A numerical study is used to design test geometries and loading histories that can probe the mode II bridging effect of through-thickness reinforcement in composite laminates loaded at high strain rates. Rate-dependence in the assumed cohesive law of a cohesive fracture model causes large enough changes to calibrate the law, if tests are properly selected to vary the crack sliding displacement rate.
Designing dynamic tests to assess rate dependence in large-scale crack bridging
MASSABO', ROBERTA;
2009-01-01
Abstract
A numerical study is used to design test geometries and loading histories that can probe the mode II bridging effect of through-thickness reinforcement in composite laminates loaded at high strain rates. Rate-dependence in the assumed cohesive law of a cohesive fracture model causes large enough changes to calibrate the law, if tests are properly selected to vary the crack sliding displacement rate.
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