STUDY ON DAMAGE BEHAVIOR OF THREE KINDS OF COMPOSITE SANDWICHSTRUCTURE PANEL UNDER BENDING LOAD

Abstract

Abstract: In this paper, three types of composite sandwich panels, hat, bubble, and Ⅰ were fabricated, and the bending performance of composite sandwich panels were studied. Finite element analysis (FEM) method was used to investigate the stress distribution on composite sandwich panels suffering from bending load, and Tsai-Hill failure criteria was used to predict the failure mechanism of the composite structures. Results show that the bending stiffness and maximum load of hat sandwich panel is the highest among the three sandwich structures. The damage zone of three kinds of sandwich are different. The damage zone of hat sandwich structure occurred at the edge of indenter and core corner below the loading zone. The damage zone of bubble sandwich occurred in the support region of core. The damage zone of Ⅰsandwich is located at the support region of bottom plate.

Key words: composite sandwich panels, three-point bending test, finite element analysis, bending stiffness, damage zone

CLC Number:

TB332

FANG Lu-ping, LU Chun, CHEN Ping, QI Ming-xue. STUDY ON DAMAGE BEHAVIOR OF THREE KINDS OF COMPOSITE SANDWICHSTRUCTURE PANEL UNDER BENDING LOAD[J]. Fiber Reinforced Plastics/Composites, 2016, 0(4): 36-40.

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