Hello everyone, I am useing the CZM method researching the dynamic crack propation problem in composites,so I must have the UEL OR VUEL of cohesive zone elements in ABAQUS or other FEM software,at this moment,  i have a UEL of ABAQUS,so i have a question ,if i want to simulate the dynamic crack problem, can i use the UEL? Or must write my VUEL?

Everyone answer is welcome

If some people have the same researching plan ,we can communicate each other!

EMAIL:liuluguangwindows@msn.cn

Thanks

Hello everyone,I am researching the dynamic crack propagation problem using the cohesive element.At this moment, I am using the LS-DYNA (971)software's cohesive material model ,But it does't consider the penetration of bulk elements when the cohesive elements after deleted or not deleted. so the bulk will penetrate each other when under exterior dynamic load. From the literature, I know that many reserachers use the solver which is writern by themselves,and the cohesive element also writen by self. How can some kind expersist give me a tutoial ,Thanks.

Hello everyone, I am studying the dynamic crack initiation problem of composite material. Just like the below imagine ,a crack perpendicular to the interface of two different materials, under dynamic load, the crack will propagate, at the crack tip I use the singular element to simulate the stress and strain state. after I have the crack tip stress, how can I calculate the energy release rate of different direction, for example, also along the original crack line or perpendicular to the original crack line., or kink from the 45 degree of original crack line.