13 Study on Bearing Mechanism of Composite Stiffened Panel …
157
Fig. 13.1 Dimensions of shear test pieces for type I stiffened plates (mm)
13.2.2 Material System
The laminate material system is CCF300/BA9916-II, which is manufactured by
conventional prepreg method. The nominal thickness of the single layer is 0.155 mm,
the nominal fiber volume content is about 62%, and the porosity is within 2.0%. The
material properties are shown in Table 13.2 below.
13.2.3 Size and Location of Precast Layers
This study mainly simulates the delamination prefabricated by polytetrafluoroethylene film between the truss and the skin. The position of the simulated delamination
in the finite element method is shown in Fig. 13.3. The delamination dimensions are
40 × 40 mm, 80 × 40 mm and 120 × 40 mm.
157
Fig. 13.1 Dimensions of shear test pieces for type I stiffened plates (mm)
13.2.2 Material System
The laminate material system is CCF300/BA9916-II, which is manufactured by
conventional prepreg method. The nominal thickness of the single layer is 0.155 mm,
the nominal fiber volume content is about 62%, and the porosity is within 2.0%. The
material properties are shown in Table 13.2 below.
13.2.3 Size and Location of Precast Layers
This study mainly simulates the delamination prefabricated by polytetrafluoroethylene film between the truss and the skin. The position of the simulated delamination
in the finite element method is shown in Fig. 13.3. The delamination dimensions are
40 × 40 mm, 80 × 40 mm and 120 × 40 mm.