橡胶复合材料疲劳破坏特性

田振辉; 谭惠丰; 谢礼立

橡胶复合材料疲劳破坏特性

1.
中国地震局工程力学研究所哈尔滨 150080;
2.
哈尔滨工业大学复合材料研究所哈尔滨 150001

基金项目: 黑龙江省自然科学基金资助项目(A0309); 中国博士后科学基金资助项目; 哈尔滨市科技攻关计划资助项目

详细信息

通讯作者:
田振辉,博士,副研究员,从事柔性复合材料疲劳损伤、空间充气结构材料的研究 E-mail:tianzh@hit.edu.cn

中图分类号: TB332;V25513
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出版历程
- 收稿日期: 2004-02-24
- 修回日期: 2004-07-24
- 刊出日期: 2005-02-14

FATIGUE DAMAGE PROPERTIES OF RUBBER COMPOSITES

1.
Institute of Engineering Mechanics, China Earthquake Bureau, Harbin 150080, China;
2.
Centre for Composite Materials, Harbin Institute of Technology, Harbin 150001 China

摘要

摘要: 分别对[0⁰ ]和[ ±20⁰ ]橡胶复合材料在拉伸循环载荷下的疲劳损伤进行了实验研究。两类材料的周期最大应变随循环周次的变化遵循三阶段规律, 三个阶段对应着疲劳损伤从萌生、稳定扩展到加速扩展直至整体破坏的过程。单层和双层材料的疲劳破坏分别为帘线控制和基体控制。实验表明, 用加载最大应力表征的疲劳寿命与循环周次的对数近似成线性关系。疲劳过程中材料的滞后损失基本保持不变。滞后损失和导热系数的差异是造成不同种类试件表面温升差异的主要原因。
- 橡胶复合材料 /
- 疲劳 /
- 损伤 /
- 滞后损失
Abstract: The fatigue damage properties of [0⁰ ] single2ply and [ ±20⁰ ] double-ply rubber composite under T-T loading were studied. The results show that the variation of the cycle strain of both kinds of material in the fatigue process exhibits three stages which are corresponding to damage initiation , steady damage propagation and catastrophic failure. Thefatigue damage is controlled by cord properties for the single-ply rubber composites and by matrix properties for the doubleply rubber composite respectively. The logarithmic fatigue life expressed by maximum stress follows a linear trend. Thehysteretic loss keeps constant until the end of the fatigue life. The difference between hysteretic loss and the thermoconductivity results in a difference in the surface temperature between different specimens.
- rubber composite /
- fatigue /
- damage /
- hystereticloss