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A strength-based criterion is monitored in each ply using a local model of the skin stiffener interface cross-section.
Furthermore, the mismatch-strain criterion is found to bear the same physical meaning as the strength-based criterion.
For the numerical analysis, two-dimensional models of the interface cross-section were used with a strength-based criterion that monitored failure within each ply.
In the numerical analysis of the undamaged panels, collapse was predicted using a ply failure degradation model, and a global local approach that monitored a strength-based criterion in the skin stiffener interface.
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Results show that the strength-based criteria can effectively predict the initiation of interface debonding.
Fibers, matrix and delamination failures are predicted using two different strength-based criteria for each single mode.
Two strength-based criteria incorporating dynamic fracture mechanics analysis are proposed to predict the initiation location of interface debonding ahead of a dynamic incident crack.
Local damage extent and position across the thickness are predicted using several classical semi-empirical strength-based criteria, while degradation is simulated by reducing the stiffness of damaged plies.
CZEs use a strength-based failure criterion to predict the onset of damage and a fracture mechanics based approach to predict its growth.
A new strength-based fracture criterion for thermal shock of functionally gradient materials (FGM) ceramic plate is put foreword and consequently a new expression of critical temperature difference ΔTc, leading to the local fracture strength at the surface as the thermal shock resistance parameter for infinite FGM ceramic plate with symmetrical structure is obtained.
However, the locations of fracture initiation obtained from the numerical models matched those observed during experimental studies of both carbon steel and stainless steel connections and this feature has been used as the basis for defining a consistent, strength based criterion of failure.
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