EXPERIMENTAL AND NUMERICAL INVESTIGATION OF THE BENDING CHARACTERISTICS OF CFRP SQUARE TUBE FILLED WITH ALUMINUM HONEYCOMB

Abstract

Abstract: Carbon fiber reinforced plastic (CFRP) has become the very important material for the lightweighting automotive in the future because of its lighter weight, higher strength and better performance compared with metallic materials. Combining the three-point bending experiment and finite element simulation method, the performance and failure mechanisms of CFRP tube filled aluminum honeycomb are carried out. The test results show that the peak load, absorbed energy and specific energy absorption (SEA) of the filled CFRP tube are increased by 17.09%, 32.31% and 0.9%, respectively, compared with the bare CFRP tube, and the failure mode is more stable. In addition, by the finite element simulation using Ls-dyna software, the failure mode and load-displacement curve agreed well with the physical experiments. It indicates that CFRP tube filled with lightweight aluminum honeycomb structure can effectively improve the lateral bending properties of bare CFRP structure, which is useful for the design of lightweight vehicle structure.

Key words: lightweight, aluminum honeycomb, CFRP, Ls-dyna, bending characteristics

CLC Number:

TB332

LIU Qiang, MO Zheng-wei. EXPERIMENTAL AND NUMERICAL INVESTIGATION OF THE BENDING CHARACTERISTICS OF CFRP SQUARE TUBE FILLED WITH ALUMINUM HONEYCOMB[J]. Fiber Reinforced Plastics/Composites, 2016, 0(7): 48-52.

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