Quasi-static Analysis with Abaqus/Explicit

Quasi-static analysis is a useful tool for studying systems which undergo very large deformations. While the implicit solver in Abaqus/Standard would seem like the obvious choice due to the globally static response of the system, Abaqus/Explicit is much more efficient for this type of problem.

Consider a rigid punch contacting a deformable plate. The punch is moved at 2.5mm/min, covering a total distance of 12mm. Since explicit dynamics works with very small time increments, the quasi-static problem has to be condensed into a manageable time frame, otherwise the simulation could easily require several million increments to complete.

In this tutorial I will demonstrate how we can model the above experiment using the appropriate techniques which produces good quality results within a reasonable time frame.

[StefConEnterprises]

Great stuff! I liked the part where you discuss energies and volumetric locking. Thanks!

[MrFarzad]

Thank a lot. It was very useful and fruitful.

[arunprasanth]

Extremely Good video for Quasi-static analysis.. Thank you.

[haminh]

Thank you so much, have a good new year !

[pinkirasheeda]

sir
ur vedio is helpfull for me. and have given excellent informatiom.i have question on how to calculate mass scaling for the multilayer composites

[TheFungusPatrol]

Hello. Thanks for the helpful video! I was wondering why you decided to do an Explicit analysis rather than a Standard one.
Thanks again!

[dr.nayyefa.alqayssi]

very wonderful video. Thank you very much please can you upload another video for multi layer material behavior under the same loading condition kind regard

[satishraja]

Dear Sir
Excellent Video. Would it be possible for you to provide us with either input deck or CAE file. I would use this as reference to model another problem which is similar.

Regards

[budiajiwarsiyanto]

Thanks for the excellent explanation, sir. I have the question, did you define speed on RP in the punch? Based on the description in this video, you say "The punch is moved at 2.5mm/min, covering a total distance of 12mm". Appreciate your answer

[sustainably]

Could you please tell me if you have constrained the Reference Point of rigid body, if so what type of constraint did you use. Or just adding the Boundary Conditions Displacement would do.
I am doing something similar but with the CF.


- Thank you

[artoscen]

Hi, thanks for the nice tutorial. I wonder if the Standard implicit solver would have the same solution as Dynamic explicit in this case. Have you done one with Standard implicit?

[卡殿-yn]

Thank you for your video.
I have I question to ask. If my simulation include the fracture or failure, and if the procedure of quasi static simulation is the same as your video? I have create a individual set of impacted part, and to evaluate the ratio of kinetic energy and internal energy, the loading displacement with the same smooth step amplitude, but the initial kinetic energy is not under 5% of internal energy. The fracture part flied away with velocity, although I want to simulate the quasi static experiment, the fracture with kinemic energy. Could you provide a video that illustrate this simulation that with fracture(solid element or beam element)?

[nithi]

This video is very informative. Thank you so much. I have some questions in my problem. I have a RC slab of 120mm thick, simply supported at four edges and at the center of slab one isolated square column of size 150x150x420mm (150mm projection from both top and bottom face of the slab). I want to analyse the structure in quasi static analysis by introducing velocity through the column and required the result in the form of failure load and corresponding crack pattern.how is it possible in ABAQUS Explicit?

[andromeda]

if we would use total time instead of step time, the displacement rate changed? what would change?

[francisting]

Hi, thanks for video. Can u help me in modelling?i faced many problems

[pramithdesai]

Sir How did you calculate the mass of the indentor??

[adityakatyayan]

Great video.. Thanks a lot.
PS: how much time did the analysis take to complete?

[slim]

how did you know you can reduce the K.E by factor of 63, 000? at 22:40

[Igorstrokov]

Спасибо за уроки, а неявная динамика есть, у меня глубоко нелинейная задача, но медленно протекающий процесс - квази статика

[outplayed]

I have 3 questions if someone can answer I would appreciate it:

1- What is the point of using enceastre BC on solid elements since they don't have rotational dofs, isnt pinned is more accurate?
2- How does the solver recognize the relation between Reference Point and Discrete Rigid Part, I did not see any relation definition such as interaction given to them ?
3- Why punch has the slave surface and blank has the master one, shouldn't it be other way around since the blank deforms it should have slave surface and rigid punch should have master surface ?

Thanks.