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Affiliation of Author(s):航空学院

Title of Paper:Thermo-mechanical properties of 2.5D angle-interlock woven shape memory polymer composites

Journal:ICCM Int. Conf. Compos. Mater.

Abstract:A multi-scale strategy is employed in the paper to investigate the thermo-mechanical properties of 2.5D angle-interlock woven shape memory polymer composites (SMPCs). The themo-viscoelastic constitutive relationship of the yarn is described in the form of hereditary integral and the parameters of relaxation moduli are obtained from nonlinear fitting of Prony series based on the finite element results. The effects of warp and weft arranged densities on viscoelastic properties of 2.5D woven SMPCs are studied in detail. It is shown that with the increase of warp arranged density the viscoelasticity in the warp direction decreases. With the increase of weft arranged density, the viscoelasticity in the warp direction first increases until it reaches a maximum and then decreases. The shape memory behavior along the warp direction in small strain region is also analyzed on the basis of the viscoelastic properties of the composites. The shape fixation ratio and the stress recovery ratio of 2.5D woven SMPCs can both be predicted from the relaxation parameters. The research in the paper lays a foundation for design and application of woven SMPCs in engineering. © 2017 International Committee on Composite Materials. All rights reserved.

Translation or Not:no

Date of Publication:2017-01-01

Co-author:ty,Gu, Jianping

Correspondence Author:Sun Huiyu