Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

Register Log in
  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

Recent content by hrtuwair

  1. hrtuwair

    Solid vs. shell element in ABAQUS

    Dear All, I modeled a sandwich panel in ABAQUS. The pane thickness is 4.15 inch and the facing's thickness is 0.09 in. I modeled the core and facings using solid elements (C3DR) and results were in good agreement with experimental results. However, I am wondering is there a good arrgument to...
  2. hrtuwair

    Solid vs. shell element in ABAQUS

    Dear All, I modeled a sandwich panel in ABAQUS. The pane thickness is 4.15 inch and the facing's thickness is 0.09 in. I modeled the core and facings using solid elements (C3DR) and results were in good agreement with experimental results. However, I am wondering is there a good arrgument to...
  3. hrtuwair

    Solid vs. shell element in ABAQUS

    Dear All, I modeled a sandwich panel in ABAQUS. The pane thickness is 4.15 inch and the facing's thickness is 0.09 in. I modeled the core and facings using solid elements (C3DR) and results were in good agreement with experimental results. However, I am wondering is there a good arrgument to...
  4. hrtuwair

    Question in ABAQUS

    Dear All, I modeled a sandwich panel in ABAQUS. The pane thickness is 4.15 inch and the facing's thickness is 0.09 in. I modeled the core and facings using solid elements (C3DR) and results were in good agreement with experimental results. However, I am wondering is there a good arrgument to...
  5. hrtuwair

    Solid vs. shell element in ABAQUS

    Dear All, I modeled a sandwich panel in ABAQUS. The pane thickness is 4.15 inch and the facing's thickness is 0.09 in. I modeled the core and facings using solid elements (C3DR) and results were in good agreement with experimental results. However, I am wondering is there a good arrgument to...
  6. hrtuwair

    Question in ABAQUS

    Thanks for your reply. Yes, there is a suboption in the Elastic property called stress or Fail strain fail but whenever I used it, it gave me this error "The *fail stress option can only be used with plane stress elements". I think this is because I am using solid elements in the model. Thanks
  7. hrtuwair

    Question in ABAQUS

    Hello all, I am modeling a sandwich composite beam in ABAQUS. The material I am using is linear elastic up to failure. I defined E and v in the material properties but don't know where should I define the ultimate stress and strain (i.e. failure stress and strain). I tried to define them in the...
  8. hrtuwair

    Buckling failure

    Hello dears, I am trying to model a four-point loading test for hollow-rectangular beam made from GFRP. I build the model in ABAQUS and defined almost everything for the analysis except the failure mode I got from the experimental. This beam failed due to buckling of the webs but don’t know how...
  9. hrtuwair

    Buckling failure

    Hello dears, I am trying to model a four-point loading test for hollow-rectangular beam made from GFRP. I build the model in ABAQUS and defined almost everything for the analysis except the failure mode I got from the experimental. This beam failed due to buckling of the webs but don’t know how...
  10. hrtuwair

    Crushable Foam

    Thanks again, Acspain, I see what you mean. At this stage the Poisson ratio might not be an important key but am sure it will be for my later models. I believe it will play an important role as the foam I am verifying now will be the core a of sandwich beam structure, which the shear rigidity...
  11. hrtuwair

    Crushable Foam

    Thanks, you’re right. The Poisson ratio after the elastic collapse stress is reached and exceeded, i.e. on the plateau part is acceptable to use the value of zero (and I already did that in my model as attached in my previous post), but prior to crushing, in the linear stress-stain range, the...
  12. hrtuwair

    Crushable Foam

    Thanks for your recommendations. Most of your suggestion helped me a lot especially changing the element type. I attached the file again as I did some modifications. Interestingly, when I put the poison ratio zero, the force-displacement curve I got from ABAQUS matched the experimental curve and...
  13. hrtuwair

    Crushable Foam

    Thanks a lot for those tips. I will try them and update you. Another question please, regarding the stress-strain curve I got force-displacement curve from flat-wise compression test and convert it to stress-strain by dividing the applied force by the specimen area and deflection by the...
  14. hrtuwair

    Crushable Foam

    Hi all, I am a new user of ABAQUS and am trying to model a cube of sandwich panel, as attached. The stress-strain of the foam was obtained from a compressive test. Everytime I run the analysis, it takes too much time for the analysis and then got this error. " TIME INCREMENT REQUIRED IS LESS...
See more

Part and Inventory Search

Back
Top