Numerical simulation on mechanical properties and damage behavior of CFRP with self-healing microvascular channels

Abstract

In this study, 3D representative volume element models with microchannels were established based on measured data. And the periodic boundary conditions were moderately modified to adapt to the actual constraints of the studied object. The effects of different microvascular parameters on the tensile and compressive properties of composites were studied. And the damage pattern of carbon fiber as the main load-bearing phase under the force was analyzed. The models were verified by tensile testing and micromorphology experiments. The research results are of application to the design and analysis of CFRP laminates containing similar microchannel structures.

Keywords:

• CFRP
• microvascular channel
• simulation
• mechanical properties
• damage behavior

Additional information

Funding

This research is supported by the National Natural Science Foundation of China (grant nos. 51905443 and 51875476), Fundamental Research Funds for the Central Universities (grant no. 31020200503003), Aviation Foundation (grant no. ASFC-201916053001).