Study on Curved Surface Formability of 3D Woven Preform for Ballistic Helmet

被引：0
|
作者：
Zhang C. [1 ,2 ]
Chen L. [1 ,2 ]
Wang J. [1 ,2 ]
Jiao W. [1 ,2 ]
Li H. [3 ]
机构：
[1] School of Textile Science and Engineering, Tiangong University, Tianjin
[2] Ministry of Education Key Laboratory of Advanced Textile Composites Materials, Institute of Composite Materials, Tiangong University, Tianjin
[3] Equipment Research Branch, 3502 International China Clothing Co., Ltd., Hebei, Shijiazhuang
来源：
Binggong Xuebao/Acta Armamentarii | 2024年 / 45卷 / 06期
关键词：
3DWP; ballistic helmet; curved surface forming; layer-to-layer interlock; shear angle; wrinkle defect;
D O I：
10.12382/bgxb.2023.0334
中图分类号：
学科分类号：
摘要：
Three-dimensional woven preform (3DWP), because of its better formability and significant interlaminar bearing capacity, is expected to achieve the integrated molding of helmet curved surfaced, and reduce the waste of cut and raw materials. Because of the structure characteristics of ballistic helmet with multiple curved surfaces and high curvature, it is important to study the deformation mechanism of 3DWP during curved surface forming for the integrated forming of helmet. The curved surface formability of a layer-to-layer interlock 3DWP with stuffer yarns under high curvature and large deformation is studied systematically. The deformation mechanism and wrinkle defects formation mechanism of 3DWP are described comprehensively from in-plane/ inter-layer dimensions and macro/ mesoscale. The results indicate that significant in-plane shear deformation of 3DWP can be observed along the 45毅direction at the same latitude. The maximum in-plane shear angle of the concave surface is 38毅, which is greater than that of the convex surface. The maximum inter-layer shear angles of 3DWP warp and weft rows are 34. 83毅and 27. 76毅, respectively. After forming, 3DWP has reached 62毅 intra-ply shear locking angle, which induces the buckling of yarns microscopically and forms the ridged wrinkles macroscopically. In the wrinkle area, the maximum in-plane shear angle is only 4. 8毅, and the maximum inter-layer shear angle is 18毅. This conclusion has guiding significance for structure selection and forming process of reinforced fabric for ballistic helmet in practical application. © 2024 China Ordnance Industry Corporation. All rights reserved.
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页码：2017 / 2024
页数：7
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