Curing deformation study of composite cobonding omega stringer stiffened panel

doi:10.19936/j.cnki.2096-8000.20240928.010

Abstract

Abstract: The curing deformation of omega stringer stiffened panel was researched with five stringer stiffened panel. The contour of omega stringer was measured by tri-ordinate measuring machine, and finite element simulation was made for curing deformation of omega stringer, there is a spring-in deformation in the cross-section direction, and a torsional deformation in the length direction. The height and width of omega stringer after omega stringer cured and stiffened panel cured were measured, and explain that there is a collapse deformation for omega stringer, reducing 0.5 mm at height and increasing 2 mm at width approximately, the trend of change is the same between experiment and simulation. The contour of stiffened panel was measured by laser tracker, there is an obvious bending deformation perpendicular to the stringer length direction, 12.9 mm at maximum. Finite element simulation was made for curing deformation of the stiffened panel, the simulation result is in agreement with experimental result. After analysis, the curing deformation of omega stringer stiffened panel is resulted from both the torsional deformation and the collapse deformation of omega stringer.

Key words: composite, omega stringer, stiffened panel, curing deformation

CLC Number:

TB332

YAN Chao, RONG Xiaoyuan, ZHAO Yueqing, QIAN Zhongjian. Curing deformation study of composite cobonding omega stringer stiffened panel[J]. COMPOSITES SCIENCE AND ENGINEERING, 2024, 0(9): 67-72.

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