Implicit and Explicit Analysis in FEA, Part - 01 (Differences & Application)

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In this video tutorial following important points are discussed -

1. When we need to use Implicit – Explicit schemes ?
2. What “Implicit & Explicit” terms indicate & what to do in CAE ?
3. Why iteration scheme used in Implicit & not in Explicit ?
4. Implicit - Newmark-β method
5. Explicit - Central difference methods
6. Why Implicit more expensive ?
7. Why Implicit more accurate ?
& many more important points are covered.

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I dont know what can i say. Great contrubution to CAE world again. Thank you

ahmetkulaksiz
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I had faced these questions related with implicit and explicit analysis. Thank you so much for this interesting thing. Sir🙏

matadayalagrahari
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This is the best video I found in youtube..Which explaned very clearly about Implicit and Explicit. Thank you so much sir. I just subscribed ur channel. keep doing more and more.

SOCIOFlicker
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In the first video of this playlist, you said giving the reference of the book that when the loading frequency is less than 1/4 th of the natural frequency whereas in this video 1/3 rd. Although there should not be a fine demarcation between the two .

harsh_hybrid_thenx
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Great Explanation with great simplicity


Though i have solved many problems i learn today that computer applies implicit and explicit are only for dynamic events but for linear static we have direct methods

Thank u very much sir

NileshPatel-nryh
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Nice explanation. Nevertheless, at slide 75 the explicit governing equation is disregarding the stiffness matrix which seems wrong. You should have a stiffness matrix multiplying you {D}n vector (while is substracting the mass matrix of course).

felisbertohernandez
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This is the best video I`ve seen on explicit analysis!!
But shouldnt there be a D_{n+1} term on the right hans side of the implisite scheme on the slide at 5:00?
The implisit scheme looks to be depending on terms from timestep n only, not {n+1}. Wouldn`t this make the scheme explicit by definition?

Mr_Bull
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Thank you very much for sharing. Keep them coming..

dakshitha
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Dear sir..kindly to clarify this..so in summary the Static: {f}=[K]{x}, Quasi Static:{f}=[C]{x'}+[K]{x}, I right?

cha-e_
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Thank you so much!!!! This video was very straightforward and probably the easiest to understand with respect to other cae videos! I will be sharing this with other cae beginners

nomastomas
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As always, thank you for the great video! I have a large model that contains 108 bolts and is a steel connection (grillage for transmission structures). The model has a static pressure applied on top of one of the members to check how the load is transferred through the entire structure. I am using static implicit but model diverges right at the beginning when I apply the pretension bolt forces. Do you think I can use explicit solver for this problem because the matrix doesn’t converge? If yes, how accurate my results will be?
Thanks again and I look forward to hearing from you soon

adelbadiee
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While modelling a masonry wall by simplified micro modelling approach, there was no problem during surface based contact interaction using Explicit solution technique but I got problem during Implicit solution? What could be the reason and how can that be solved? Any idea?

apaudel
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Thanks for a clear presentation of the concepts. Request more such videos.

shivamannan
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Have been looking for this.. Thanks alot bro

neerajcs
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excellent explanation, your videos are superb

parthy
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Dear sir
first of all thanks for such detailed video. I have a question regarding the same. If i have two surfaces in contact and my model is subjected to quasi static cyclic loading ( specially in ADAS Dampers) which method will be more accurate, as it is having contact+ dynamic + time increment+ slow loading

mohanbajaj
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Thanks, a lot Sir for sharing your experience. Keep it up, I am waiting for the next informative video.

waheedjaffar
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Thank you so much for the video. Can you please let me know if you posted a vedio to explain the difference between General Static and Riks Static?

mogaz
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Hi
I am unable to join your whatsapp group.
I am keen to learn the background of FEA. Please share your notes and learnings also.

shantanusingh
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any good book or journal I can use as a reference for this good information, sir?

D-Channel