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  1. loyal979

    Adhesive Layer in Wood

    Hello all, I am working on modeling two layers of wood bonded together with glue. To model the adhesive/glue layer in Abaqus, there is the cohesive zone method, but this method is intended to investigate failure/damage such as delamination. My goal is to evaluate the the effect of the adhesive...
  2. loyal979

    VUSDFLD Subroutine

    Hello, This error related to your subroutine or the material definition. Since you did run your subroutine for 1 element and it was working fine. if you have added extra lines in your subroutine, check the keywords used and go through the code's lines to see if there is any unnecessary wording...
  3. loyal979

    UFIELD Subroutine

    ...1 DTEMP(NSECPT) C C Evaluate change in Temp. and send it back to abaqus as a state variable C CTem = (mc * Qvap) / (ASPECHT * AMass) C CMC = DTEMP(1) CTem = (CMC * 3349440.) / (1000. * 0.24) FIELD(1,1)= CTem FIELD(1,2)= CTem+20. C C RETURN END...
  4. loyal979

    ABAQUS Subroutine

    Hi all, Can I use Abaqus subroutine to compute temperature for each node and send it back using dependent state variable (i.g. STATEV in UMATHT)? Thanks in advance
  5. loyal979

    ERROR: Couldn't find ABAQUSLM running on "server"

    This error appears whenever I run to verify for example abaqus -user_std or abaqus verify -all or abaqus verify -std. What should I do if the issue is related to firewall? Note: There is no issue when I run an Abaqus job without subroutine.
  6. loyal979

    ERROR: Couldn't find ABAQUSLM running on "server"

    Hi all, I am having this problem when I try to run verify commands such as abaqus verify -user_std to verify that I have linked Fortran to ABAQUS correctly. However, I get the following error and I am not sure what is causing this to happen. Please let me know if you have any suggestions...
  7. loyal979

    Configuring Abaqus to Run Fortran Subroutines

    I am using Abaqus 2017. Do I have to use intel Fortran?
  8. loyal979

    Configuring Abaqus to Run Fortran Subroutines

    Hello all, I am trying to link the new tool from intel to ABAQUS to be able to run subroutine. However, it seems the new toolkits from intel (intel OneApi HBC)is not compatible with abaqus. I do not have access to intel parallel studio, my license has expired. Is there other options or ways to...
  9. loyal979

    Compression Test

    Hello All, I am working on compression after impact simulations. Currently, my simulation is still running but I am monitoring my simulation and I noticed a lot of oscillations in my force (or stress-strain curve) while I don't see this behavior experimentally. I have attached an image of my...
  10. loyal979

    ALLSE -Strain Energy in impact simulation

    Thank you FEA way for your response. ALLAE is zero in my case because I am doing a fully integrated analysis (C3D8). I just was curious about the strain energy ALLSE. My understanding is that this energy ALLSE should decrease as damage initiates. is that correct? or that decrease will happen...
  11. loyal979

    ALLSE -Strain Energy in impact simulation

    Hello All, I am performing impact simulations of composite materials in ABAQUS/Explicit. I am just wondering about the recoverable strain energy ALLSE, how do we interpret this energy in impact simulations? I have my ALLSE exactly the same as the internal energy (ALLIE) in the initial phase of...
  12. loyal979

    Absorbed energy from impact

    Thank you FEA way. If I have my time incrementation type is automatic, it should take care of the stable time increment and adjust it. What confusing me is that I have another model used it in a similar analysis (impact simulation). The only difference is that the mesh in the second model is...
  13. loyal979

    Absorbed energy from impact

    Thank you FEA for your help. So I have performed another simulation and I plotted the energies shown in the attached figure. The total energy is increasing and I am in the final stage of my research and I am kinda panicking from these results. Any idea why the total energy is increasing and...
  14. loyal979

    Absorbed energy from impact

    Hey FEA way, Thank you for your help and feedback. yes, I am doing explicit analysis (impact simulations of composites). I have run a test and requested ALLKE and ALLPD. The ALLPD output is zero. Also, my ETOTAL (total energy) is constant throughout the simulation. What does that mean?
  15. loyal979

    Absorbed energy from impact

    Hello I am performing an impact simulation of composite materials. I am just wondering how I would be able to calculate the absorbed energy from the kinetic energy. Is there a way to output the absorbed energy in ABAQUS? Thank you
  16. loyal979

    Modeling impact - Impactor velocity

    Thank you. I appreciate your help. The only thing that concerns me is the model stabilization after the impactor leaves the impacted plate. After the impact, the plate will be vibrating (Free vibration) and I am just wondering if I should increase the linear viscosity parameter in the step to...
  17. loyal979

    Modeling impact - Impactor velocity

    Thank you for your reply and suggestion. I like this approach. it would save me some time. So, Just to clarify, the results of the impact will be imported to the model with the compression setup. is that correct? Or you meant by importing the model along with the impact result from the ODB...
  18. loyal979

    Modeling impact - Impactor velocity

    Hey All, I am modeling an impact simulation of composite materials in ABAQUS explicit. I have two steps on my model, one for impact and then the second one for compression after impact. I have defined the impactor velocity as a predefined field (initial velocity). I could not deactivate this...
  19. loyal979

    Impact and CAI simulations

    Hello all, I am working on compression after impact simulations and just wondering on how to stabilize the plate after impact to perform the compression test. Would introducing rayleigh damping to the model be good method to do it? or is there another way more efficient? Please share your...
  20. loyal979

    impact contact force

    Thank you FEA way for your feedback.

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