General Mechanical

General Mechanical

Questions about fracture criteria (VCCT) and cohesive zone model i engineering data

    • VeraL
      Subscriber

      Hello everybody,

      I’m currently working on delamination in composite materials and I got some questions because I didn’t find what I was looking for in the ANSYS HELP.

      My questions refers to « Fracture Criteria » and « Cohesive Zone » in Engineering Data .

      First, this is the help i'm refering to for my questions about Fracture criteria : https://ansyshelp.ansys.com/account/secured?returnurl=/Views/Secured/corp/v182/ans_frac/Hlp_G_STR_VCCT.html?q=bk

      In the different fracture criteria, what do represent zeta, xi (Bilinear fracture), n1, n2, n3 (Power law fracture) ?

      If they only are exponents without physic signification for the formulas, do you have reference/default values ? It’s written that they are material constants but I don’t have further informations. Indeed, I can’t have access to the articles quoted in the ANSYS HELP.



      Then, for my questions about « Cohesive zone » :

      -      Bilinear for interface delamination : what do represent the beta non-dimensional weighting parameter  ? Is the right way to represent it in this configuration ?

    • Ashish Khemka
      Ansys Employee
      nnPlease see if the following provides some help?nhttps://forum.ansys.com/discussion/2760/unable-to-define-czm-bilinear-or-exponentialnRsgards,nAshish Khemkan
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