Learning Forum

[VeraL]

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]

nnPlease see if the following provides some help?n/forum/discussion/2760/unable-to-define-czm-bilinear-or-exponentialnRsgards,nAshish Khemkan