FEM SIMULATION OF FAILURE PROCESS UNDER BENDING TEST FOR CARBON FIBER REINFORCED COMPOSITES BRIDGE

Abstract

Abstract: It is important to know the bending failure mechanisms for designing the composite structures in engineering field. The bending damage mechanisms and failure process of carbon fiber reinforced composites bridge are reported. The bending properties were tested on fiber reinforce composites bridge by MTS-810 universal testing machine. The load-deflection curve and failure modes were obtained. Based on the real structure of composites bridge, a continuum shell element model was established. Composites bridge was incorporated with a finite element code Abaqus/Explicit to simulate the bending failure process. Load-deflection curve obtained from the finite element method and the test result has good consistency. Failure was occurred in the position of the supporting rollers. Fiber breakage, matrix cracking, delamination and plate buckling were the main failure modes of the composites bridge. The result showed that the application of FEM in predicting the mechnical properties and optimization design of composites bridge is effective.

Key words: fiber reinforced composites, bridge, continuum shell element, finite element method (FEM), flexural properties

CLC Number:

TB332

ZHANG Wei, WANG Jin-hua, JING Xiao-ying. FEM SIMULATION OF FAILURE PROCESS UNDER BENDING TEST FOR CARBON FIBER REINFORCED COMPOSITES BRIDGE[J]. COMPOSITES SCIENCE AND ENGINEERING, 2014, 0(1): 53-58.

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