纤维缠绕复合材料固化成型中纤维密实过程数值模拟

玻璃钢/复合材料 ›› 2016, Vol. 0 ›› Issue (8): 5-12.

• 基础研究 • 下一篇

纤维缠绕复合材料固化成型中纤维密实过程数值模拟

任明法, 刘长志, 丛杰, 张靖

大连理工大学工业装备结构分析国家重点实验室,大连116024

收稿日期:2016-02-18 出版日期:2016-08-28 发布日期:2016-08-28
作者简介:任明法(1974-),男,博士,副教授,主要从事复合材料力学与复合材料工艺力学方面的研究,renmf@dlut.edu.cn。
基金资助:
国家自然科学基金(11372058);973国家重点基础研究发展计划(2014CB046506,2014CB049000);中央高校基本科研业务费专项资金资助(DUT15TD21)

NUMERICAL SIMULATION ON FIBER COMPACTION PROCESS OF FIBER WINDING COMPOSITES IN CURING PROCESS

REN Ming-fa, LIU Chang-zhi, CONG Jie, ZHANG Jing

State Key Laboratory of Structural Analysis for Industrial Equipment, Dalian University of Technology, Dalian 116024, China

Received:2016-02-18 Online:2016-08-28 Published:2016-08-28

摘要/Abstract

摘要： 纤维缠绕复合材料固化成型过程中,缠绕制件的纤维密实程度及单层厚度受缠绕张力、树脂流动影响较大。基于Squeeze-sponge模型,发展了适用于纤维缠绕复合材料固化成型的树脂流动/纤维密实模型。该密实模型考虑了固化度、温度、树脂黏度、渗透率等参数随固化时间的变化特性,并引入缠绕张力、缠绕图案等缠绕特征,实现缠绕制件纤维密实过程的数值模拟。通过对比文献结果,证明了密实模型的可靠。基于密实模型,对不同缠绕张力制度下的纤维密实程度进行数值模拟,结果表明,相较于各层缠绕张力相等的缠绕制度,采用层间压力相等的缠绕制度时,树脂分布更加均匀,各层纤维体分比数值趋于一致,且适当提高远离树脂出口位置的缠绕张力可实现各层纤维体分比数值相等。

关键词: 纤维缠绕复合材料, 树脂流动, 固化成型, 纤维密实, 数值模拟

Abstract: In the curing process of fiber winding composites, the fiber volume fractions and the thickness of winding layer are affected by the performance of resin flow and winding tension. Based on Squeeze-sponge′ model, a corresponding finite element model is developed to simulate resin flow and fiber compaction process in the curing process. The curing degree, temperature, resin viscosity and permeability of fiber winding composites are taken into account. Winding features including winding tension and winding patterns are considered. According to data in reference, the numerical model was proved to possess relative superior reliability. The effects of the variation of winding tension on the resin pressure, fiber volume fractions during curing process was studied attentively. It is found that when prepreg tape wind with constant interlaminar stress, resin distributes more symmetrically in the radial direction, and fiber volume fraction of layers tend to be more uniform compared with prepreg tape winding with constant tension. Increasing winding tension of layers which are away from the resin export can make fiber volume fraction equal in every layer.

Key words: fiber winding composites, resin flow, curing process, fiber compaction, numerical simulation

中图分类号:

TB332

任明法, 刘长志, 丛杰, 张靖. 纤维缠绕复合材料固化成型中纤维密实过程数值模拟[J]. 玻璃钢/复合材料, 2016, 0(8): 5-12.

REN Ming-fa, LIU Chang-zhi, CONG Jie, ZHANG Jing. NUMERICAL SIMULATION ON FIBER COMPACTION PROCESS OF FIBER WINDING COMPOSITES IN CURING PROCESS[J]. Fiber Reinforced Plastics/Composites, 2016, 0(8): 5-12.

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纤维缠绕复合材料固化成型中纤维密实过程数值模拟

NUMERICAL SIMULATION ON FIBER COMPACTION PROCESS OF FIBER WINDING COMPOSITES IN CURING PROCESS

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