| 1 | 0 | 7 |
| 下载次数 | 被引频次 | 阅读次数 |
温度和湿度是影响Z-pin增强复合材料力学性能主要因素，本文对湿热条件下该材料的弹性性能开展研究。在综合考虑其细观结构特征与湿热耦合作用的基础上，建立了湿热环境下Z-pin增强复合材料弹性性能预测模型。通过对模型进行计算，并将计算结果与已有文献试验数据对比，发现二者吻合良好。运用此模型对湿热环境下Z-pin增强复合材料力学性能进行分析，结果表明：Z-pin增强复合材料的弹性模量随温度、湿度升高呈显著衰减趋势，且温度、湿度耦合作用会进一步加剧弹性模量劣化；横向弹性模量与面内剪切模量对温度的敏感性远高于纵向弹性模量，当温度接近玻璃化转变温度时，相对室温干燥状态，二者分别降低62.8%和52.3%；受pin桥联约束效应调控，横向弹性模量和面内剪切模量均随pin体积分数的增加呈上升趋势。
Abstract：Temperature and humidity are the main factors affecting the mechanical properties of Z-pin reinforced composites. This paper investigates the elastic properties of the material under hygrothermal conditions. Based on a comprehensive consideration of its mesoscopic characteristics and the coupled hygrothermal effects, a predictive model for the elastic properties of Z-pin reinforced composites in hygrothermal environments is established. By calculating the model and comparing the results with experimental data from existing literature, good agreement was achieved between the two. Using this model to analyze the mechanical properties of Z-pin reinforced composites in hygrothermal environments, the results show that the elastic modulus of Z-pin reinforced composites exhibits a significant decreasing trend with increasing temperature and humidity, and the coupled effect of temperature and humidity further exacerbates the degradation of the elastic modulus. The transverse elastic modulus and in-plane shear modulus are significantly more sensitive to temperature than the longitudinal elastic modulus. When the temperature approaches the glass transition temperature, compared to the dry state at room temperature, the transverse elastic modulus and in-plane shear modulus decrease by 62.8% and 52.3%, respectively. Regulated by the pin bridging constraint effect, both the transverse elastic modulus and in-plane shear modulus increase with the increase of pin volume fraction.
[1]DUTTA H, VEEMAN D. Enhancing transverse strength of3D-printed PETG-CF composites using Kevlar/epoxy Zpins[J]. Materials Letters, 2026, 407:140030.
[2]张楠，许琦玥.高性能纤维增强复合材料在建筑结构加固中的应用研究[J].城市建设理论研究（电子版），2024(22):171-173.
[3]DU Y, MA Y E, SUN W B, et al. Effect of hygrothermal aging on moisture diffusion and tensile behavior of CFRP composite laminates[J]. Chinese Journal of Aeronautics,2023, 36(3):382-392.
[4]QIN G F, QIN W Z, MI P W, et al. Review on accelerated aging and natural aging studies of composites under wetheat-load conditions[J]. Journal of Traffic and Transportation Engineering, 2024, 24(5):173-194.
[5]谢顺利，王海涛，张元鸣.湿热条件下Z-pin增强复合材料层合板性能研究[J].信阳师范学院学报（自然科学版），2022,35(2):304-309.
[6]胡泽辉，李勇，还大军，等. Z-pin增强防隔热复合材料研究现状及发展趋势[J].复合材料科学与工程，2024(9):125-132.
[7]YANG S Y, GAI D, XU H, et al. Influence of humid and thermal environment on flexural properties of CFRP reinforced foam sandwich structures[J]. Journal of Physics:Conference Series, 2024, 2783(1):012020.
[8]王伟伟.基于工艺过程的Z-pin增强复合材料多尺度建模及面内损伤机理研究[D].杭州：浙江大学，2022.
[9]MOURITZ A P. Review of z-pinned laminates and sandwich composites[J]. Composites Part A:Applied Science and Manufacturing, 2020,139:106128.
[10]WHITESIDE J B, DELASI R J, SHUTLE R L. Measurement of preferential moisture ingress in composite wing/spar joints[J]. Composite Science and Technology, 1985,24(2):123-145.
[11]KNOPP A, DÜSTERHÖFT C, REICHEL M, et al. Flexural properties of z-pinned composite laminates in seawater environment[J]. Journal of Materials Science, 2014,49(24):8343-8354.
[12]BEHERA A, VISHWAKARMA A, THAWRE M M, et al.Effect of hygrothermal aging on static behavior of quasiisotropic CFRP composite laminate[J]. Composites Communications, 2020, 17:51-55.
[13]LI C H, YAN Y, WANG P, et al. Study on compressive properties of Z-pinned laminates in RTD and hygrothermal environment[J]. Chinese Journal of Aeronautics, 2012, 25(1):64-70.
[14]魏玉卿.缝纫复合材料细观结构表征及面内力学性能的理论和模拟[D].上海：上海大学，2008.
[15]CHANG P. The mechanical properties and lailure mechanisms of Z-Pinned composites[D]. Melbourne:Dissertation of RMIT University, 2006.
[16]LAL A, SINGH B N, ANAND S. Nonlinear bending response of laminated composite spherical shell panel with system randomness subjected to hygro-thermo-mechanical loading[J]. International Journal of Mechanical Sciences,2011, 53(10):855-866.
[17]LI C H, GUO W, WU Z. Tensile strength of Z-pinned laminates in RTD and hot-wet environment[J]. Science and Engineering of Composite Materials, 2017, 24(1):101-109.
[18]GRASSI M, ZHANG X, MEO M. Prediction of stiffness and stresses in z-fibre reinforced composite laminates[J].Composites Part A:Applied Science and Manufacturing,2002, 33(12):1653-1664.
[19]KAFODYA I, XIAN G J, LI H. Durability study of pultruded CFRP plates immersed in water and seawater under sustained bending:Water uptake and effects on the mechanical properties[J]. Composites Part B:Engineering,2015,70:138-148.
基本信息:
中图分类号:TB33
引用信息:
[1]谢顺利,刘祎恒.湿热环境下基于细观特征的Z-pin复合材料弹性性能研究[J].中原工学院学报,2026,37(02):87-94.
基金信息:
国家自然科学基金项目(52508178); 河南省国际合作重点项目(231111520600)
2026-04-25
2026-04-25