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[1]张响鹏,刘伟庆,万里,等.泡桐木夹层梁的弯曲疲劳试验[J].南京工业大学学报(自然科学版),2014,36(05):76-82.[doi:10.3969/j.issn.1671-7627.2014.05.014]
 ZHANG Xiangpeng,LIU Weiqing,WAN Li,et al.Bending fatigue experiment on paulownia core sandwich composite beam[J].Journal of NANJING TECH UNIVERSITY(NATURAL SCIENCE EDITION),2014,36(05):76-82.[doi:10.3969/j.issn.1671-7627.2014.05.014]
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泡桐木夹层梁的弯曲疲劳试验()
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《南京工业大学学报(自然科学版)》[ISSN:1671-7627/CN:32-1670/N]

卷:
36
期数:
2014年05期
页码:
76-82
栏目:
出版日期:
2014-09-30

文章信息/Info

Title:
Bending fatigue experiment on paulownia core sandwich composite beam
文章编号:
1671-7627(2014)05-0076-07
作者:
张响鹏刘伟庆万里龚海亮方海
南京工业大学 土木工程学院,江苏 南京 211800
Author(s):
ZHANG XiangpengLIU WeiqingWAN LiGONG HailiangFang Hai
College of Civil Engineering,Nanjing Tech University,Nanjing 211800,China
关键词:
复合材料夹层梁 疲劳寿命 失效率
Keywords:
sandwich composite beam fatigue life failure rate
分类号:
TB332;TB301
DOI:
10.3969/j.issn.1671-7627.2014.05.014
文献标志码:
A
摘要:
对采用真空导入工艺的泡桐木夹层梁进行4点弯曲疲劳试验,研究发现泡桐木夹层梁的破坏形式主要有界面的脱黏、芯材的剪切破坏、面板分层等。试验过程中采集试件的S-N曲线,采用3种寿命预测公式对其进行线性拟合,得到该泡桐木夹层梁的寿命预测公式。基于S-N曲线在实际工程中的应用,引入失效率的概念,采用双参数的Weibull函数分布,对不同应力等级下的失效率进行研究,从而得到泡桐木夹层梁P-S-N曲线。
Abstract:
Paulownia core sandwich composite beams manufactured by vacuum infusion molding process were tested by four-point flexural test for bending fatigue property research.It was found from the experiments that interface debonding, warp,shear and bending failure of core materials, and surface stratification were the main fatigue failure modes of the beams.The curves of fatigue stress versus cycles were collected and linearly fitted to obtain the fatigue life prediction formula of the beams.Based on S-N curves in practical engineering,the failure rate under different level of stress was studied by double parameter Weibull function method to obtain P-S-N curves.

参考文献/References:

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备注/Memo

备注/Memo:
收稿日期:2013-12-27
基金项目:国家自然科学基金重点项目(51238003); 国家自然科学基金青年科学基金(51208251)
作者简介:张响鹏(1987—),男,江苏徐州人,硕士生,主要研究方向为复合材料结构; 刘伟庆(联系人),教授,E-mail: wqliu@njtech.edu.cn..
更新日期/Last Update: 2014-09-20