SW220/430LV复合材料拉-拉疲劳强度材料许用值试验研究

复合材料科学与工程 ›› 2015, Vol. 0 ›› Issue (9): 11-16.

SW220/430LV复合材料拉-拉疲劳强度材料许用值试验研究

陈国涛, 梅志远^*, 李华东

海军工程大学舰船工程系,武汉 430033

收稿日期:2015-03-19 出版日期:2015-09-28 发布日期:2021-09-14
通讯作者: 梅志远(1973-),男,博士,硕士生导师,研究方向为舰船复合材料结构应用工程, zhiyuan_mei@163.com。
作者简介:陈国涛(1990-),男,硕士,主要从事船舶材料与应用工程。
基金资助:
国家自然科学基金面上项目资助(51479205)

THE EXPERIMENTAL RESEARCH FOR DESIGN ALLOWABLE OF TENSION STRENGTH OF SW220/430LV COMPOSITE MATERIAL

CHEN Guo-tao, MEI Zhi-yuan^*, LI Hua-dong

Ship Engineering, Naval University of Engineering, Wuhan 430033, China

Received:2015-03-19 Online:2015-09-28 Published:2021-09-14

摘要/Abstract

摘要： 拉伸强度材料许用值是开展舰用复合材料结构设计所需的重要指标参量。SW220/430LV复合材料是目前较为常用的舰用复合材料体系之一。首先依据规范GB/T 1447-2005开展0°/90°铺层试件拉伸强度试验研究,并根据B基准值要求,得出拉伸强度基准值X_T。在此基础上,分别针对不同折减系数条件下的载荷值,开展拉-拉疲劳特性、疲劳承载后剩余强度/刚度试验研究,并同时探讨了载荷特征、应力比、加载频率、疲劳周期等对SW220/430LV复合材料疲劳特性的影响规律。研究结果表明,当计及结构疲劳承载时,SW220/430LV复合材料拉伸强度材料许用值可取为0.45X_T。

关键词: 拉伸强度材料许用值, SW220/430LV复合材料, 拉-拉疲劳, 折减系数, 剩余刚度

Abstract: The tensile strength design value is an important guideline to weigh the intensity of composite laminates. SW220/430LV composite material is a kind of typical composite material widely used in warships. In order to explore the intensity, the paper carried out the investigation about the tension strength of 0°/90° with referring to GB/T 1447-2005, and worked out tensile strength X_T by B-base value. Then, we get loads responsible to reduction coefficient to make research about tension-shear fatigue and the left stiffness, shear strength, and explore effects of the load characteristics, such as stress ratio, frequency, fatigue cycle to the SW220/430LV composite material at the same time. According to our research, we take 0.45 X_T as the design tensile strength design value for SW220/430LV composite material, when allowing for mechanical fatigue.

Key words: the tensile strength design values, SW220/430LV composite material, tension-tension fatigue, reduction coefficient, left stiffness

中图分类号:

TB332

陈国涛, 梅志远, 李华东. SW220/430LV复合材料拉-拉疲劳强度材料许用值试验研究[J]. 复合材料科学与工程, 2015, 0(9): 11-16.

CHEN Guo-tao, MEI Zhi-yuan, LI Hua-dong. THE EXPERIMENTAL RESEARCH FOR DESIGN ALLOWABLE OF TENSION STRENGTH OF SW220/430LV COMPOSITE MATERIAL[J]. COMPOSITES SCIENCE AND ENGINEERING, 2015, 0(9): 11-16.

参考文献

[1] 沈真, 张晓晶. 复合材料飞机结构强度设计与验证概论. 上海: 上海交通大学出版社, 2011.1-11.
[2] R.A.SHENIO, J.F.WELLICOME.Composite Materials in Maritime Structures. Cambridge University Press, 1993, 3-4: 179-197.
[3] Department of Defence. Polymer Matrix Composites Guidelines for Characteristic of Structural Materials. United States of America:
[4] 2002.
[5] 欧阳吕伟, 吴剑国. 基于可靠性的潜艇结构安全系数研究总结报告. 2005.
[6] 沈真. 复合材料结构设计手册. 北京: 航空工业出版社,
[7] 2001.
[8] 刘文珽. 结构可靠性设计手册. 北京: 国防工业出版社, 2008. 143-200.
[9] Abouelheiga M. Component Design for Automated Aircraft Composite Structure Manufacture .2010.
[10] 徐孝诚. 复合材料结构强度散布特性及可靠性问题的讨论. 强度与环境, 1991, 25-29.
[11] Wang C H, Miller K J. Short fatigue crack growth under mean stress, uniaxial loading. Fatigue and Fracture of Materials and Structures, 1993,16(2): 181-198.
[12] Du Quesnay D L, Topper T H, et al. The effect of notch radius on the fatigue notch factor and the propagation of short cracks. London: M.E.P, 1986. 323-335.
[13] Miller K J. The behavior of short fatigue cracks and their initiation Part Ⅰ-A review of two recent books. Fatigue and Fracture of Materials and Structures, 1993, 16(2): 181-198.
[14] Seneviratne W. fatigue-Life Determination of Damage-Tolerant Composite airframe.Wichita State University, 2008.
[15] 翟洪军, 姚卫星. 纤维增强树脂基复合材料的疲劳剩余刚度研究进展. 力学进展, 2002, 32(1): 69-80.
[16] 刘鸿文. 材料力学. 北京: 高等教育出版社, 2004.
[17] 崔志华. 复合材料层压板的疲劳特性. 北京: 教育科学出版社, 1996.
[18] 姚卫星. 结构疲劳寿命分析. 北京: 航空工业出版社, 2003.