Open AccessInterface damage analysis of composite hat-stiffened panels
Author(s) -
Tao Wang,
Ruixiang Bai,
Changlong Wei,
Xiaodi Huang,
Heshan Bai
Publication year - 2021
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1948/1/012139
Subject(s) - bending , structural engineering , materials science , buckling , deformation (meteorology) , stiffness , finite element method , composite number , three point flexural test , composite material , bending stiffness , compression (physics) , stress (linguistics) , interface (matter) , point (geometry) , engineering , geometry , mathematics , capillary number , capillary action , linguistics , philosophy
In order to reveal the mechanism of interfacial debonding damage of composite hat-stiffened panel, an eight-point bending model of single stiffened structure was designed. The finite element analysis was carried out by using the cohesive element to simulate debonding damage of interface between skin and rib. The deformation, interface stress and structural damage of the eight-point bending as well as the corresponding stiffened panel under axial compression were analyzed. The results showed that the initial debonding deformation was in good agreement with the interface stress distribution. For the eight-point bending model, although more damage appeared near the loading point due to stress concentration, it had little effect on the accurate prediction of interface damage behavior. The eight-point bending model can be used to evaluate the interface performance of corresponding multi-stiffened-panel during axial compression buckling by accurate simulation and parameter design, and it is helpful for the stiffness matching design of skin and stiffener.