针刺参数对玄武岩纤维预制体力学和热导率影响的有限元分析

硅酸盐通报 ›› 2021, Vol. 40 ›› Issue (8): 2763-2769.

针刺参数对玄武岩纤维预制体力学和热导率影响的有限元分析

郑云¹, 乔志炜¹, 刘延友¹, 牛波², 段文九², 周国相², 杨治华²

1.南京玻璃纤维研究设计院有限公司先进材料公司,南京 211112;
2.哈尔滨工业大学特种陶瓷研究所,哈尔滨 150001

收稿日期:2020-12-28 修回日期:2021-03-20 出版日期:2021-08-15 发布日期:2021-09-02
通讯作者: 刘延友,工程师。E-mail:sinomalyy@163.com
作者简介:郑云(1966—),男,高工。主要从事高性能纤维预制体成型制备的研究。E-mail:940295087@qq.com

Finite Element Analysis on Effect of Needle Punching Parameter on Mechanical Properties and Thermal Conductivity of Basalt Fiber Preform

ZHENG Yun¹, QIAO Zhiwei¹, LIU Yanyou¹, NIU Bo², DUAN Wenjiu²,ZHOU Guoxiang², YANG Zhihua²

1. Advanced Materials Co. of Nanjing Fiberglass Research and Design Institute Co., Ltd., Nanjing 211112, China;
2. Institute for Advanced Ceramics, Harbin Institute of Technology, Harbin 150001, China

Received:2020-12-28 Revised:2021-03-20 Online:2021-08-15 Published:2021-09-02

摘要/Abstract

摘要： 针刺密度、针刺深度等针刺工艺会对纤维针刺预制体的性能造成显著影响。本文通过有限元分析方法,利用Python语言对ABAQUS软件进行二次开发,建立了玄武岩纤维针刺预制体的代表性体积单元(RVE)。研究了针刺深度和针刺密度对玄武岩纤维针刺预制体层间力学和热导率的影响,并结合实验结果分析了其影响机制。结果表明,不同纤维网胎层间主要依靠针刺纤维进行结合,增加针刺密度和针刺深度均可提高针刺预制体的剪切性能,但提高针刺密度的效果比提高针刺深度的效果更加明显。当沿针刺预制体z轴方向施加温度梯度时,热流矢量主要集中于针刺纤维中,且当增加针刺深度时上述现象更加明显。因此,增加针刺深度不利于针刺预制体的防热性能。

关键词: 纤维针刺, 玄武岩纤维, 力学性能, 热导率, 有限元分析, ABAQUS

Abstract: Needle punching parameter, such as needle density and needle depth, have a significant impact on the performance of the basalt fiber preform. Based on the finite element analysis method and the secondary development of ABAQUS software using Python language, the representative volume element (RVE) of the basalt fiber preform of different needle depth and needle density was established. The influence of these parameter on the mechanical properties and thermal conductivity of the basalt fiber preform were studied combined with the experimental results. The results show that the fiber mesh layer is mainly combined by needle punching fibers, and the shear performance of the prefabricated body can be improved by increasing the needle density and the needle depth, but the effect of increasing the needle density is more obvious than that of increasing the needle depth. When the temperature gradient is applied along the z-axis direction of the prefabricated body, the heat flow vector is mainly concentrated in the needle fibers, and the above phenomenon becomes more obvious when the needle depth is increased. Therefore, increasing the needle depth is not conducive to the thermal protection of the prefabricated body.

Key words: fiber needling, basalt fiber, mechanical property, thermal conductivity, finite element analysis, ABAQUS

中图分类号:

TS174.6

郑云, 乔志炜, 刘延友, 牛波, 段文九, 周国相, 杨治华. 针刺参数对玄武岩纤维预制体力学和热导率影响的有限元分析[J]. 硅酸盐通报, 2021, 40(8): 2763-2769.

ZHENG Yun, QIAO Zhiwei, LIU Yanyou, NIU Bo, DUAN Wenjiu, ZHOU Guoxiang, YANG Zhihua. Finite Element Analysis on Effect of Needle Punching Parameter on Mechanical Properties and Thermal Conductivity of Basalt Fiber Preform[J]. BULLETIN OF THE CHINESE CERAMIC SOCIETY, 2021, 40(8): 2763-2769.

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