弱刚性CFRP/Ti叠层结构钻削层间缺陷分析及抑制

骆彬; 张开富; 程晖; 刘书暖

doi:10.13433/j.cnki.1003-8728.2016.1111

弱刚性CFRP/Ti叠层结构钻削层间缺陷分析及抑制

doi: 10.13433/j.cnki.1003-8728.2016.1111

1.
西北工业大学机电学院, 西安 710072

基金项目:

国家自然科学基金项目（51305352，51475379）与中央高校基本科研业务费专项资金项目（3102014JCS05008）资助

详细信息

作者简介:
骆彬(1989-),博士研究生,研究方向为数字化装配技术及装备,bbnroad@163.com

通讯作者:
张开富(联系人),教授,博士生导师,zhangkf@nwpu.edu.cn

计量
- 文章访问数: 236
- HTML全文浏览量: 31
- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2015-04-25
- 刊出日期: 2016-11-05

Analyses and Control of Interlayer Defects in Drilling Low-stiffness CFRP/Ti Stacks

1.
School of Mechanical Engineering, Northwestern Polytechnical University, Xi'an 710072, China

摘要

摘要: 针对弱刚性CFRP/Ti叠层结构钻孔过程，求解引起叠层结构层间间隙的钻削轴向力，提出抑制层间缺陷的临界压脚力预测模型，设计以工件刚度和进给率为变量的钻削实验，研究层间缺陷形式及其与实验变量间的关系。层间缺陷形成于切屑在层间间隙的扩展和累积过程中，表现为层间积屑和复材表面划伤，随进给率增加和工件刚度减小而增加。相关性分析表明层间缺陷与层间间隙间存在正线性关系。压脚力能有效减小层间间隙、抑制层间缺陷，当其等于临界值时层间缺陷几乎不存在。
- CFRP/Ti叠层结构 /
- 钻削 /
- 层间缺陷 /
- 压脚力 /
- 层间间隙
Abstract: In drilling hybrid structure of composite materials and titanium alloys, thrust force that results in interlayer gap was calculated, the predictive model of critical pressure foot force was established for elimination of interlayer damage. Experiments were carried out with varying feed rate and stiffness of workpiece. The formation of interlayer defects was studied, as well as the relationship between interlayer defects and experimental parameters. Interlayer defects include interlayer chips and scratch of composite surface, which are formed during extending and accumulating process of chips along interlayer gap. The defects increase with the increasing of feed rate and the decreasing of stiffness. Correlation analysis shows a significant positive relationship between interlayer defects and interlayer gap. Pressure foot force will reduce the interlayer gap and defects. When the pressure foot force equals the critical value there is almost no interlayer defects.
- composite materials /
- interlayer damage /
- pressure foot force /
- predictive model /
- stiffness

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参考文献(16)

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