A nonlinear analytical model for tensile failure prediction of pseudo-ductile composite laminates

Huabo Xiang, Yinxiao Zhang, Yang Chen, Alfonso Pagani, Chao Zhang

科研成果: 期刊稿件文章同行评审

5 引用 (Scopus)

摘要

In this study, the tensile nonlinear responses of composite laminates with ±θns and ±θn/0s layups are investigated. An analytical model that integrates the progressive failure, shear nonlinearity, fiber rotation, and fragmentation is established to characterize the nonlinear tensile behavior. A nonlinear factor is used to describe the shear nonlinearity of the resin matrix, which is governed by shear stress, while progressive damage indexes are determined by normal stresses. The degree of fiber rotation and the fragmentation between layers are analytically formulated. Tensile results from experiments conducted in this study and from others in the literature are used to verify the model's prediction accuracy. The proposed model provides acceptably good predictions of nonlinear behavior for pseudo-ductile carbon fiber reinforced composite laminates. A sensitivity analysis shows that the dominant model parameter changes from axial modulus to shear modulus, and eventually to transverse modulus as the off-axial angle increases from 0° to 90°.

源语言英语
文章编号109711
期刊Thin-Walled Structures
179
DOI
出版状态已出版 - 10月 2022

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