橡胶技术网

合成橡胶工业
CHINA SYNTHETIC RUBBER INDUSTRY
2001 Vol.24 No.3 P.166-168

橡胶技术网

橡胶层合复合材料的疲劳损伤

田振辉  苗常青  万志敏  杜星文 

摘 要:研究了(±20°)钢丝帘线/橡胶复合材料在单级和两级拉伸循环载荷下疲劳损伤的累积规律。结果表明:在载荷控制的疲劳过程中,材料的周期最大应变发展曲线呈现明显的三阶段规律;疲劳寿命与最大应力近似呈对数线性关系。各级载荷下,周期最大应变发展曲线都具有线性稳定增长的第二阶段。两级加载实验初步证明Palmgren-Minner法则仅适用于第一级疲劳条件比第二级疲劳条件轻缓的情况。
关键词:橡胶复合材料;钢丝帘线;层合结构;疲劳特性;损伤
分类号:TB332 文献标识码:A

文章编号:1000-1255(2001)03-0166-03

Study on fatigue damage of a laminated rubber composite

Tian ZhenhuiCenter for Composite Materials, Harbin Institute of Technology, Harbin 150001, China) 
Miao ChangqingCenter for Composite Materials, Harbin Institute of Technology, Harbin 150001, China) 
Wan ZhiminCenter for Composite Materials, Harbin Institute of Technology, Harbin 150001, China) 
Du XingwenCenter for Composite Materials, Harbin Institute of Technology, Harbin 150001, China) 

AbstractThe fatigue damage accumulation of (± 20) laminated steel- cord rubber composite under step 1 and step 2 T- T loading was studied.The results indicated that the increase in the maximum strain exhibited three- stage tendency in the process of fatigue. The fatigue life was linear to the logarithmic maximum stress. Under both step 1 and step 2 loading, the second stage of the variation curve of cyclic maximum strain followed a linear trend, demonstrating that the inner damage of the material growthed steadily with loading cycles. Step 2loading experiment showed that the PalmgrenMinner law was applicable only to the condition in which the step 2 fatigue loading was severer than the first one.
Keywords
rubber composite; steel cord; laminated structure; fatigue property; damage

基金项目:黑龙江省自然科学基金资助项目(98A15)。
作者简介:田振辉,男,1973年生,博士研究生。从事橡胶复合材料疲劳损伤的研究工作。已发表论文10余篇。
作者单位:田振辉(哈尔滨工业大学复合材料研究所,黑龙江哈尔滨150001) 
     苗常青(哈尔滨工业大学复合材料研究所,黑龙江哈尔滨150001) 
     万志敏(哈尔滨工业大学复合材料研究所,黑龙江哈尔滨150001) 
     杜星文(哈尔滨工业大学复合材料研究所,黑龙江哈尔滨150001) 

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收稿日期:2000年5月12日

修稿日期:2000年12月28日

出版日期:2001年5月15日