A Macro-Meso Correlation Model for Numerical Simulation of CFRP Tensile Notched Strength

Abstract EN

In this paper, the tensile mechanical behavior of Carbon Fiber Reinforced Plates (CFRP) with central open-holes was studied by experimental and simulation ways.

A correlation model was built by macromechanical analysis and mesodamage analysis to form a progressive analysis architecture.

Composite laminates were disassembled into two kinds: Representative Volume Element (RVE), which were 3D intralayer orthotropic, and the 2D interlayer cohesive element.

The macromechanical analysis built connections between external loading cases and RVE stress distribution filed.

The mesodamage analysis aimed to determine multimode damage initiation and evolution inside RVE.

By comparing simulation results with experimental data, the prediction accuracy on failure mode, ultimate load, and fracture morphology were good enough to show the effectiveness and rationality of this new model.

In addition, this model’s applicability to different material and geometrical parameters was also verified by simulating the experiment results in the literature.