湿热环境下玻/碳纤维混杂复合材料弯曲强度的宏观力学分析

doi:10.19936/j.cnki.2096-8000.20220928.006

复合材料科学与工程 ›› 2022, Vol. 0 ›› Issue (9): 41-47.DOI: 10.19936/j.cnki.2096-8000.20220928.006

湿热环境下玻/碳纤维混杂复合材料弯曲强度的宏观力学分析

赵迅鹏, 孙双双^*, 王洋

青岛科技大学机电工程学院,青岛 266061

收稿日期:2021-10-13 出版日期:2022-09-28 发布日期:2022-09-27
通讯作者: 孙双双(1971-),女,博士,教授,主要从事复合材料力学、智能材料与结构、结构振动与控制方面的研究,sunkira2011@163.com。
作者简介:赵迅鹏(1994-),男,硕士研究生,主要从事复合材料结构与力学性能方面的研究。
基金资助:
山东省自然科学基金(ZR2014AL011);山东省高等学校科技计划(J13LB08);青岛市科技发展计划(13-1-4-150-jch)

Macro-mechanical analysis of flexural strength of glass/carbon fiber hybrid composites in the hydrothermal environment

ZHAO Xun-peng, SUN Shuang-shuang^*, WANG Yang

College of Electromechanical Engineering, Qingdao University of Science & Technology, Qingdao 266061, China

Received:2021-10-13 Online:2022-09-28 Published:2022-09-27

摘要/Abstract

摘要： 本文将复合材料单层板的刚度和强度性能表达成湿热参数的函数。基于经典层合板理论和宏观力学方法,用MATLAB编写了湿热环境下玻/碳纤维混杂复合材料(G/CFHC)弯曲强度的计算程序。研究了湿热环境对玻/碳纤维层间混杂复合材料和玻/碳纤维夹芯混杂复合材料弯曲强度的影响。分析了湿热环境下不同混杂方式的G/CFHC层合板弯曲强度变化规律。结果表明:在湿热环境20 ℃~100 ℃温度区间内,G/CFHC层合板吸湿后,随着温度的升高其弯曲强度逐渐降低;在湿热环境下,±45°层相邻的G/CFHC层合板受层间切应力影响,其弯曲强度要低;在湿热环境20 ℃~110 ℃温度区间内,以(0°/90°)_m为递增单元,G/CFHC层合板的弯曲强度随着m的增加而增大。

关键词: 宏观力学分析, 经典层合板理论, 湿热环境, 玻/碳纤维混杂复合材料, 弯曲强度

Abstract: In this paper, the stiffness and strength properties of the composite lamina are expressed as a function of hydrothermal parameters. Based on the classic laminate theory and macro-mechanics methods, a calculation program for the flexural strength of glass/carbon fiber hybrid composites (G/CFHC) under hydrothermal environments is compiled with MATLAB. The influence of the hydrothermal environment on the flexural strength of glass/carbon fiber interlayer hybrid composites and glass/carbon fiber sandwich hybrid composites is studied. The change law of bending strength of G/CFHC laminates with different hybrid methods under hydrothermal environment is analyzed. The results show that after G/CFHC laminates absorb moisture in the temperature range of 20 ℃~100 ℃ in a hydrothermal environment, their flexural strength gradually decreases with the increase of temperature. The G/CFHC laminates with adjacent layers of ±45° are affected by the interlaminar shear stress in a hydrothermal environment, and their bending strength is slightly lower. In the temperature range of 20 ℃~110 ℃ in the hydrothermal environment, with (0°/90°)_m as the incremental unit, the flexural strength of G/CFHC laminates increases with the increase of m.

Key words: macro-mechanical analysis, classical laminate theory, hydrothermal environment, glass/carbon fiber hybrid composites, flexural strength

中图分类号:

TB332

赵迅鹏, 孙双双, 王洋. 湿热环境下玻/碳纤维混杂复合材料弯曲强度的宏观力学分析[J]. 复合材料科学与工程, 2022, 0(9): 41-47.

ZHAO Xun-peng, SUN Shuang-shuang, WANG Yang. Macro-mechanical analysis of flexural strength of glass/carbon fiber hybrid composites in the hydrothermal environment[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(9): 41-47.

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湿热环境下玻/碳纤维混杂复合材料弯曲强度的宏观力学分析

Macro-mechanical analysis of flexural strength of glass/carbon fiber hybrid composites in the hydrothermal environment

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