A finite element model for predicting delamination resistance of z-pin
reinforced laminates under the mode-II load condition is presented. End notched
flexure specimen is simulated using a cohesive zone model. The main difference
of this approach to previously published cohesive zone models is that the
individual bridging force exerted by z-pin is governed by a specific traction-
separation law derived from a unit-cell model of single pin failure process,
which is independent of the fracture toughness of the unreinforced laminate.
Therefore, two separate traction-separation laws are employed; one represents
unreinforced laminate properties and the other for the enhanced delamination
toughness owing to the pin bridging action. This approach can account for the
so-called large scale bridging effect and avoid using concentrated pin forces in
numerical models, thus removing the mesh-size dependency and permitting more
accurate and reliable computational solutions
Is data on this page outdated, violates copyrights or anything else? Report the problem now and we will take corresponding actions after reviewing your request.