[PSUBS-MAILIST] CAD for presentation

[Hugh Fulton via Personal_Submersibles]

FEA on cheaper programmes is to be treated with caution.

We did comparison between Solid Works FEA,  Solid Edge FEA and actual measured deflection.

Solid works showed 2mm deflection,  Solid Edge showed 3.1mm deflection and actual measurement was .1 mm  using a DTI.

They are great programmes to show where stresses occur to assist design but they are a poor substitute for actual testing under proper conditions.

Proper FEA should be left to the experts, as Sean says, as the meshing is critical to get good results.

Hugh 

 

 

From: Personal_Submersibles [mailto:personal_submersibles-bounces at psubs.org] On Behalf Of Alan James via Personal_Submersibles
Sent: Saturday, 28 May 2016 12:54 p.m.
To: Personal Submersibles General Discussion
Subject: Re: [PSUBS-MAILIST] CAD for presentation

 

There is a rudimentary fea program called scan & solve, that is a plug in

for Rhino 5. I have it but haven't needed to use it yet. I was on a scan & solve

webinar & tried to pin the lecturer down as to how accurate it was; but

he was very elusive. You can export to ??? for fea, forget the name, wasn't solid works

but was another top program.

When I went to the solid works seminar & talked with some of the professionals

about fea, they were in fear & awe at the mention of it. So I am getting the impression

that it is pretty specialized & difficult to get really accurate results. Sean might

add to that. But hey technology moves on.

You aren't an old guy like me, so you may want to learn a top program that will

be with you the rest of your life, but people go to tech college full time to learn these

programs & if you aren't using them a lot you forget things.

Alan

 

 

  _____  

From: Scott Waters via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Sent: Saturday, May 28, 2016 12:17 PM
Subject: Re: [PSUBS-MAILIST] CAD for presentation

 

Will Rhino 5 and Orca work for loading into a FEA program?

Thank you,

Scott Waters

 

 

 

Sent from my U.S. Cellular® Smartphone



-------- Original message --------
From: Alan James via Personal_Submersibles <personal_submersibles at psubs.org> 
Date: 05/27/2016 7:03 PM (GMT-06:00) 
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Subject: Re: [PSUBS-MAILIST] CAD for presentation 

Scott,I bought Rhino 5 & Orca, which is a plug in to Rhino & the most popularmarine design program. Haven't touched Orca yet but found Rhino 5 wasmanageable to learn.I spent 4 hrs. at a  Solid Works seminar just learning the updates from oneyear to the next. Some of these programs are so big that it's only worth learning them if you are intending to use them 20 hrs. a week & want to dedicate a year or so learning them.I am finding Rhino 5 totally adequate for designing parts.Alan


      From: Scott Waters via Personal_Submersibles <personal_submersibles at psubs.org>
To: Personal Submersibles General Discussion <personal_submersibles at psubs.org> 
Sent: Saturday, May 28, 2016 11:00 AM
Subject: Re: [PSUBS-MAILIST] CAD for presentation
   
Alan,I think the advice of just learning a full scale system is good because I will have to do it anyway. The drawings for presentation pourposes are


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