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  1. Hi, thanks for replying me! I tried using Failure Criteria (Chang) but I obtain only error #44 (abnormal error). I tried adding on Material description the TOTAL TENSILE FAILURE dir 1 and 2 to show me if some layer or element failed (using control card ANIM_SHELL_TENS_STRESS_ALL and ANIM_SHELL_TENS_STRAIN_ALL )...am I wrong? Thanks for the help
  2. Hi, I create a Material Law Type 25 (Orthotrophic Shell) and then create a Property law type 11 (Sandwich Shell). My Sandwich shell is made by 5 layer of the same material and I create it in property. I used Tsai-Wu failure model and I add all the "Yield Stress in direction 1-2 an 12"; while for "Total element failure criteria" I choose "0" option. How can I understand if my laminate will brake or not during the impact? I have to choose some particular control card? Another question: In post-processing to show the Von Mises stress I choose two different control cards: - ANIM_ELTYPE_RESTYPE -ANIM_SHELL_TENS_RESTYPE With first control card I obtain a stress of about 50 MPa while with the second one I obtained a stress of about 500 MPa. How can I understand which is the correct one? Thank you for the help!!
  3. Hi, I want to know if is possible to show the forces between a panel and an impactor during a drop test. I tryed using Th/Inter but the values I see in the plot (using Hyperview function CONTACT FORCES --> MAG) and the ones in the graph (using Hypergraph INTERFACE/THinter --> CONTACT INTERFACE "1" --> RESULTANT NORMAL FORCE) are very different! TH INTER shows the resultant force in all the contact surface? Hyperview function shows the local force in every single element? Hoping to receive an answer Thanks
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