Abstract
CFRP unidirectional laminates were cut by shearing with some clearances, and the damage extension and the morphology of cut specimens were observed. Damage extension was then predicted by smoothed particle hydrodynamics (SPH), and the unidirectional laminate was divided into fibers and resin in the model. By comparing the damage pattern between the experiment and the analysis, we discussed the mechanism of shear-cutting, i.e., extension of fiber breaks and resin failure. Compression failure of the resin was generated from the vicinity of the upper blade contacting point, and the fracture was then developed toward the lower blade. There was no significant difference in the damage extension due to clearance, but the area of resin compression failure increased with decreasing clearance.
