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中南大学学报(英文版)

Journal of Central South University

Vol. 26    No. 10    October 2019

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Investigation on temperature field of unidirectional carbon fiber/epoxy composites during drilling process
BAO Yong-jie(鲍永杰)1, WANG Yi-qi(王一奇)2, GAO Hang(高航)2, LIU Xue-shu(刘学术)3, ZHANG Yi-ni(张旖旎)4

1. Engineering Training Center, Dalian University of Technology, Dalian 116024, China;
2. Key Laboratory of Ministry of Education for Precision and Non-Traditional Machining Technology, School of Mechanical Engineering, Dalian University of Technology, Dalian 116024, China;
3. School of Automotive Engineering, Dalian University of Technology, Dalian 116024, China;
4. Shenyang Liming Aero-Engine Group Corporation Ltd., Shenyang 110043, China

Abstract:The phenomenon of heat accumulation and transportation in the composite materials is a very typical and critical issue during drilling process. In this study, a three-dimensional temperature field prediction model is proposed using finite difference method, based on the partly homogenization hypothesis of material, to predict temperature field in the process of drilling unidirectional carbon fiber/epoxy (C/E) composites. According to the drilling feed motion, drilling process is divided into four stages to study the temperature distributing characteristics. The results show that the temperature distribution predicted by numerical study has a good agreement with the experimental results. The temperature increases with increasing the drilling depth, and the burn phenomena is observed due to the heat accumulation, especially at the drill exit. Due to the fiber orientation, an elliptical shape of the temperature field along the direction is found for both numerical and experimental studies of C/E composites drilling process.

 

Key words: composite; drilling; finite difference method; temperature field; thermal analysis

中南大学学报(自然科学版)
  ISSN 1672-7207
CN 43-1426/N
ZDXZAC
中南大学学报(英文版)
  ISSN 2095-2899
CN 43-1516/TB
JCSTFT
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