How To Avoid Disaster When Doing Structural Finite Element Analysis.
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- Опубликовано: 28 июн 2024
- Structural Finite Element Analysis can range from simple structural analysis to the most complex time-dependent assessment. And without a good understanding of the basic of a structural assessment, you can lead to a spending a lot of time modelling something you don't need to, or lead to results that are garbage. Simple principles are laying behind any FEA assessment, whether it be a simple assessment or the most complex assessment. These simple principles derive from a simple acronym, GLAD. Geometry, Load, Analysis, Design, and applying the simple principles behind it make sure that even your most complex Finite Element Models get you the results that you need.
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Perhaps I should also to point out to all Structural Engineers out there... Especially those who are fresh graduate... Remember, A person who is very good in FEA software doesnt means he/she is a good engineer. Always check with the fundamentals such as bending moment diagram, shear deflections.
I like the point about hand calcs, super important to do that first to get a feel for the overall solution.
Hi yea if you don't know your target how do you know if the results are correct.
Thank you , an FEA series from you would be appreciated
Thanks for the suggestion
You mentioned Garbage-In Garbage-Out, another version of that is "PEBKAC" (Problem Exists Between Keyboard And Computer). The thing between the keyboard and computer is the PERSON operating it.
A very important consideration in structural analysis are boundary conditions- is the connection to the foundation fixed? is it pinned? Are the connections between elements fixed or pinned, or a combination of both?
And a consideration that applies when you get into actually designing is what elements are braced and what elements are unbraced? A floor diaphragm will typically brace the top flanges of beams but at atriums, stair openings, things like that the diaphragm won't be there and some beams and/or columns won't be braced.
Totally agreed, we can't fully rely on the fancy softwares!
Good video and very informative Brendan. This is the beginning of every engineers fare with complicated designs but with mentorship and confirming design programs with hand calculations will build confidence.
Hi Malik Glad that you found it intresting, All engineers should be assessing by hand the structure prior to running FEA and also as a validation. If you cannot assess it by hand then you should not be modelling it yet
Very informative video. Thanks Brendan, Keep going.
Always helpful
Glad that you enjoyed it.
Such great videos on your channel !!! One question off the topic, when you design tall RC building, what is your concrete usage index (so called CUI) you look to find structure efficient? for example, amount of concrete (m3) / gross floor area? I assume, its logical to put out foundation and basement floor concrete out of equation? By gross area i mean all floor area minus area of structure element?, such a little literature on CUI (from 0.3 to 0.6 for taller buidling). I know that it can vary especially in seismic active areas, but just wanted to hear Your opinion. Once again, such cool and informative videos!
"A good car doesnt make you a good driver". I have seen a lot of young grad as well as senior engineer who has been using FEA for years and think they are "FEA expert". Doesnt even know the basic fundamentals. A lot of engineers are trap to the first quadrant of Dunning-Kruger curve having big confidence but less knowledge
Well said, we just don't know what we don't know!
I am a final year medical student, interested in orthopedics. Do you think structural engineering can be applied to the design of spine prosthesis or implants for joint replacement in order to improve durability and efficiency, also can principles be taken from civ eng and applied to performing bone surgery and working with bone, also dealing with fractured bone to improve healing and stability?
Please make an video for steel structures all thumb rules.
Thanks for your suggestion! I've made a video about steel connections, not sure if you have checked it out: ruclips.net/video/0xOdVPtARXs/видео.html
Hi Brendan, Recently i am doing some heavy foundation structure FEA using space gass. I found that the results are not quite accurate or as expected when the panel goes to 600mm thick or above. Do you have any suggestions on other software that will be able to handle concrete design better, Brendan? thanks in advance.
Like Spacegass, manual design
which course can is available online for me to learn FEA for design consultancy application?
Just do what i had to do back in college. Code FEA using matlab. That was a god damn nightmare
1st ✋
Thanks for the support
2nd
Thanks for the support