Numerical simulation of composite grid sandwich structure under low-velocity impact

IF 1.9 4区材料科学 Q3 Materials Science

Science and Engineering of Composite Materials Pub Date : 2022-01-01 DOI:10.1515/secm-2022-0176

W. Gao, Zhiqiang Yu, Aijie Ma, Zhangxin Guo

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Abstract

Abstract The low-velocity impact finite element model of the carbon fiber-reinforced composite grid sandwich structure was established by ABAQUS. Its panels and grid are both carbon fiber-reinforced composite laminates. The constitutive relation of composite laminates is written into the VUMAT user subroutine using the Fortran language. Simulation of intralaminar failure behavior of composite laminates using the three-dimensional Hashin failure criterion. The quadratic stress criterion and the B-K energy criterion were used to simulate the interlaminar failure behavior, and the delamination damage of the composite panel and the interface debonding damage were simulated. The finite element models of four different types of composite grid sandwich structures, including quadrilateral configuration, triangular configuration, mixed configuration, and diamond configuration, were established. The influence of the single grid width and the height of the grid on the impact resistance of each composite grid configuration was studied. Compared with other geometric configurations, triangular grid sandwich structure provides the best energy absorption characteristics, and T-6-10 has the highest fracture absorption energy (15816.46 mJ). The damage propagation law of carbon fiber-reinforced composite grid sandwich structure under impact load is analyzed.

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低速冲击下复合材料网格夹层结构的数值模拟

摘要采用ABAQUS软件建立碳纤维增强复合材料网格夹层结构的低速冲击有限元模型。它的面板和网格都是碳纤维增强复合材料层压板。用Fortran语言将复合材料层合板的本构关系写入VUMAT用户子程序中。基于三维哈欣破坏准则的复合材料层板层内破坏行为模拟。采用二次应力准则和B-K能量准则模拟复合材料层间破坏行为，模拟复合材料板的分层损伤和界面脱粘损伤。建立了四边形、三角形、混合和菱形四种复合网格夹层结构的有限元模型。研究了单网格宽度和网格高度对各种复合网格结构抗冲击性能的影响。与其他几何构型相比，三角网格夹层结构的吸能性能最好，其中T-6-10的断裂吸收能最高，达到15816.46 mJ。分析了碳纤维增强复合材料网格夹层结构在冲击载荷作用下的损伤扩展规律。

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来源期刊

Science and Engineering of Composite Materials 工程技术-材料科学：复合

CiteScore

3.10

自引率

5.30%

发文量

审稿时长

4 months

期刊介绍： Science and Engineering of Composite Materials is a quarterly publication which provides a forum for discussion of all aspects related to the structure and performance under simulated and actual service conditions of composites. The publication covers a variety of subjects, such as macro and micro and nano structure of materials, their mechanics and nanomechanics, the interphase, physical and chemical aging, fatigue, environmental interactions, and process modeling. The interdisciplinary character of the subject as well as the possible development and use of composites for novel and specific applications receives special attention.