考虑纤维随机分布的复合材料热残余应力分析及其对横向力学性能的影响

复合材料学报, 2016, 33(3): 525-534. doi: 10.13801/j.cnki.fhclxb.20150729.001

考虑纤维随机分布的复合材料热残余应力分析及其对横向力学性能的影响

杨雷 ^1, , 刘新 ^2, , 高东岳 ^3, , 王阳 ^4, , 武湛君 ^5,

1.大连理工大学工业装备结构分析国家重点实验室,航空航天学院,大连116024

2.大连理工大学工业装备结构分析国家重点实验室,航空航天学院,大连116024

3.大连理工大学工业装备结构分析国家重点实验室,航空航天学院,大连116024

4.空间物理重点实验室,北京,100076

5.大连理工大学工业装备结构分析国家重点实验室,航空航天学院,大连116024

基金项目: 中央高校基本科研业务费专项资金(DUT14RC-(3)058) 国家自然科学基金(11402045,11302036) 中国博士后科学基金(2014M560204)

关键词：纤维增强复合材料 , 热残余应力 , 代表性体积单元 , 纤维随机分布 , 横向力学性能 , 数值模拟

Analysis on thermal residual stress of composites with random fiber distribution and its effects on transverse mechanical properties

Keywords： fiber reinforced composites , thermal residual stress , representative volume element , random fiber distribution , transverse mechanical properties , numerical simulation

建立了考虑纤维随机分布并包含界面的复合材料微观力学数值模型,模拟玻璃纤维/环氧复合材料固化过程中的热残余应力.通过与纤维周期性分布模型的计算结果进行对比,发现纤维分布形式会对复合材料的热残余应力产生重要影响,纤维随机分布情况下的最大热残余应力明显大于纤维周期性分布的情况下.研究了含热残余应力的复合材料在横向拉伸与压缩载荷下的损伤和破坏过程,结果表明:热残余应力的存在显著影响了复合材料的损伤起始位置和扩展路径,削弱了复合材料的横向拉伸和压缩强度.在横向拉伸载荷下,考虑热残余应力后,复合材料的强度有所下降,断裂应变显著降低;在横向压缩载荷下,考虑热残余应力后,复合材料的强度略有下降,但失效应变基本保持不变.由于热残余应力的影响,复合材料的横向拉伸和压缩强度分别下降了10.5％和5.2％.

参考文献

[1]	Patricia P. Parlevliet;Harald E.N. Bersee;Adriaan Beukers.Residual stresses In thermoplastic composites-A study of the literature-Part I: Formation of residual stresses[J].Composites, Part A. Applied science and manufacturing,200611(11):1847-1857.
[2]	Patricia P. Parlevliet;Harald E.N. Bersee;Adriaan Beukers.Residual stresses in thermoplastic composites-a study of the literature. Part III: Effects of thermal residual stresses[J].Composites, Part A. Applied science and manufacturing,20076(6):1581-1596.
[3]	Patricia P. Parlevliet;Harald E.N. Bersee;Adriaan Beukers.Residual stresses in thermoplastic composites--A study of the literature--Part II: Experimental techniques[J].Composites, Part A. Applied science and manufacturing,20073(3):651-665.
[4]	胡更开;黄国良.残余应力对复合材料弹-塑性变形的影响[J].复合材料学报,2000(2):60-65.
[5]	杨仲;张博明.基于压力隧洞模型的复合材料横向热残余应力分析[J].固体力学学报,2009(2):148-154.
[6]	张博明;杨仲;孙新杨;王晓宏.含界面相复合材料热残余应力分析[J].固体力学学报,2010(2):142-148.
[7]	B. Fiedler;M. Hojo;S. Ochiai;K. Schulte;M. Ochi.Finite-element modeling of inital matrix failure in CFRP under static tansverse tesile load[J].Composites science and technology,20011(1):95-105.
[8]	Jin KK;Oh JH;Ha SK.Effect of fiber arrangement on residual thermal stress distributions in a unidirectional composite[J].Journal of Composite Materials,20075(5):591-611.
[9]	T. Hobbiebrunken;M. Hojo;K.K. Jin;S.K. Ha.Influence Of Non-uniform Fiber Arrangement On Microscopic Stress And Failure Initiation In Thermally And Transversely Loaded Cf/epoxy Laminated Composites[J].Composites science and technology,200815/16(15/16):3107-3113.
[10]	Carlos Gonzalez;Javier LLorca.Mechanical behavior of unidirectional fiber-reinforced polymers under transverse compression: Microscopic mechanisms and modeling[J].Composites science and technology,200713(13):2795-2806.
[11]	Lei Yang;Ying Yan;Zhiguo Ran;Yujia Liu.A new method for generating random fibre distributions for fibre reinforced composites[J].Composites science and technology,2013Mar.(Mar.):14-20.
[12]	Yunfa Zhang;Zihui Xia;Fernand Ellyin.Evolution and influence of residual stresses/strains of fiber reinforced laminates[J].Composites science and technology,200410/11(10/11):1613-1621.
[13]	B. Fiedler;M. Hojo;S. Ochiai.Failure behavior of an epoxy matrix under different kinds of static loading[J].Composites science and technology,200111(11):1615-1624.
[14]	Canal, LP;Segurado, J;LLorca, J.Failure surface of epoxy-modified fiber-reinforced composites under transverse tension and out-of-plane shear[J].International Journal of Solids and Structures,200911/12(11/12):2265-2274.
[15]	Lei Yang;Ying Yan;Yujia Liu;Zhiguo Ran.Microscopic failure mechanisms of fiber-reinforced polymer composites under transverse tension and compression[J].Composites science and technology,201215(15):1818-1825.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网