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  1. Hussain2339

    Excessive deformation errors

    Dear all, I am simulating the point load on top aluminium heads. I have assigned surface-to-surface interaction between the bearing plate and the TOP Hat. Because the model is very complex, I am using dynamic explicit model. It is giving me an error of excessive deformations. What possible...
  2. Hussain2339

    Deflection time history

    The plate is fixed on the edge,and it represents the same support condition as in the experiment The projectile is a deformable body with rigid body constraint
  3. Hussain2339

    Deflection time history

    Load is applied as velocity to the reference point of projectile Pice-wise linear plasticity model (Elasto plastic model) For rest info please see the photo attached
  4. Hussain2339

    Deflection time history

    Dear all I am doing timber impact on the aluminum plates. My numerical and experimental curves have some lag. Can you please advise, on how can I improve the model? Picture is attached
  5. Hussain2339

    Acceleration of Projectile In Impact test

    By n Abaqus wants that at which interval should the outcome be given I put n=1 or n=20 the results are different
  6. Hussain2339

    Acceleration of Projectile In Impact test

    Thanks for your response FEA I did try that. The problem is when I get out put at n=1 and then at n= 20 Its different
  7. Hussain2339

    Acceleration of Projectile In Impact test

    Dear All, I am simulating the Impact test as shown in the Figure. I want to get the acceleration of the projectile after impact. There are 2 ways of doing that. Which one seems to be correct? 1. I get the acceleration of the central model at the surface of the projectile 2. I Find the...
  8. Hussain2339

    IMPACT FORCE ON ALUMINIUM PANELS

    I have validated 5 different studies already published in the literature with this model. It works well for other studies. One possible reason can be I am looking at the wrong output from the model.
  9. Hussain2339

    IMPACT FORCE ON ALUMINIUM PANELS

    Dear all, I am dropping a projectile of 4 kg m with a velocity of 1.41 m/sec on an aluminum plate. The acceleration/deceleration I get from the Numerical model is 160g and from the Experiment is 3 gs. Can any one advise please what can be the issue?
  10. Hussain2339

    4 Point bending test -Abaqus

    Thanks for your reply I used automatic stabilization in step settings The job was completed but weird results
  11. Hussain2339

    4 Point bending test -Abaqus

    find attachedhttps://files.engineering.com/getfile.aspx?folder=edcbe5a0-7310-468c-baee-a17b763ff46f&file=390Orignal.cae
  12. Hussain2339

    4 Point bending test -Abaqus

    find attached
  13. Hussain2339

    4 Point bending test -Abaqus

    Thanks for your response I am uploading the cae file if you can help me, please The message is aborted. increment size is less mesh (10x10), material model (piece wise linear plasticity model) , step type (General static), interactions (Tried all but these results were with general body...
  14. Hussain2339

    4 Point bending test -Abaqus

    Dear all I am doing 4 points bending test in Abaqus. After achieving some results, it's aborted. The results obtained for the simulated part show close agreement I have tried different mesh sizes, interactions but all in vain
  15. Hussain2339

    Time increment required is less than the minimum specified

    Dear All, I am simulating a 4-Point bending test and I got the following error. Error in job Small: Time increment required is less than the minimum specified Error in job Small: THE ANALYSIS HAS BEEN TERMINATED DUE TO PREVIOUS ERRORS. ALL OUTPUT REQUESTS HAVE BEEN WRITTEN FOR THE LAST...
  16. Hussain2339

    Normal cannot be completed in 4 elements

    I am using general body contact. No Tie constraint. That issue was resolved by adjusting mesh sizes. Now I have got another error. The time increment required is less than the minimum specified Error in job Small: THE ANALYSIS HAS BEEN TERMINATED DUE TO PREVIOUS ERRORS. ALL OUTPUT REQUESTS...
  17. Hussain2339

    Normal cannot be completed in 4 elements

    Dear all, I am simulating 4-points bending on extruded panels. I came across an error that "Normal cannot be completed in 4 elements". Can you please advise how to fix this?
  18. Hussain2339

    Force~Time history

    I repeated the test and also tried different boundary conditions. This is the closest I could achieve.
  19. Hussain2339

    Force~Time history

    @FEA and NRP Thank you very much for your response. I am using velocity to the projectile and comparing from the point of impact. The difference of time period is almost 10 times.
  20. Hussain2339

    Force~Time history

    How can we apply gravity load to the dynamic tests? It won't hit the plate

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