User login

You are here

Critical Fracture energy release rate for cohesive zone model

AttachmentSize
Image icon Fracture-mode-2.png76.78 KB

Hi, I am trying to estimate the critical fracture energy release rate for a cohesive zone model of metal laminates bonded together.On using the lap - shear test( mode 2 debonding of the laminates) I am able to find the total energy released on delamination.For a zone of length L and width w my experiment provides the total energy released as area under load - displacement plot = U.I am also able to obtain the fracture energy release rate per unit width as u =  U/(w*L). My question is can this be used as input critical energy release rate for traction separation behavior in abaqus i.e Gc (area under the traction separation curve for a single element). As there could be many cohesive elements in unit length along the fracture front, I assume that the cumulative fracture energy released by all the elements in unit length  = u. Hence Gc/element_length = u, however I find that many use Gc as u.I would be very grateful for any suggestions as to which approach is correct. thanks,Shouvik

Subscribe to Comments for "Critical Fracture energy release rate for cohesive zone model"

Recent comments

More comments

Syndicate

Subscribe to Syndicate