application of fracture mechanics

Could cellular automata be used to model mechanisms (for quasi-brittle fracture) that occur at the meso-scale and then feed these mechanisms to a macro-scale finite element model? Is it possible to replace constitutive models with mechanistic models, simulating mechanisms that lead to fracture instead of formulating equations that predict failure? These are typical questions that have motivated my recent collaboration with Dr Anton Shterenlikht at the University of Bristol.

Can anybody help me in using smeared crack and cohesive zone modeling in concrete for different grades. I was actually facing problem in using the same to identify fracture parameters of concrete using ABAQUS. I will also be helpful if anyone let me know about an alternate method to find fracture parameters of concrete using ABAQUS apart from using models. Thanks in advance.......

hai friends,

me doing engineering design... my project tite is "interaction of stress intensity factor for perpendicular cracks" this is y final yr project....pls guide me finding problem & knowing about the fracture mechanics and the purpose of stress intenssity factor..i really need the ansys analysis procedure for creating perpendicular cracks... pls help me friends ...send some link or web page ..

 PLS send details to my mail id    ashwin.prabhu1990 [at] gmail.com