INTERFACIAL STRESSES AND FAILURE SIMULATION OF COMPOSITE HAT-STIFFENED PANEL

Abstract

Abstract: Based on CZM (Cohesive Zone Model), FEM model is built up to study the interfacial stresses and debonding failure of the composite hat-stiffened panel subjected to four-point bending. In the present model, the debonding failure of the adhesive layer between the skin and stiffener is considered by adding interface elements between the solid elements. The results indicate that: adhesive debonding is the main failure pattern of composite hat-stiffened panel, shear stress has a major effect on the debonding of bondline, and the failure of the adhesive layer can largely decrease the load-carrying capacity of the structure and lead to more serious damage.

Key words: composites, hat-stiffened panel, cohesive zone model, finite element, interfacial stresses

CLC Number:

TB332

HUANG Ling-kai, ZHU Li-bao, ZHANG Xiang-ming, TANG Yu-hang. INTERFACIAL STRESSES AND FAILURE SIMULATION OF COMPOSITE HAT-STIFFENED PANEL[J]. Fiber Reinforced Plastics/Composites, 2017, 0(5): 34-40.

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