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Plastic UMAT for Abaqus

Plastic UMAT for Abaqus

Пікірлер

  • @MaitryPrajapati-b5y
    @MaitryPrajapati-b5y2 күн бұрын

    How have you taken the values of tensile strength and compressive strength and others?? how you find that values?

  • @engineering_software
    @engineering_software2 күн бұрын

    @@MaitryPrajapati-b5y please send us an email to send references.

  • @muhammadwaseem-xm2co
    @muhammadwaseem-xm2co3 күн бұрын

    Hello sir, I have a hexahedral multi-block structured mesh in ICEM CFD, I got some results from this mesh. Now, I have to do a mesh independence test. Please tell me which is the correct way to increase the number of mesh elements: Should I 1) Re-mesh the whole geometry with smaller element size 2) increase the number of nodes in each block. 3) increase the scale factor like 1.2 or 1.3 etc.... Thank you!

  • @muhammadwaseem-xm2co
    @muhammadwaseem-xm2co3 күн бұрын

    Hello Everyone! I have a hexahedral multi-block structured mesh in ICEM CFD, I got some results from this mesh. Now, I have to do a mesh independence test. Please tell me which is the correct way to increase the number of mesh elements: Should I 1) Re-mesh the whole geometry with smaller element size 2) increase the number of nodes in each block. 3) increase the scale factor like 1.2 or 1.3 etc.... Thank you!

  • @sebakoli6781
    @sebakoli67814 күн бұрын

    Thank you for the detail explanation. But, how can I incorporate nonlinear hardening instead of linear hardening? At 7:41, the derivative of function 'f' w.r.t 'Δp' would not be (-3G-H) for nonlinear hardening. For example: derivative of linear hardening (HΔp) is 'H' but for power hardening law [H(Δp)^n], its derivative would contain Δp itself. Should I replace 'H' with [n*H(Δp)^(n-1)] in 'dΔp' expression and solve accordingly? I am not sure if you got my point or not. I hope you would provide some help and suggestions. Thank you again. Waiting for the response...

  • @user-jo3vn4ni7g
    @user-jo3vn4ni7g8 күн бұрын

    ty

  • @Bistaolee
    @Bistaolee9 күн бұрын

    Thank you for this vidéo i have à question which curve we can plot in this simulation exept force-displacement ????

  • @johanharamboure5743
    @johanharamboure574310 күн бұрын

    Hi, thank you very much for these explanations ! One question though, how come the deformation increment is an input to the algorithm, when it depends on the deformation at step k+1? And tell me if I'm wrong, but it seems to me that this algorithm is not compatible with an explicit approach, given the sub-iterations required to calculate the plastic deformation increment.

  • @engineering_software
    @engineering_software9 күн бұрын

    First about the implicit solver, in each increment several predictions and corrections for the final displacement happen, named as iteration. In each of these predicted displacements the UMAT is called and the stress is calculated. Please see this video to understand the implicit flowchart better. kzread.info/dash/bejne/eXh7xbCQgqatZbA.htmlsi=iudM-PHv31iCZx_8 The explicit is totally different and we will discuss its algorithm and differences of UMAT and VUMAT in future videos.

  • @niklausory8747
    @niklausory874714 күн бұрын

    as of 2:17 mean stress relaxation you are in strain control ? and it is not shown here but do you reach a limit in the hysteresis ?

  • @farsiplier1165
    @farsiplier116518 күн бұрын

    Thank you soo much. Your videos are really great. I wish you the best.

  • @ahmedabouseeda4549
    @ahmedabouseeda454925 күн бұрын

    the best video I have ever seen to explain the main problem in Abaqus

  • @hcdeng1283
    @hcdeng128326 күн бұрын

    Before watching this video, please read some textbooks about numerical analysis.

  • @hishamtariq7054
    @hishamtariq705426 күн бұрын

    Excellent explanation !

  • @kar-dt1hk
    @kar-dt1hk27 күн бұрын

    thank you sir for this video , i have modeled hollow sphere under internel radial displacement the material made of hyperelastic nehookena model, , sir how i can creat submodel for my problem ,pleases sir

  • @engineering_software
    @engineering_software27 күн бұрын

    Is your main model shell or solid. What about the submodel?

  • @kar-dt1hk
    @kar-dt1hk27 күн бұрын

    @@engineering_software i have used axisymetric for modeld hollow sphere,has an internel radius A and externel radius B

  • @engineering_software
    @engineering_software27 күн бұрын

    @@kar-dt1hk Why you don't follow the method of this video?

  • @yusufbabatunde2913
    @yusufbabatunde291328 күн бұрын

    Very insightful and informative video. Thumb up 👍

  • @arnobbaiga318
    @arnobbaiga318Ай бұрын

    Sir,In dynamic explicit if i normalize my step time do i have to normalize my input time (used in boundary condition)

  • @engineering_software
    @engineering_software28 күн бұрын

    When an amplitude is defined in boundary condition the timing is set by the step time.

  • @AbdulR-MannanB-
    @AbdulR-MannanB-Ай бұрын

    THANKS FOR VALUABLE INFORMATION

  • @KoreaPanorama
    @KoreaPanoramaАй бұрын

    So informative video. Thanks a lot for sharing your knowledge and experience.

  • @fatemej689
    @fatemej689Ай бұрын

    Yes

  • @ParameswaranPed22d008
    @ParameswaranPed22d008Ай бұрын

    Simple and good explanation. Thanks a lot

  • @rakeshbose6280
    @rakeshbose6280Ай бұрын

    Sir how you calculated the energy for damage evaluation

  • @structurelearninghub3340
    @structurelearninghub3340Ай бұрын

    Is same procedure can we apply for constitutive model of steel?

  • @engineering_software
    @engineering_softwareАй бұрын

    This constitutive equation (Mises Plasticity) is useful for most of metals. Just the material should be isotropic. For example it is not suitable for steel sheet produced by rolling process. In some cases the type of hardening should also change.

  • @structurelearninghub3340
    @structurelearninghub3340Ай бұрын

    @@engineering_software i want to develop a UMAT for reinforcement rebar using Menegotto pinto steel model just to account hysteresis effect.

  • @structurelearninghub3340
    @structurelearninghub3340Ай бұрын

    @@engineering_software i am taking about the stress-strain constitutive model of reinforcement rebar

  • @structurelearninghub3340
    @structurelearninghub3340Ай бұрын

    Can you provide reference to learn continuum mechanics to understand in detail

  • @fatemej689
    @fatemej689Ай бұрын

    Good 👍

  • @KoreaPanorama
    @KoreaPanoramaАй бұрын

    Thanks for sharing this informative video ❤❤❤

  • @sohrabkolsoumi990
    @sohrabkolsoumi990Ай бұрын

    Thank you for sharing ❤

  • @Visionary_Visions-122.
    @Visionary_Visions-122.Ай бұрын

    could you please make a tutorial of thermoforming process on a composite material

  • @MirgenMiro-dv2hf
    @MirgenMiro-dv2hfАй бұрын

    Best channel in continuum mechanical

  • @lakshmireddy5743
    @lakshmireddy5743Ай бұрын

    Amazingly explained but there is no further videos added in continuation 😢

  • @engineering_software
    @engineering_softwareАй бұрын

    Hope we can complete this series in near future.

  • @Mujungu
    @MujunguАй бұрын

    how can i implement XFEM in ANSYS PLEASE HELP ME

  • @SubhashChandra-ym3tj
    @SubhashChandra-ym3tjАй бұрын

    very systematic explanation. Thanks a lot

  • @drury2d8
    @drury2d8Ай бұрын

    Hi, can shell elements be used for evaluation of triaxial stress in thin sheet metal ?

  • @Concreteblockmachineug
    @ConcreteblockmachineugАй бұрын

    Very Informative video, Have been using merge feature but was shocked to learn that there is embedded region too

  • @Bistaolee
    @Bistaolee2 ай бұрын

    Excellent work, if the materials is multidimensionnelle fiber we shoud do the same sbrotine or change it ??

  • @engineering_software
    @engineering_softwareАй бұрын

    If you mean that you have a laminate that each layer is unidirectional you can use this subroutine for each layer and assign material orientation to each layer based on fibers direction.

  • @mariogalindoq
    @mariogalindoq2 ай бұрын

    Very very good serie of videos. Thanks a lot. This series is the best I found about plasticity in the internet. Please consider doing the same for Drucker-Prager model. I am using your material with my students.Thanks again.

  • @engineering_software
    @engineering_software2 ай бұрын

    I am really grateful for your motivating comment.

  • @sohamdesale9707
    @sohamdesale97072 ай бұрын

    How can I do same for cylinder Matrix please guide

  • @engineering_software
    @engineering_software2 ай бұрын

    Did you checked your email?

  • @sohamdesale9707
    @sohamdesale97072 ай бұрын

    @@engineering_software yes I did and also gave you details but sir no reply from your side

  • @engineering_software
    @engineering_software2 ай бұрын

    @@sohamdesale9707 I replied 4 hours ago. please check and reply in email.

  • @kar-dt1hk
    @kar-dt1hk2 ай бұрын

    can you pleaes make ideo about static riks method , i have modeled hollow sphere hyperfoam under internel pressure, my probleme i dont know how plot pressure function deformed inner radius

  • @engineering_software
    @engineering_software2 ай бұрын

    Please check this video which may help: kzread.info/dash/bejne/YqKepMawl5rAaaQ.htmlsi=7zeKcIlQEjthjoWY

  • @user-un3tw8qk7p
    @user-un3tw8qk7p2 ай бұрын

    thank you so much .great work

  • @fatemej689
    @fatemej6892 ай бұрын

    Thanks for sharing

  • @CExercises
    @CExercises2 ай бұрын

    This code saved my time! thank you!

  • @rasoulghadimi3546
    @rasoulghadimi35462 ай бұрын

    thanks, if the voice was real it was more enjoyable

  • @sohamdesale9707
    @sohamdesale97072 ай бұрын

    Could you please upload video for randomly distributed inclusion in 3 D cylinder

  • @engineering_software
    @engineering_software2 ай бұрын

    The code is available please send us an email [email protected]

  • @sohamdesale9707
    @sohamdesale97072 ай бұрын

    I checked it on web but it is for cube. Can I get is same for cylinder. I am ready to purchase.

  • @engineering_software
    @engineering_software2 ай бұрын

    @@sohamdesale9707 please check your email

  • @azarbanafshi
    @azarbanafshi2 ай бұрын

    Hi, thank you for your great videos. I have a problem with the running the script in Abaqus. I get the typeerror: 'float' object has no attribute '__getitem__' error for line 95. could you please help me with fixing the error?

  • @engineering_software
    @engineering_software2 ай бұрын

    Please find codes in our website or send us email engssoft.com [email protected]

  • @sohrabkolsoumi990
    @sohrabkolsoumi9902 ай бұрын

    It was fantastic tutorial. ❤

  • @CExercises
    @CExercises2 ай бұрын

    Thank you for sharing!

  • @fatemej689
    @fatemej6892 ай бұрын

    Thanks for sharing

  • @sohrabkolsoumi990
    @sohrabkolsoumi9902 ай бұрын

    It was useful❤ thank you for sharing!

  • @engineering_software
    @engineering_software2 ай бұрын

    Thanks for your kind comment!

  • @deniromadhon9494
    @deniromadhon94942 ай бұрын

    What name aplication ????

  • @AgriMetSoft
    @AgriMetSoft3 ай бұрын

    Thank you for sharing!

  • @CExercises
    @CExercises3 ай бұрын

    Informative and useful!

  • @kar-dt1hk
    @kar-dt1hk3 ай бұрын

    can you please give me the mathematical expression for this model hyperfoam using by abaqus

  • @yusufbabatunde2913
    @yusufbabatunde29133 ай бұрын

    The video is highly educational. It presents the problems and solutions to issues that most people are not aware of. Thank you for sharing.

  • @engineering_software
    @engineering_software3 ай бұрын

    Thanks for your encouraging comments.