聚合物基复合材料变参蠕变模型

玻璃钢/复合材料 ›› 2019, Vol. 0 ›› Issue (12): 39-42.

聚合物基复合材料变参蠕变模型

梁娜¹, 朱四荣^2*

1.湖北科技学院,咸宁437100;
2.武汉理工大学理学院,武汉430070

收稿日期:2019-03-13 出版日期:2019-12-28 发布日期:2019-12-28
通讯作者: 朱四荣(1969-),女,博士,教授,主要从事复合材料长期性能方面的研究,zsrsilvia@126.com。
作者简介:梁娜(1978-),女,博士,副教授,主要从事复合材料长期性能方面的研究。
基金资助:
湖北科技学院博士启动基金(2018-20XB008)

VARIATION COEFFICIENTS MODEL FOR CREEP OF POLYMER MATRIX

LIANG Na¹, ZHU Si-rong^2*

1.Hubei University of Science and Technology, Xianning 437100, China;
2.School of Science, Wuhan University of Technology, Wuhan 430070, China

Received:2019-03-13 Online:2019-12-28 Published:2019-12-28

摘要/Abstract

摘要： 将标准三元件黏弹模型中的黏壶扩展为广义黏壶,认为黏滞系数是时间的函数,构造出一种变参三元件模型,求解了其本构方程及蠕变应变。运用最小二乘原理,建立了该模型参数的确定方法。理论分析了该模型适合描述聚合物基复合材料前两个阶段的蠕变行为。开展了连续纤维增强FRP单向板在应力水平为30%恒定荷载下的蠕变实验,并通过实验数据的分析,验证了该模型的正确性。

关键词: 聚合物基复合材料, 蠕变应变, 经验函数, 连续纤维增强FRP单向板

Abstract: The dashpot of standard three-element viscoelastic model is extended to the generalized based on the assumption that the coefficient of viscosity is a function of time. A variation coefficients model for creep is established. The creep strain is obtained by resolving the variable parameter constitutive relation. The parameter determination method was established by the principle of the least square. The theoretical analysis shows that the model is suitable for describing the creep behavior of GFRP composites in the first two stages. The creep tests of glass-fiber reinforced plastic (GFRP) unidirectional plate has been conducted, and the proposed model was verified through the experimental data.

Key words: polymer matrix composites, creep strain, empirical function, GFRP unidirectional plate

中图分类号:

TB332

梁娜, 朱四荣. 聚合物基复合材料变参蠕变模型[J]. 玻璃钢/复合材料, 2019, 0(12): 39-42.

LIANG Na, ZHU Si-rong. VARIATION COEFFICIENTS MODEL FOR CREEP OF POLYMER MATRIX[J]. Fiber Reinforced Plastics/Composites, 2019, 0(12): 39-42.

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