| 杨木纤维/聚乙烯复合材料拉伸性能微观力学模型 |
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| 引用本文： | 孙宏雨,吕兴聪,郭垂根,王清文,袁纳新,孙理超.杨木纤维/聚乙烯复合材料拉伸性能微观力学模型[J].复合材料学报,2021,38(1):155-164. |
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| 作者姓名： | 孙宏雨 吕兴聪 郭垂根 王清文 袁纳新 孙理超 |
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| 作者单位： | 1.华南农业大学 材料与能源学院 生物基材料与能源教育部重点实验室，广州 510642 |
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| 基金项目： | 国家自然科学基金(31700494,31870547);生物质材料科学与技术教育部重点实验室(东北林业大学)开放基金(SWZ-ZD201905);国家重点研发计划课题(2019YFD1101203);广州市重点实验室项目(201905010005)。 |
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| 摘 要： | 制备了不同杨木纤维含量的杨木纤维/聚乙烯复合材料，利用Hirsch模型、Kelly-Tyson模型和Bowyer-Bader模型对杨木纤维/聚乙烯复合材料的微观力学进行建模，通过对杨木纤维/聚乙烯复合材料及塑料基体的拉伸应力-应变曲线和杨木纤维长度分布的研究，计算得到杨木纤维在聚乙烯基体中的取向系数、界面剪切强度和本征抗拉强度，解释了杨木纤维/聚乙烯复合材料拉伸性能的变化规律。此外，利用微观力学模型计算得到了亚临界纤维、超临界纤维、塑料基体对杨木纤维/聚乙烯复合材料拉伸强度的贡献比例。
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| 关 键 词： | 微观力学 纤维含量 拉伸性能 Kelly-Tyson模型 Bowyer-Bader模型 |
| 收稿时间： | 2020-03-18 |
Micromechanical model of tensile properties of poplar fiber/polyethylene composite |
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| SUN Hongyu,LV Xingcong,GUO Chuigen,WANG Qingwen,YUAN Naxin,SUN Lichao.Micromechanical model of tensile properties of poplar fiber/polyethylene composite[J].Acta Materiae Compositae Sinica,2021,38(1):155-164. |
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| Authors: | SUN Hongyu LV Xingcong GUO Chuigen WANG Qingwen YUAN Naxin SUN Lichao |
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| Affiliation: | 1.Key Laboratory for Bio-based Materials and Energy of Ministry of Education, College of Material and Energy, South China Agricultural University, Guangzhou 510642, China2.Key Laboratory of Bio-based Material Science and Technology (Ministry of Education), Northeast Forestry University, Harbin 150040, China3.Guangdong Laboratory of Lingnan Modern Agriculture, Guangzhou 510642, China |
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| Abstract: | The poplar fiber/polyethylene composites with different contents of poplar fiber were prepared.The micromechanics of poplar fiber/polyethylene composites were modeled by Hirsch model,Kelly-Tyson model and Bowyer-Bader model.By studying the tensile stress-strain curves of the poplar fiber/polyethylene composite and plastic matrix and the length distribution of poplar fiber in the composite,the orientation coefficient,interfacial shear strength and intrinsic tensile strength of poplar fiber in polyethylene matrix were calculated,and the variation law of the tensile properties of poplar fiber/polyethylene composites was explained.In addition,the contribution ratio of subcritical fiber,supercritical fiber,plastic matrix to the tensile strength of poplar/polyethylene composites was obtained by using micromechanical model calculation. |
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| Keywords: | micromechanics fiber content tensile behavior Kelly-Tyson model Bowyer-Bader model |
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