DYNAMIC PROPERTIES OF CO-CURING DAMPING FILM SANDWICH SUTURE COMPOSITES

Abstract

Abstract: In order to improve the interlaminar bonding performance of the damping composite material, the Cocuring Damping Film Sandwich Suture Composite Structure (CDFSSCS) was presented. ANSYS software is used to create a finite element model of CDFSSCS plate, and the CDFSSCS dynamics performance of the square plate is investigated with the modal strain energy method revised. The damping films in the CDFSSCS specimens are prepared by brush method, and the simulation method was verified by modal test. The first-order modal frequency and the first-order loss factor of CDFSSCS square plate with different parameters (stitch distance, row distance and damping layer distribution) are obtained by verifying the ANSYS model. The results show that the first order modal frequency and loss factor of the structure can be changed by adjusting the seam parameters and position distribution of the damping sandwich layer. It is of guiding significance to the theoretical design and practical application of CDFSSCS.

Key words: cocuring damping film sandwich suture composite structure, finite element numerical simulation, loss factor, modal frequency

CLC Number:

TB332

YANG Gong-xian, LIANG Sen, YAN Sheng-yu. DYNAMIC PROPERTIES OF CO-CURING DAMPING FILM SANDWICH SUTURE COMPOSITES[J]. Composites Science and Engineering, 2020, 0(8): 49-57.

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