Experimental evaluation of the crush energy absorption of triggered composite sandwich panels under quasi-static edgewise compressive loading |
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| Authors: | M.W. Joosten S. Dutton D. Kelly R. Thomson |
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| Affiliation: | 1. School of Mechanical Engineering, Xi''an Jiaotong University, Xi''an 710049, PR China;2. MOE Key Laboratory for Multifunctional Materials and Structures, Xi''an Jiaotong University, Xi''an 710049, PR China;3. State Key Laboratory for Mechanical Structure Strength and Vibration, Xi''an Jiaotong University, Xi''an 710049, PR China;1. State Key Laboratory of Advanced Design and Manufacture for Vehicle Body, Hunan University, Changsha 410082, China;2. School of Aerospace, Mechanical and Mechatronic Engineering, The University of Sydney, Sydney, NSW 2006, Australia |
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| Abstract: | An experimental evaluation of the energy absorption of constrained triggered sandwich structures is presented. Four configurations of embedded ply-drop triggering mechanisms were analysed and compared. A composite pi-joint was then developed to provide a constraint fixture that is representative of an in-service integrated energy absorbing structure. The specimens tested within the pi-joints obtained slightly lower specific energy absorption compared to the equivalent specimens tested in a rigid test fixture. The potential of an integrated energy absorbing triggered sandwich structure contained within a composite pi-joint was demonstrated. The interface between the sandwich panel and the pi-joint was not bonded, and further research will focus on the development of a bonded joint configuration suitable for structural applications. |
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