Abstract:

In order to solve the poor integrity of common boneycomb composites made by bonding planar materials with pressing, but the integrity of composites was bad. In order to solve this problem, honeycomb three-dimensional integrated woven fabric with triangle section shape were fabricated on common loom by reasonable design. The honeycomb three-dimensional integrated woven composites were prepared by VARTM molding process (vacuum assisted resin transfer molding process). Then, after the comparison of load-displacement curves, maximum load-velocity curves, maximum energy absorption and failure modes of experiments and Abaqus FEM simulation at different speeds, it showed that they had better consistency. It also proved that the Abaqus mode was right, we could use this mode to predict the mechanical properties of honeycomb 3D woven composites with triangle section shape and this provided theory for the honeycomb 3D woven composites in the high impact damage tolerance.

Key words: honeycimb, three-dimensional woven structure, bending property, vacuum assisted resin transfer molding process, finite element method