Sir, this is a great video series for a student to learn abaqus from scratch. sir you have helped students with limited resources to gain such high level of conceptual clarity

Amazing tutorial!! This is the best video about structural modeling in ABAQUS I have watched so far. Such a masterpiece👍. Keep up the good work sir

Thank you so much Professor Elkady

Many thanks for this useful tutorial, Dr. Elkady. Subscribed.

Dear Ahmed, The vid is very clear and usefull. Many thanks

Thank you so much for the video professor...

Your video helped me a lot!! Thank you!! You've got one more inscription in your channel.

دكتور احمد شرح اكتر من رائع. لو في كورسات حضرتك بتقدمها اونلاين هكون سعيد جدا اني اشتريها

The CDP material data used in this tutorial is available for download (see link in video description) Correction @41:27 --> Selected mesh element family should be Truss instead of Beam since rebar parts were modeled using truss sections.

@nadaeljouchine6474

2 жыл бұрын

Hello sir, could you please cite the reference source (article) of the CDP data used in the tutorial?

@AElkady

2 жыл бұрын

​@@nadaeljouchine6474 there is no reference. A generic concrete compression test is used to define the CDP. You can find many in literature.

Great tutorial! Thank you.

Dear Dr Ahmed, should we always use dynamic explicit analysis when using CDP and RC structure analysis?

Hello. Thank you for your videos, they are very helpful in learning Abaqus . Tell me how to take into account your own weight when calculating reinforced concrete beams .I understand that the load is set through the force of gravity ,but what is the amplitude to take ?

very nice lecture to watch

Hello Dr. Elkady, thanks for your video, please do a tutorial on simulating a beam under fire in Abaqus.

Hello, would you please share your material library. In particular, I am interested in looking how you defined the combined hardening parameters for the other steel materials

thankyou professor for this amazing video tutorial 👍👍. you gave amplitude as 0-0 and 10-1 instead if we increase from 10-1 to 20-1 does the Analysis run faster

thank you sir.. if possible share latest other videos related to this course

Thank you sir, this video is very useful. However, is it possible to comsider the creep and shrinkage on concrete in Abaqus. If yes, could you please let us know how to do that? Thanks in advance.

Thanks for your tutorials. I want to ask u, how to reduce the initial stiffness of beam in abaqus?

Dear Dr Ahmed，Thanks for your videos. And how to obtain from ABAQUS the length of bond slip between reinforcement and concrete in the pull-out test?

Thank you for the complete guidance that you provided on the procedure on modeling in Abaqus. This is what I need for my thesis project. I replicated what you did and I submitted a job on abaqus. But I am unable to get result yet. Abaqus has been trying to process the job for 1 hour now. It shows on the status “running”. Is this normal? How long does it take to complete the analysis process on Abaqus?

Hello Dr Ahmed, I have questions on 4 Point bending but the beam are reinforced with CFRP bars for its tension bars. What properties shall be inserted for the CFRP material and where can i get the data? Hope you can help on this. Thank you Dr.

Hello Dr. Ahmed , I have watched thousand of tutorial but this one is the best to be honest and very usefull thank you ! I am modeling a cantliver beam with prestressed tendon and reinforcement so I need to get results about long term deflection , creep and shrinkage effect , so do you have any similar videos that can help ? Your help is much appreciated looking forward to hear you response than you

Great video, thank you very much Dr. Ahmed for sharing your knowledge. How much time did the running take you?

@AElkady

3 жыл бұрын

Depends on how fast your PC is, how may cores you use and the amount of data you save. I used 6 cores at 4Ghz and I believe it took about 6 hours

Thanks for your activities. I need an example of a composite beam( steel beam with RC slab)

Dear Dr. Ahmed, How do we model prestressing in abaqus?

Sir thank you for sharing the tutorials...Hope to see more.... Sir I have one question, Suppose I am simulating an air blast experimental test on reinforced concrete slab modelled using CDP model and Johnson cook model for steel, how can I understand the slab is failed or not. I tried to do the same but from deflection time history I understood that the maximum deflection have gone to the level of 20cm after which there is no change in deflection. But it is obvious that a slab cannot deflect that much. The time period given in step module is 0.01 and I am using explicit analysis using conwep airblast. Can you give me some suggestions?

Thank you for this detailed explanation. This was very helpful. I have a question concerning the loads. If we want to apply pressure on the top surface of the steel support instead of displacement is it possible? If yes what are the boundary conditions we have to add? (This work will help me a lot in my thesis work)

Sir, when inputting the load in nonlinear analysis. Do we input the load just with the time and displacement without the external load ?

I'm using a compression analytical expression described in Eurocode 2 for cdp model, would you mind proving us with the tension expression so I can use it inelastic cdp model

Thank you for this tutorial, please can you make a tutorial video about tensile lap splices in concrete beam in Abaqus

How can we see the direct cracks (instead of color change) in this model?

sir, in which point we can record the load and deflection. so that we can plot the load-deflection behavior of this beam

Hello Dr. Ahmed , I have watched thousand of tutorial but this one is the best to be honest and very usefull thank you ! I am modeling a Shear behavior of reinforced concrete beams with web opening near supports strengthening by prestressed strand, so do you have any similar videos that can help ? Your help is much appreciated looking forward to hear you response than you.

Hi Dr Ahmed , have you ever used cohesive element in your modelling to define the concrete -concrete interface for concrete cast at differrnt times ?

@mikiasfekadeselassie9072

Ай бұрын

@magedqasem7403 did you find the answer?

Dear Dr. Ahmed Elkady, all of your videos are very informative, thank you so much for preparing them. I have one quick question. Should the element type of rebars be "Truss", which is T3D2? Thank you!

@AElkady

2 жыл бұрын

Yes correct. Note although I may have mistakenly selected a beam type element, ABAQUS ignored that when the job is submitted and T3D2 was used instead.

@easonlu8192

2 жыл бұрын

@@AElkady Understood. Many thanks!

Hello dear Ahmed . If I use KN and meter .What is the unit for the density of concrete ? Should I keep it in KN/m3 ?

Thank you again Dr. Ahmad..If we modeled half of the beam to be more efficient, what would be the constraint on the symmetrical face of the beam (mid-span)? Any suggestion?

@AElkady

2 жыл бұрын

applying symmetry in the transverse direction will be not be appropriate in that case since this pinned-roller beam is allowed to deform in the longitudinal direction (even at mid span)

thx for this help, can you help me with this error and how to solve this (ERROR in job messaging system: Error in connection to analysis) ??

Hello, Dr. Ahmed Elkady! I have another concern. How to determine the maximum shear stress and bending stress for RC beams under 4-point Bending Test?

Hello dear sir, I have made a pool contruction with almost the same steps as you have done in the video, but under Edit job --> Precision , i can't change the Abaqus/explicit precision bar to Double - analysis + package. Abaqus won't let me change it. Is it something wrong with my license, or is it a system fault in my model?

You used truss type sections for reinforcement but meshed them as beam elements. Should truss elements have been used while meshing?

Thank you Dr. Ahmad, this was very helpful. at 37:10 you mentioned that having a reference point at the support and at the applied load is the recommended way and then you referred to another video. Could you please refer me to that video where you have explained this. THX

@AElkady

2 жыл бұрын

Please check video #14 in the tutorial series

Dear Dr. Ahmed, what should I do if there is warning appears "OP=NEW on *CONTACT is ignored when the general contact definition is specified as model data"?

Dear Sir! I highly acknowledge your efforts regarding this informative guide. I have few questions. Would you please answer? 1) Around 14:55 (in your tutorial), under 'Concrete Damage Plasticity ; a) Under 'Concrete Compression Damage', what values you've used for 'Yield Stress' and 'Inelastic Strain' for 'Compressive Behavior'? b) Under 'Concrete Tension Damage', what values you've used for 'Yield Stress' and 'Cracking Strain' for 'Tensile Behavior'? (Actually Sir I'm following your data while modelling (a typical beam) to have an accurate sample like you because I'm a beginner in ABAQUS). 2) Why do we use reinforcement as a 'Truss type element" instead of the beam? 3) What might happen if we draw the parts randomly instead of very correct according to the reference axis as you did for stirrups? Why can't we draw them randomly and later on put/draw their exact dimensions? (In fact, my supports and reinforcement locations aren't exactly the same (after assembling them) as yours, maybe it is due to not drawing them exactly as per axis (as you did). I am waiting for your very kind response. Thanking you in anticipation.

@AElkady

2 жыл бұрын

Please check the video tutorial on the CDP material model. The used CDP material data are available to download in the description. You can used either truss or beam elements for the rebars. You can draw the parts randomly. ofCourse, doinf this with reference axis make the assembly process easier.

@romiyon_

2 жыл бұрын

@@AElkady Thank you very much Sir for your very kind response. Can I please contact you/ask questions next time in case I come across any difficulty/problem in ABAQUS? Thank You.

Hello Dr. Ahmed, since the dimensions of the part are in mm, shouldn't the density be 2.5e-06 kg/mm^3 instead of 2.5e-09 kg/m^3 ?

@AElkady

Жыл бұрын

In ABAQUS, if you are using SI (N and mm) units, then mass is defined in tons and density is defined in ton/mm3.

Hello Sir. Thank you for your videos. I'd like to ask you: how could I get the vertical force - vertical displacement curve of beam mid span section?

@AElkady

3 жыл бұрын

Please check this video kzread.info/dash/bejne/oq2hz9iboJexqps.html

@simonega740

3 жыл бұрын

@@AElkady Thank you for your help!

dear dr.Ahmed,thank u for ur tutorials they all very impressive and I learned about ABAQUS.my question is when ever I define concrete damage placiticity I recieve messege in job submission that `` cap placiticity,concrete damage placticity .......etc´´exclussive..why this happens? thanks, Avin

@AElkady

2 жыл бұрын

Please state the full error messgae

@avinqadir4108

2 жыл бұрын

@@AElkady Thank u so much for ur reply, I solved the issue I was defining plastic and concrete damage plasticity. But now I am getting another error said "the independent variables must be arranged in ascending order. This error may have been caused by a possible empty line on the datacards in the property definition"...so I dont know where exactly I have to fix this

Dr Ahmed, you mentioned at time 2.01 minute to be more efficient to make use of symmetry you model half of the beam, but if assign the symmetry boundary condition to either main or transverse reinforcements, a warning of the overconstrained condition on the reinforcing bars will be shown due to the embedded constraints and the applied symmetry conditions. Is there any way to resolve this problem noting that I'm using the implicit solver method? Thank you.

@AElkady

2 жыл бұрын

A simple solution would be to create a small partition in the rebar lements near their edge. Use this partition to apply the symmetry BCs and excllude it from the embedment BCs.

@magedqasem7403

2 жыл бұрын

Thank you Dr@@AElkady for reply , i will try this method

Dr. Ahmed it is a great modeling..I would like to invite you to publish a paper together in this subject in an Elsevier journal. Dr.-Ing. Nazim Nariman

can we have the .inp files for these lectures?

super

42 nodes on an embedded element do not lie in any host element. Check coordinates, exterior tolerance and absolute exterior tolerance parameters, and the host element set definition. The nodes have been identified in node set ErrNodeEmbeddedNode. 994 elements have missing property definitions. The elements have been identified in element set ErrElemMissingSection. Analysis Input File Processor exited with an error.

@civilengineeringknowledgeb2955

7 ай бұрын

what can I do please?

Hello sir Ahmed, can you help me please to modeling RC beam with EST CFRP

assalamou alaikoum, thank you very much Dr. Ahmed , this is a great video , i would like know which mark of CPU your PC ? please reply me .

@AElkady

10 ай бұрын

i9-9880H CPU @ 2.30GHz 2.30 GHz

@benmeloukaabdelkader737

10 ай бұрын

@@AElkady Thank you very much sir.

Thank you for sharing your video, sir. I have a question. May I know why you use dynamic explicit analysis instead of static analysis, because the 4-point loading test is a typical static test for static analysis, however, explicit analysis in ABAQUS is used for impact or other dynamic analysis related to time variables.

@zelongjiang7934

2 жыл бұрын

So, I am wondering if I can follow your method to do the static test analysis for RC beam.

Hi dr. Did you notice that the stress in the tension area turn into compression after certein point?

@AElkady

Жыл бұрын

Not sure i noticed that

hello DR, i want to know how i can interaction between UHPC and beam if i strengthen this beam by UHPC LAYER ?

@AElkady

9 ай бұрын

I recommend that you check available research publications since there are several researchers that developed FE models for this case.

Thank you Dr.Ahmed How I can modeling two types of concrete at the Same beam Can you help me?

@AElkady

Жыл бұрын

Partition the solid elements and assign different sections/materials accordingly

Dear Dr. Ahmed, can you tell me why I get this error: Abaqus could not locate the package_dp executable. This may indicate that this component is not installed. Please contact your system Administrator for further assistance

Hola te saludo de Mexico estoy viendo tu video y me pareció agradable, mis comentarios; no muestras las propiedades del concreto en sus tablas de daño en compresión y tensión. Esta parte es fundamental para realizar el análisis. Es correcto que tomas los materiales de tu librería, pero para mostrar un buen video está parte faltaría en el material. Así como las propiedades del Acero en su totalidad.

Hello, Dr.. Ahmed Elkady. This is a great video. I learned a lot! But I have a situation in my work - I already done my modeling, steps, interaction, and all based on the sample on your video, and yet, I come up with no results in the Visualization. I only did what is told on your video.

@AElkady

Жыл бұрын

If you are using explicit solver, make sure that the field variables are saved every time step that is smaller than the step time (Check the fied variable request).

@bonjoebeebello2560

Жыл бұрын

@@AElkady Sorry for this comment. It just happen that I click the results in the UI and not in the job. Sorry Dr. for the inconvenience. So, when I click the results in the Job, that is where the results came in. Thank you for answering my querry, Dr.! You're such a lifesaver in Abaqus tutorial!!!

@bonjoebeebello2560

Жыл бұрын

@@AElkady I have another concern about this tutorial, how to graph the Force vs Displacement (Midspan) for this 4-point bending test? I have watched your other tutorial here: kzread.info/dash/bejne/oq2hz9iboJexqps.html where you have extracted the Force vs Disp graph from the Column Base (Reaction/Force) and the Displacement in the Beam end.

In element type of meshing part of steels why you choose beam in family ?

@AElkady

Жыл бұрын

Beam elements are generally better as they can capture rebar buckling if it takes place

Am asking for your contact details I have serious problem in Abaqus, am modelling Bamboo Scrimber material using a four point bending test. Bamboo Scrimber is a new material and how can I configure damage plasticity.

@er.mayankgangwar

3 жыл бұрын

can you share your email? i am also working on something related to bamboo

@eneskankaya6307

5 ай бұрын

Help me

assalam alikom dr ahmed thank you so much for your great effort , i tried to do the edit key but give me error that unknwn key word

@AElkady

2 жыл бұрын

This keyword is not available in early versions (pre 2019)

Dear Dr. Ahmed Elkady, Thanks a lot for your great presentation. I tried to do the same as per your instruction, However, end up with the error "994 elements have missing property definitions. The elements have been identified in element set ErrElemMissingSection. Analysis Input File Processor aborted due to these errors.difficult to find the error, as per me it is in order. please help me to find the reason for this error.

@AElkady

2 жыл бұрын

This means that some parts are missing a "section" property assignment. Make sure that you assign a section to each part. Also, make sure, that the mesh element category matches the assigned section property type.

@premasirikarunarathne5893

2 жыл бұрын

@@AElkady Thanks a lot for your response sir. Still difficult to find the error, I checked the elements through query information, Total no of elements are as follows. The total no of elements for reinforcement including stirrups is 994. but properties have already been assigned. your kind support in this regard is highly appreciated. number of elements: 14323 11781 linear hexahedral elements of type C3D8I 994 linear line elements of type B31 1548 linear hexahedral elements of type C3D8R properties have been assigned for all elements. what is type B31 elements

@AElkady

2 жыл бұрын

​@@premasirikarunarathne5893 you must sure the mesh element type matches the assigned section property type. For example, if you have assigned a truss section to the rebar, then make sure the assigned mesh element is also a truss element such as T3D2.

@premasirikarunarathne5893

2 жыл бұрын

​@@AElkady Thank you very much, sir. Abaqus automatically selects B31 type elements as the default for all reinforcement represented as truss elements in this case. B31 elements were manually adjusted as T3D2, and the error was eliminated. why Abaqus select B31 for truss by default and What's wrong with selecting B31 elements instead of T3D2.

Hello sir, I tried to submit the job from your CAE file, but it was aborted and this error showed: Process terminated by external request (SIGTERM or SIGINT received). Knowing that I neither killed the job myself nor changed the power source(unplugged my PC). I googled the error, but a lot of possibilities were to consider like meshing size, increments, odb size, cutting off the internet connection, what Do you think would be the problem! Please, if you have any idea this let me know, I'm kinda in a hurry. And thank you for your precious content.👍👍

@AElkady

2 жыл бұрын

This is most probably a license issue. Try running the job without using parallel CPUs.

@nadaeljouchine6474

2 жыл бұрын

@@AElkady thank you for your reply sir, I managed to fixe that! Neverstheless, I encountered another issue, the job kept running for almost 5 days that I had to kill it myself, the output tab shows constantly frame 11 and the progress freezed at some increment number without showing any error. Is that normal sir? Taking this much of time to run a job like this one? Thank you

Sir i need tutorial for fracture behaviour in abaqus for project if you have upload it sir

@AElkady

2 жыл бұрын

hopefully soon.

Dear Dr. Ahmed, How to solve this error "THE MATERIAL OPTIONS *CAP PLASTICITY, *CAST IRON PLASTICITY, *CLAY PLASTICITY, *CONCRETE, *CONCRETE DAMAGED PLASTICITY, *DRUCKER PRAGER, *FOAM, *CRUSHABLE FOAM, *MOHR COULOMB, *JOINTED MATERIAL, *PLASTIC AND *SOFT ROCK PLASTICITY ARE MUTUALLY EXCLUSIVE" in the ABAQUS.

@AElkady

Жыл бұрын

This means you can not use two of these material models in the same time.

@sairamvegicharla925

Жыл бұрын

@@AElkady No sir. I am using only "CONCRETE DAMAGED PLASTICITY" material model as you have done in your video. But I am getting the error "THE MATERIAL OPTIONS *CAP PLASTICITY, *CAST IRON PLASTICITY, *CLAY PLASTICITY, *CONCRETE, *CONCRETE DAMAGED PLASTICITY, *DRUCKER PRAGER, *FOAM, *CRUSHABLE FOAM, *MOHR COULOMB, *JOINTED MATERIAL, *PLASTIC AND *SOFT ROCK PLASTICITY ARE MUTUALLY EXCLUSIVE" in the ABAQUS".

@sairamvegicharla925

Жыл бұрын

Sorry sir. I understood your reply. And solved my error. Ok sir. Thank you.

abaqus needs parametric design library for structural elements. Modelling each element one by one is not practical for professional use because most of the time structural engineers have limited time for design/analysis process. I cannot imagine designing a building with abaqus.

@AElkady

8 күн бұрын

Yes. You can also create an abaqus GUI plugin with a section or material library. Some videos available online for the process.

How to choose the needed amplitude for the loading step ?

@khaledghaedi8564

3 жыл бұрын

for loading step, you have many choices. For instance, you can design the displacement cyclic load protocol based on FEMA-461. Also, you can use the EC2, table 3.1 utilizing compressive stress and strain values. Meanwhile, you can subscribe to our youtube channel here to get the latest updates: kzread.info

Would you mind providing me with your email, please?

hi sir, how to get the material library. Its already there in your database. How would I get it ?