树脂基碳纤维卷铺管件热残余应力分析

玻璃钢/复合材料 ›› 2016, Vol. 0 ›› Issue (2): 18-23.

树脂基碳纤维卷铺管件热残余应力分析

刘加顺, 李峰^*, 张恒铭

解放军理工大学野战工程学院,南京210007

收稿日期:2015-08-24 出版日期:2016-02-20 发布日期:2016-02-20
通讯作者: 李峰(1979-),男,博士,讲师,研究方向为复合材料力学,lifeng7949@163.com。
作者简介:刘加顺(1992-),男,硕士生,研究方向为树脂基复合材料结构设计。
基金资助:
国家自然科学基金资助(51408606);国家科技支撑计划(2014BAB15B01)

THERMAL RESIDUAL STRESS ANALYSIS OF POLYMER MATRIX CARBONFIBER REINFORCED COMPOSITE WINDING TUBES

LIU Jia-shun, LI Feng^*, ZHANG Heng-ming

College of Field Engineering, PLA University of Science &
Technology, Nanjing 210007, China

Received:2015-08-24 Online:2016-02-20 Published:2016-02-20

摘要/Abstract

摘要： 对树脂基碳纤维卷铺管在高温固化后冷却至室温过程中进行了热应变实验,基于实体单元的分层属性建立了多种铺层复合材料管件的热残余应力数值模型,数值计算结果与实验结果吻合较好。在该数值模型基础上,从纤维方向应力的角度分析了铺层角度、环向层纤维含量、环向层铺设位置以及径厚比对卷铺管件热残余应力的影响。结果表明,上述诸因素均对残余应力有较大的影响,(±φ)_n铺层和90°/0°正交组合铺层中的0°纤维在纤维方向上残余应力均为轴向受压、环向受拉,该应力状态可能导致管件出现微裂缝等初始缺陷。

关键词: 卷铺管, 热残余应力, 数值模型, 纤维方向应力状态

Abstract: Thermal strain test of polymer matrix carbon fiber-reinforced composite winding tube curing on high temperature was carried out during the process of cooling to room temperature. The thermal residual stress numerical model of composite tube with various plies was established based on hierarchical attributes of the entity unit and the numerical results are in good agreement with the test results. On the basis of the numerical model, from the respect of the stress of fiber direction, the influence factor of thermal residual stress, such as the ply angle, contents of hoop fiber, position of hoop lays and the aspect ratio of the winding tube, are analyzed. The results show that the above influence factors have great influence on the residual stress. The residual stress in the fiber direction of the ply angle of 公式 and the 90°/0° plies orthogonal combination 0° fibers are compressive, and the hoop direction are extensive, which could cause the pipe initial defect micro-cracks.

Key words: winding tube, thermal residual stress, numerical model, the stress station of fiber direction

中图分类号:

TB332
V414.8

刘加顺, 李峰, 张恒铭. 树脂基碳纤维卷铺管件热残余应力分析[J]. 玻璃钢/复合材料, 2016, 0(2): 18-23.

LIU Jia-shun, LI Feng, ZHANG Heng-ming. THERMAL RESIDUAL STRESS ANALYSIS OF POLYMER MATRIX CARBONFIBER REINFORCED COMPOSITE WINDING TUBES[J]. Fiber Reinforced Plastics/Composites, 2016, 0(2): 18-23.

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