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F.4.4 Buckling Modulus – Equivalent Flat Panel Calculation

F.4.4.1 When specified, the EI of the chassis must be calculated as the EI of a flat panel with the same composition as the chassis about the neutral axis of the laminate.

F.4.4.2 The curvature of the panel and geometric cross section of the chassis must be ignored for these calculations.

F.4.4.3 Calculations of EI that do not reference this section F.4.4 may take into account the actual geometry of the chassis.