Multiscale Damage Analysis of Needle Punched Carbon/Carbon Composite
A multi-scale model of needle punched carbon/carbon composites with pinhole region is established.The mixing rate formula and periodic boundary conditions are combined to calculate the elastic mechanical parameters of each component material and the average elastic parameters of the needle punched cell model.Based on the collaborative multi-scale method,multi-scale information transfer is realized by using the stress-strain amplification factor in key areas,and multi-scale damage analysis of needle punched C/C composites is realized by combining the corresponding failure criteria.
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