancy equations. The goal would be for the mass of the displaced water to be equal to the mass of the boat plus the load. I hope this helps.

Rob Stupplebeen

https://sites.google.com/site/robertkstupplebeen/

 

[GRF]

If it is static just use a pressure or static load on surface that will be supporting the load no need to use a second part. If you are worried about the pressure increasing with depth than create split lines at intervals and apply the average pressure across those areas. Maybe a little more quick and dirty than what you are looking for though. But I still do not see the need to model the water.

 

[SBaugh]

How did this thread go from Modelling water to a CFD or simulation thread???

If he wants to model Water, then using the deform tool works fine... but I don't know how using some sort of FEA software simulation or otherwise is going to help someone model water??

Scott Baugh, CSWP
Berry Plastics
Cad Admin\Design Engineer
GEASWUG Greater Evansville Area SWUG Leader

http://www.scottjbaugh.com

"If it's not broke, Don't fix it!"

faq731-376

 

[TheTick]

What i am trying to model is to do a simulation on the model to try and find the change in buoyancy, due to a very high exentric loading.

 

[ShaggyPE]

bazinga

-Dustin
Professional Engineer
Pretty good with SolidWorks

 

[SBaugh]

Sorry I was looking at this one

I am trying to model a ship in water in solid works. Is it possible to model water in solid works.
Has any one got any tutorials..

Scott Baugh, CSWP
Berry Plastics
Cad Admin\Design Engineer
GEASWUG Greater Evansville Area SWUG Leader

http://www.scottjbaugh.com

"If it's not broke, Don't fix it!"

faq731-376

 

[Cockroach]

TheTick is bang on, this is an iteration. I did this, as TheTick describes, for building of a raft using oil barrels "floating on it's side" on a water surface. In essence, given the weight vertically down on an oil barrel of circular cross section, determine the water level on the barrel.

So you need to integrate the area below a horizontal line of unknown height to a circular cross section. I simply kept on increasing the line height to get an upper limit and then gradually reducted it in order to get a lower limit. You can then numerically integrate between those two limits.

Was a lot of fun using closed form equations from the integration, I was something like 2% error when the raft was built and loaded with the exact weight used in the calculation.

Your problem is remarkably similar.

Regards,
Cockroach

 

[sinu21]

Thanks Cockroach, Tick and all, for your kind response.

Cockroach - Would it be possible if you could sent me the model that you have made up.
It will be helpful for me to study the concepts.What were your support conditions.

Tick - We tried almost the same concept,Trying to find a solution.


Regards