不同芯材高度三维夹芯复合材料抗低速冲击响应的数值模拟

doi:10.13475/j.fzxb.20180606907

纺织学报 ›› 2019, Vol. 40 ›› Issue (8): 48-54.doi: 10.13475/j.fzxb.20180606907

不同芯材高度三维夹芯复合材料抗低速冲击响应的数值模拟

罗超, 曹海建(), 黄晓梅

南通大学纺织服装学院, 江苏南通 226019

收稿日期:2018-06-25 修回日期:2019-04-11 出版日期:2019-08-15 发布日期:2019-08-16
通讯作者: 曹海建
作者简介:罗超(1994—),男,硕士生。主要研究方向为复合材料性能。
基金资助:
江苏省高校自然科学研究项目(16KJA430009);江苏省高校自然科学研究项目(16KJB540001);江苏省“六大人才高峰”高层次人才项目(XCL-061);南通大学引进人才科研启动费项目(15R08);南通大学研究生科研创新计划项目(FZ201711)

Numerical simulation on low velocity impact response of three-dimensional sandwich composites with different core height

LUO Chao, CAO Haijian(), HUANG Xiaomei

School of Textile and Clothing, Nantong University, Nantong, Jiangsu 226019, China

Received:2018-06-25 Revised:2019-04-11 Online:2019-08-15 Published:2019-08-16
Contact: CAO Haijian

摘要/Abstract

摘要：

为研究三维夹芯复合材料低速冲击力学响应及损伤机制,借助ANSYS有限元软件,建立不同芯材高度的三维夹芯复合材料细观结构模型进行低速冲击响应模拟,并将模拟值与实验值进行对比分析。结果表明:从宏观角度分析,三维夹芯复合材料抗低速冲击性能随着芯材高度的增加而增加,在上面板均已损坏的情况下,芯材高度为5 mm的材料芯材破坏情况更严重,模拟结果与实验结果具有较好的一致性;从细观角度分析,材料中的经纱、纬纱、接结经纱是承载的主体,树脂基体起次要作用;在5 J能量冲击作用下,材料的破坏模式主要是树脂形变、碎裂,纤维与树脂脱黏。

关键词: 三维夹芯复合材料, 低速冲击, 芯材高度, 有限元法

Abstract:

In order to study the mechanical response and damage mechanism of the three-dimensional sandwich composites at low velocity, a microstructural model of three-dimensional sandwich composites with different core material heights was established for simulation by means of the ANSYS finite element software, and the simulated values were compared with the experimental values. The results show that the low velocity impact resistance of the sandwich composite material increases with the increase of the core material height from the macroscopic angle, and the damage of the material with the height of 5 mm is more serious when the upper plate is damaged, and the simulation results have a good consistency with the experimental results. From the microscopic perspective, the warp, weft and junction warp are the main bearing bodies, and the resin matrix plays a secondary role. Under the impact of 5 J energy, the main failure modes of the material are resin deformation, fragmentation and fiber debonding.

Key words: three-dimensional sandwich composite, low velocity impact, core height, finite element method

中图分类号:

TU599

罗超, 曹海建, 黄晓梅. 不同芯材高度三维夹芯复合材料抗低速冲击响应的数值模拟[J]. 纺织学报, 2019, 40(8): 48-54.

LUO Chao, CAO Haijian, HUANG Xiaomei. Numerical simulation on low velocity impact response of three-dimensional sandwich composites with different core height[J]. Journal of Textile Research, 2019, 40(8): 48-54.

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材料	弹性模量/ GPa	密度/ (g·cm^-3)	拉伸强度/ GPa	泊松比
玻璃纤维	70	2.50	3.00	0.25
环氧树脂	1	1.20	0.07	0.38
结构钢	200	7.85	0.46	0.30

不同芯材高度三维夹芯复合材料抗低速冲击响应的数值模拟

Numerical simulation on low velocity impact response of three-dimensional sandwich composites with different core height

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