Virtual Models OK? - Page 2 - Ships Nostalgia
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Virtual Models OK?

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  #26  
Old 11th January 2014, 23:55
John Callon John Callon is offline
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Derek, when you say the virtual model can be meshed, what does that mean. To create a virtual model do you need to have a considerable amount of software. I am thinking about the 3D model that has featured on this website of one of Union Steamships of New Zealand, possibly the Wahine. The detail on the model is beyond belief.
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  #27  
Old 12th January 2014, 13:24
caledonia2006 caledonia2006 is offline  
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Hi again John, If you look at the figure in my last posting closely you will see that the surfaces are covered in small quadrilaterals, this is the mesh referred to. The CAD system generates the 3D solid model of the pressure vessel, and the FE package generates the mesh as the engineer requires, the meshing being finer at the nozzles etc. where stress concentrations are expected. The FE package then calculates an equilibrium condition for all the elements and hence strain for each element thereafter the stress is established over the entire model. The above example is for a thick wall structure where through thickness stresses are significant.

In the case of ships or any other plated structure, we use what is called plate elements since the thickness is relatively small, and generally speaking through thickness stresses are insignificant.

I have not found the posting you refer to but it is possible that the model was constructed using an Illustrators software package or a CAD system with a rendering add-on; either option can give photo-real results. For engineering software for 3D modelling and FE analysis you are talking about many thousands of pounds. And for ships even more. Sometimes the software is so expensive that the engineering company will lease the software rather than purchase it.

Hope this helps your understanding. Derek
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  #28  
Old 21st January 2014, 21:13
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Nice discussion fellows. Virtual models are another way of modeling.

I chose an inexpensive flight sim orientated program that works fine for me, but I'm sure cannot compare with the high priced programs.

Since I only build to 90 percent or so, and don't get into fine details, it works fine, and also keeps the "poly" count (building blocks - triangles actually) of virtual modeling.

No you can't "hold" them. But a small hard drive provides miles of shelf space.

A few more attached:

Baku_ 1942 Russian "leader" destroyer
Urugan _ 1941 Russian "guardship" - (destroyer escort)
My Hog Islander jpg is too big - see you next time
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File Type: jpg Baku.jpg (87.3 KB, 11 views)
File Type: jpg urugan.jpg (73.4 KB, 9 views)
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  #29  
Old 21st January 2014, 21:38
John Dryden John Dryden is offline  
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The thread with the Wahine John mentioned earlier:
https://www.shipsnostalgia.com/showth...ghlight=wahine
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  #30  
Old 23rd January 2014, 02:56
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The modellers on this site may want to try Delftship Free www.delftship.net/ which is a 3D naval architect modelling program. We use the Pro version but the free release will do most of what you want without cost.

www.delftship.net/
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  #31  
Old 31st January 2014, 20:02
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Glad to hear there is some freeware for us old folks.

Attached is a pix of my program =FSDS, which is not free but I believe still fairly inexpensive.
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  #32  
Old 31st January 2014, 20:05
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A few new builds; some merchants:
A Liberty ship and a Russian Timber Carrier 30's-40's.
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File Type: jpg T_Stalin.jpg (79.5 KB, 27 views)
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  #33  
Old 11th February 2014, 19:59
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I finally remembered to get the pix of the Hog Islander, and another new one, a trawler the HMT Excellent. The original was my first build and needed a complete new build.
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File Type: jpg HogIsl.jpg (80.7 KB, 13 views)
File Type: jpg exc.jpg (64.7 KB, 16 views)
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  #34  
Old 18th February 2014, 20:52
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a few more;
E/F class RN Destroyer and a German 1918 class minesweeper.

I'm looking for a stern pix of the German 1940 class minesweeper. None found so far on the web or in my books. The one profile I found seems to be very inaccurate compared to the pix I have found.

Thanks...
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File Type: jpg M1918.jpg (59.6 KB, 8 views)
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  #35  
Old 9th March 2014, 19:04
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I'll try a "guess what ship this is?" ....well 2 then.

I hope I've modelled both accurately, again without plans. Thank God for pix and drawings!

First one to guess each correctly wins a virtual beer, if you are the proper age for your locale.
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File Type: jpg mys2.jpg (71.6 KB, 12 views)
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  #36  
Old 18th March 2014, 15:51
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no takers ... a few more then. no guessing here. 2 French, a colonial sloop and a WW1 relic still fighting in ww2.(about 6 according to some sources)
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File Type: jpg arras.jpg (74.3 KB, 9 views)
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  #37  
Old 12th April 2014, 21:23
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And a few more:
Zagreb 1940
Stari Bolshevik 1941
Marti 1941
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File Type: jpg Zagreb.jpg (74.5 KB, 7 views)
File Type: jpg Stari_Bol.jpg (87.6 KB, 18 views)
File Type: jpg Marti.jpg (82.7 KB, 12 views)
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  #38  
Old 21st May 2014, 02:38
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Been busy, but still going...Treasury class US Coast guard. late 30's and 43 versions.
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File Type: jpg Spencer43.jpg (74.1 KB, 9 views)
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  #39  
Old 21st May 2014, 02:46
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and USS Lanikai - Phillipines December 41. Great book "Cruise of the Lanikai" by Kemp Tolley. Few pix and no plans available. So a WAG, I'm not happy with her stern.
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File Type: jpg Lani.jpg (115.6 KB, 14 views)
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  #40  
Old 4th June 2014, 19:50
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A few more off the ways:

RN J/K/N Destroyer 1940

USN "S-Boat" sub 1941
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File Type: jpg JKN.jpg (83.1 KB, 6 views)
File Type: jpg S44.jpg (67.1 KB, 11 views)
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  #41  
Old 6th June 2014, 18:16
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Hello!
You make nice models Sully.

Best regards.
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  #42  
Old 12th June 2014, 04:17
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Thanks K..............

better than watching the tube.

The research is fun also.
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  #43  
Old 9th July 2014, 16:40
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a few more

Greek Destroyer Vassilla Olga 1941

FP - US Army vessel! 1943 - type used in the movie "Mr. Roberts"


2 repaints:

Smerch -Soviet Guardship 1942

Turbine - Italian Destroyer 1941

Working up more in the pipeline.
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File Type: jpg vassillaOlga.jpg (84.7 KB, 6 views)
File Type: jpg FP.jpg (72.3 KB, 10 views)
File Type: jpg smerch.jpg (80.6 KB, 6 views)
File Type: jpg turbine.jpg (87.3 KB, 8 views)
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  #44  
Old 10th July 2014, 07:42
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Hello!
Good work Sully!

Best regards.
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  #45  
Old 14th August 2014, 19:28
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4 more

I finished a few more:

Greek Destroyer Leon II 1940
Greek Destroyer Psara 1940
Greek Torpedo Boat Proussa 1941
Romanian Torpedo Boat T 1 1941
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File Type: jpg LeonII.jpg (102.9 KB, 4 views)
File Type: jpg psara.jpg (95.8 KB, 2 views)
File Type: jpg proussa.jpg (73.0 KB, 4 views)
File Type: jpg T1.jpg (83.3 KB, 7 views)
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  #46  
Old 15th August 2014, 00:13
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good day sully.m.today.04:28.#45.re:4 more.more great models.you certainly produce your share of models.you could be called the henry ford of model building,thank you for sharing,regards ben27
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  #47  
Old 28th August 2014, 01:14
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Thanks Ben.
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  #48  
Old 17th October 2014, 19:08
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Been busy - a few more:

Romanian Destroyer Maraseti - 1940
RN Captain Class escort (US - DE) 1943

and 2 from the RCN - 1939 - the Canadian ocean going navy consisted of 6 ex 1930s RN 2 stack Destroyers and 4 homebuilt minesweepers. I made an example of each:

HMCS Frasier 1939
HMCS Fundy 1939
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File Type: jpg maraseti.jpg (79.2 KB, 3 views)
File Type: jpg cap.jpg (70.3 KB, 5 views)
File Type: jpg Frasier.jpg (57.2 KB, 2 views)
File Type: jpg fundy.jpg (98.0 KB, 6 views)
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  #49  
Old 17th October 2014, 23:58
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good day sully.m.today.04:08.#48.re:virtual models ok? excellent display of your latest productions.thank you for sharing.regards ben27
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  #50  
Old 19th December 2014, 18:57
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I was able to heve the shipyard crew finish these vessels before their annual Christmas Holiday:

2 - Italian Destroyers (reclassified Torpedo Boats in the late 30s)
RD - WW1 Italian minesweeper - 30 used in WW2
Celtic - liner = my mother emigrated aboard her to the USA in the early 30s - before the ship's loss, thank God!

Happy Holidays all
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File Type: jpg Oraini40.jpg (96.6 KB, 4 views)
File Type: jpg GenCantore42.jpg (74.8 KB, 2 views)
File Type: jpg RD41.jpg (72.4 KB, 3 views)
File Type: jpg Celtic.jpg (102.7 KB, 8 views)
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