Abstract:

Experimental and FEA methods are used to study the damage propagation and failure properties of stiffened composite panels with discretesource damage. Influence of discretesource damage on residual strength of composite panel is also investigated. The research indicates that the notched composite panel is suitable to simulate the discretesource damage of stiffened composite panel with discretesource damage. And there is high strain concentration at the notch end. The break-through of the stringer make the load path changed.

Key words: composite,  , discrete-source , damage,  , compression , failure,  , finite , element , analysis,  , stiffened , panels