STRENGTH And STIFFNESS: Design of Structural Foundations

No foundation is perfect. Each design reveals new insight and opportunities for further improvement. The art of foundation design finds an efficient arrangement to redistribute concentrated loads into the general ship structure. I review basic strategies for foundation design.
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References
[1] "Houly Wage for Ship Welder Salary in United States," Salary.com, 27 May 2021. [Online]. Available: www.salary.com.... [Accessed 02 Jun 2021].
[2] SteelBenchMarker, "Price History: Tables and Charts, Report #362," SteelBenchMarker.com, May 10, 2021.

[@nterry894100]

I spent an hour or two today looking for a video on this precise subject. This is why I need you Nicholas!

[@PraxZimmerman]

You can teleport a spacing guild member back in time 20,000 years, but you can't take away his passion for transportation of goods and passengers.

[@LvPatriot1]

Many thanks, very interesting :)

[@af0ulwind115]

Makes me think my ideas for a VTOL ekranoplan/trimaran may be more difficult when it comes to wing design than previously thought... then again i do like to over engineer whenever i have questions...

[@manuelffonseca]

Interesting idea

[@alanneumannalvarado2842]

Your videos are excellent! thank you so much!!!

[@leeaudio027]

Awesome topic, great video

[@fixedG]

I would love to get your informed opinion on the Lazzarini Shape. Talk about an unconventional take on strength and stiffness.

[@shaider1982]

I think Austal needs to review its LCS's simulations as the ship reportedly has cracks in the superstructure.

[@buckstarchaser2376]

14:45 Why did you weld your above-deck braces directly to the column? The tops of the plates point-loaded the column, which is why they are hotspots. Typically, a carefully shaped load-spreading doubler plate will be welded as an interface between this knife-like support brace, and the column; possibly with further braces tangentially to it.

[@DatawaveMarineSolutions]

The original design did feature the standard method of a thicker deck plate with no braces. That created too much of a point load at the deck interface. This particular column needed to resist an extremely large bending moment. The braces on top split that point loading between the brace and the deck plate, preventing excessive stress in either spot. We could have refined the braces further to provide a smoother transition on the structural stiffness, but it wasn't necessary. The current braces were easy enough to fabricate and achieved the required stress limits.

[@kapTcaTb2675]

Thanks for the video! Keep going :)

[@khimbittle7705]

new logo nice !

[@worshipjaiswal5807]

You are 💎 sir

[@elvisomofezi5125]

Hi Nick, Do you also perform hand calculations and use the simulation for validation? Or you just totally depend on your FEA simulation.

[@DatawaveMarineSolutions]

Primarily, we use the simulation. Most scenarios for FEA involve structure too complicated for hand calcs to be accurate. But we also validate the simulation software and methods by comparing it to several test cases.

[@elvisomofezi5125]

@@DatawaveMarineSolutions Thanks Nick, your videos have been very helpful especially the GHS tutorial series.

[@ShaneGardec]

Great theoretical solution, practical however...

[@deltacx1059]

I video about tumblehome hulls would be nice.

[@DatawaveMarineSolutions]

I will add it to the list.