EXPERIMENTAL STUDY ON ENERGY ABSORPTION OF THE FOAM SANDWICH COMPOSITE ENHANCED LATTICE WEB UNDER QUASI-STATIC COMPRESSION

Abstract

Abstract: Composite sandwich structure has the characteristics of light weight, high strength, bending stiffness, corrosion resistance, good designability, impact resistance, energy absorbing, etc. Lattice web reinforced foam sandwich composite specimens are produced by vacuum infusion, with glass fiber reinforced polymer (GFRP) for the panels and lattice webs, polyurethane foam for core. Holding the specimen plane size constant and changing the distance, height and thickness of the webs and the density of foam, specimens are tested under quasi-static axial compression to study their performance of energy absorption. It is shown that with the increase of the volume ratio of web, the yield bearing capacity and energy absorption performance of the composite sandwich structure increase. In addition, the lattice web plays a role in strengthening the core and absorbing energy.

Key words: composites, lattice webs, quasi-static compression, energy absorption

CLC Number:

TB332

FAN Zi-yan, FANG Hai, ZHUANG Yong, LIU Wei-qing. EXPERIMENTAL STUDY ON ENERGY ABSORPTION OF THE FOAM SANDWICH COMPOSITE ENHANCED LATTICE WEB UNDER QUASI-STATIC COMPRESSION[J]. Fiber Reinforced Plastics/Composites, 2017, 0(1): 5-10.

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