Quasi-Static Transverse Crushing of Cylindrical Tubes in Laminated Composites

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The research deals with the buckling or crushing of tubes under the action of a line of concentrated forces in the transverse direction. The research entails both an analytical and experimental component. The end product would be a user friendly computer code for predicting the crushing strength of the composite tubes based on the properties of the composite material used to wind the tubes. The code would be verified and modified, if necessary, based on the results of an extensive series of experiments. Composite structures are well known for their high strength-to-weight ratio and high rigidity-to-weight ratio. In spite of the extensive research in developing composite structures for airframes and space applications during the past 20 years, the basic issues such as delamination, effect of joints, impact damage, and buckling failure of tube and shell structures are yet to be resolved. The results of this research would upgrade the state-of-the-art understanding of the crushing strength and failure of laminated composite tubes used in pipes and conduits.