Abaqus Explicit - Square Tube Crush Tutorial (Nonlinear Buckling with post buckling behavior)

[@m3hrdadmz]

Thank you for the video. It helped me a lot. 01:31 Problem Statement. 03:19 Simulation Flow Chart. 04:03 Simulation Descriptions (Geometry, Material Properties, BCs, etc.). 04:34 ABAQUS Eigenvalue Extraction Method. From this point, the simulation starts. You can switch between different modules while he is teaching: ===================================== Linear Buckling ================================== Create Column: 05:11 Part. Assign material to Column: 05:47 Material. Create Bottom & Top plates: 07:02 Part. 08:05 Assembly. 08:46 Mesh. Define two Node Sets for the top and bottom nodes of the Column. Then, define two Tie Constraint for the Top and Bottom plates using those Node Sets: 10:02 Interaction. Apply BCs, Top & Bottom, Pinned & Encastre: 13:17 Load. Linear Buckling - Linear Perturbation/Buckle: 14:13 Step. Apply Load - Unit Concentrated Force (Compressive) in Z-direction: 14:38 Load. Create Linear Buckling Job: 15:02 Job. Data Check for Linea Buckling: 15:15 Job. Adding NODE FILE, U command line to the end of the Step, before END: 15:23 Manipulating the Input (.inp) file of the Linear Buckling Job. 16:08 Running the Job from Abaqus Command prompt window. (If you can't find it in the Start Menu, check the folder in which you installed the software. You can also Run the Job directly from the Job Manager window in the Job module). ===================================== Nonlinear Buckling ================================== 16:51 Description. Delete the Linear Buckling Job and Linear Buckling Step: 17:35 Job/Step. Define General Contact: 18:16 Interaction. Create Nonlinear Buckling (Dynamic/Explicit): 18:49 Step. Apply BC, Pull_Down, Displacement in Z-direction: 19:13 Load. Define a Geometry Set for the Top plate, Top_Rf: 20:02 Adding History Output Request. Select Set, then choose Top-1.Top_Rf Set from the drop-down menus. Select RF3 and U3 from the Output Variables window: 20:23 Request History Output. Nonlinear_buckling, then do a Data Check: 21:08 Job. Adding IMPERFECTION command line to the beginning of the Step, before its definitions: 21:43 Saving the Nonlinear_buckling Job & manipulating its Input (.inp) file. 23:14 Running the Job from Abaqus Command prompt window. Check Results: 24:07 Visualization.

[@masoodamirshami7628]

Thank you very much for your video, Your method of explanation is realy admirable.

[@cohesityclasses873]

Sir , plz explain the following input for dynamic explicit. V= 2mm/s, deform model up to 30 mm. How I would select step time in dynamic explicit for quasistatic analysis.

[@rezalashani4005]

thanks for video but How the values of imperfection should be chosen?

[@sujaybhattacharya6562]

there is problem in the fiel-output, while submiting data shows error . i tried to do as you told. but some problem.

[@Goodmorning-class]

hi there. I am trying to find out ultimate load carrying capacity of a RC jacketed column. earlier the column dimension was 300*300 and the ultimate load carryimg capacity of that column is 963.045KN(Calculated mathematically in Accordance with Indian Standard code IS456-2000). Now i am trying to provide a jacket of Reinforced Concrete(RC) to that column of 100mm thickness. So , the new dimension of that column becomes 500*500. Area of steel provided Everywhere is 1% of gross cross-sectional area. SO what will be the new ultimate load carrying capcity of jacketed column (with ABAQUS)? I am ready to purhase CAE file

[@VKVVISHNUSS]

Sir, would you please explain how the pull down load for 'non linear buckling' mode were taken as 250?

[@hschan9423]

Thank you for the video, it is very helpful. I used to use static riks method for the nonlinear buckling part. What is the difference between using static riks and using dynamic explicit? The static riks method appeared to diverge when using general contact (standard).

[@gourabchakraborty4064]

Sir, could you please help me with a simulation. I want to do an under water impulsive loading simulation on a cylinder using CEL where I need to create a blast wave by appling an input velocity profile in the inflow Eulerian boundary condition. But I can't understand how to give a prescribed velocity in the inflow condition.

[@LeoGreca]

I couldn't make it work in Explicit mode, There is an error saying "The elements contained in element set ErrElemExcessDistortion-Step1 have distorted excessively." Also, you did changes in the mesh for explicit that were not shown, am I wrong?

[@martinmoran4919]

The video is good, and luckily it worked for me, almost exactly equal, but I wanted to comment on the fact that I couldn't find when he re-meshes for Explicit Type, which he says he will when meshing Standard in Linear Analysis.

[@priyankpadaria4105]

I need to do nonlinear buckling Simulation of concrete filled rectangle tube. Please help me.

[@MsAbenet]

Do you have a video on CFT columns analysis. Please I need help.

[@bappadas5826]

Thank you for the video. it was very helpful. can you help me with an Abaqus model of Multi-axial forging of simple rectangular shape workpiece (i.e. 12*12*18) 3D model?

[@Indonesia01ian]

Hi everyone, I am new user in abaqus could you give me a sugestion, what are step which I have to learn actually ,as a sophomore in mechanical engineer I havent use abaqus yet but I Want to know, in the end I realy want to know does my design strong enough handling some amount of force or not, trying to simulate my design like in Airbus/General electric competition "jet engine bracket" thank you so much sir

[@nellyainiey]

hi , very good tutorial . can u show another tutorial that include aluminium foam in it and can i know where u get the reference for that aluminium properties . i will be so grateful thanks

[@manjunathmunenakoppa3176]

please do a video on using drucker prager material model in rammed earth soil in compression test

[@jennirevivas6901]

Hi... do you have a video of geomechanics in abaqus???

[@fskedu.713]

Hi, I am trying to optimize my simulation result from Abaqus using Matlab.I have got objective function and optimization code but I am struggling to get the executable file written in C languages, Can you help me

[@kebedebedada3727]

hi thank you for your interesting videos can you help me with simulation of composite slab with different shape of profile steel sheeting how to model different shape of profile?

[@ahmedmizan]

Can you do an example of concrete-filled tubes under uniform compression load on the top of the loading plate?

[@MsAbenet]

Mizan Ahmed hi . Did you manage to do CFT? If so do you think you can help?

[@mohammedel-ghobary4798]

@@MsAbenet YES

[@satishgarg1]

Sir please upload some tutorial related to crushable foam

[@chaitanyasurepally8249]

Thank you sir for the video lecture.

[@Wow_vibes_343]

HI can you copy setup file for the same i.e .inp file

[@jaytech3526]

Sir please explain how to mesh a sphere inside a cube, (both having different properties)

[@yinqilin2054]

Hi, thanks so much foe your detailed video. In this tutorial, you model the nonlinear buckling by importing the imperfection from linear buckling. I used to watched one of your videos, which is also about the nonlinear buckling using the explicit analysis, however you didn't import the imperfection from the linear buckling analysis. Do you remember that video? I am wondering what is the difference between the two methods (one has a linear bulkling analysis before the explicit analysis, and the other is using the explicit analysis only)? I will appreciate your response.

[@abaqusacumen7397]

Linear buckling don't have the imperfections.

[@yinqilin2054]

yeah, I know. You use the deformation of the first three buckling modes as the imperfection in the nonlinear buckling analysis. So I just want to know what is the difference if you don't do this first linear buckling step. Thanks.

[@abaqusacumen7397]

In reality column is not perfect. They have imperfection. If you don't use the imperfection then you will end up with higher buckling load.

[@yinqilin2054]

I think I've got your meaning. Thanks a lot.

[@MomoMomo-en2kt]

sir thanks for the video can u upload the video of friction stir welding simulation in abaqus

[@MaNoJKuMaR-gv4ex]

What is imperfection? Why u r applying that? and how do u got those values?

[@jamesg6034]

Hi, thank you for your videos. I have a question, have you checked the the Ratio of kinetic energy and internal energy and also the Ratio of artificial energy to internal energy? Is there any efficient way to modify the simulation by reducing those ratios to less than 5%? Many thanks.

[@abaqusacumen7397]

Yes Energy balance is perfect. We have used the enhanced hourglass control. Thanks for input

[@rowdyrathore1033]

Hello sir, Can you upload the video related to the simulation of gear assembly on abaqus ................

[@bibinjose2527]

Can we do rock crushing analysis

[@이재호-n4f]

Thank you for sharing!

[@haoluong154]

Thank you, I have done it.

[@afaqueumer7968]

How can i use a pin load with very low velocity ex 150kn at a speed of 3mm/min instead of displacement ?? ....

[@06120111]

have you found the solution for this setting? i also need it. thank you .

[@martinmoran4919]

Tremendo. Gracias.

[@ershncmrogz]

u are the man!

[@Harrnash1]

No music at the begining again... :(

[@cjack4915]

very good

[@chhunbanann754]

Sir, do you have WhatsApp contact? Your mail is not possible to send. Thank you so much!

[@ha-xw9jf]

I saw many your tutorial abaqus video. It very useful for me. I am a beginner of abaqus. Can you help me to model the beam for my study? If yes, I will pay fee for you. Pls read my email.

[@abaqusacumen7397]

Ha, I will help you. Thanks a lot.

[@ha-xw9jf]

Did you get my email? Thanks

[@hakancelik458]

You are telling very complicated.

[@sujaybhattacharya6562]

in *.dat file

[@mono7891]

Stay away from Abaqus, one of the worst solver in the market. These are easy problems and such examples, after a good practice would work but in reality this solver cannot solve real problems.

[@sujaybhattacharya6562]

PROCESSING PART, INSTANCE, AND ASSEMBLY INFORMATION ******************************************************* ***ERROR: in keyword *CONFLICTS, file "nonlinear_buckling-trial.inp", line 16331: Keyword *Conflicts is generated by Abaqus/CAE to highlight changes made via the Keywords Editor that conflict with changes made subsequently via the native GUI. ***NOTE: DUE TO AN INPUT ERROR THE ANALYSIS PRE-PROCESSOR HAS BEEN UNABLE TO INTERPRET SOME DATA. SUBSEQUENT ERRORS MAY BE CAUSED BY THIS OMISSION ***ERROR: in keyword *CONFLICTS, file "nonlinear_buckling-trial.inp", line 16339: Keyword *Conflicts is generated by Abaqus/CAE to highlight changes made via the Keywords Editor that conflict with changes made subsequently via the native GUI. ***ERROR: in keyword *CONFLICTS, file "nonlinear_buckling-trial.inp", line 16340: Keyword *Conflicts is generated by Abaqus/CAE to highlight changes made via the Keywords Editor that conflict with changes made subsequently via the native GUI. ***ERROR: in keyword *CONFLICTS, file "nonlinear_buckling-trial.inp", line 16341: Keyword *Conflicts is generated by Abaqus/CAE to highlight changes made via the Keywords Editor that conflict with changes made subsequently via the native GUI. ***ERROR: in keyword *CONFLICTS, file "nonlinear_buckling-trial.inp", line 16331: The keyword is misplaced. It can be suboption for the following keyword(s)/level(s):

[@sujaybhattacharya6562]

PROCESSING PART, INSTANCE, AND ASSEMBLY INFORMATION ******************************************************* ***ERROR: in keyword *CONFLICTS, file "nonlinear_buckling-trial.inp", line 16331: Keyword *Conflicts is generated by Abaqus/CAE to highlight changes made via the Keywords Editor that conflict with changes made subsequently via the native GUI. ***NOTE: DUE TO AN INPUT ERROR THE ANALYSIS PRE-PROCESSOR HAS BEEN UNABLE TO INTERPRET SOME DATA. SUBSEQUENT ERRORS MAY BE CAUSED BY THIS OMISSION ***ERROR: in keyword *CONFLICTS, file "nonlinear_buckling-trial.inp", line 16339: Keyword *Conflicts is generated by Abaqus/CAE to highlight changes made via the Keywords Editor that conflict with changes made subsequently via the native GUI. ***ERROR: in keyword *CONFLICTS, file "nonlinear_buckling-trial.inp", line 16340: Keyword *Conflicts is generated by Abaqus/CAE to highlight changes made via the Keywords Editor that conflict with changes made subsequently via the native GUI. ***ERROR: in keyword *CONFLICTS, file "nonlinear_buckling-trial.inp", line 16341: Keyword *Conflicts is generated by Abaqus/CAE to highlight changes made via the Keywords Editor that conflict with changes made subsequently via the native GUI. ***ERROR: in keyword *CONFLICTS, file "nonlinear_buckling-trial.inp", line 16331: The keyword is misplaced. It can be suboption for the following keyword(s)/level(s):