Employment of Pam-Fiss-Bi-Phase Computer Program for the Strength Analysis and Fracture/Delamination Behavior of Components

摘要

Numerical static tensile strength analysis and fracture behavior evaluation of a T300/914C carbon-epoxy (CE) composite material are summarized. Matrix (epoxy) macrocrack phenomena such as matrix splitting, matrix delamination and sublaminate matrix crack growth in process zones around notch roots were investigated using two and three-dimensional finite element models (with the PAM-FISS/BI-phase code), and compared to experimental results. For numerical analyses of unidirectional and multilayered notched/unnotched CE tensile specimens, a universal toughness criterion for matrix cracking under tensile static loading is proposed : GI = mode I strain energy release, calibrated at GIc = 0.15 N/mm for the T300 epoxy matrix used.