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

作　　者：赵迅鹏 孙双双[1] 王洋 ZHAO Xun-peng;SUN Shuang-shuang;WANG Yang(College of Electromechanical Engineering,Qingdao University of Science&Technology,Qingdao 266061,China)

机构地区：[1]青岛科技大学机电工程学院,青岛266061

出　　处：《复合材料科学与工程》2022年第9期41-47,75,共8页Composites Science and Engineering

基　　金：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)。

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°)为递增单元,G/CFHC层合板的弯曲强度随着m的增加而增大。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°)as the incremental unit,the flexural strength of G/CFHC laminates increases with the increase of m.

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 

分 类 号：TB332[一般工业技术—材料科学与工程]