研究主旨是分析鑽削薄圓管的臨界脫層力量;早先所知之薄平板的臨界脫層鑽削力使用彈性力學;本研究所使用的理論基礎係出自於板殼理論,再搭配基本的能量守恆原理俾找出薄圓管的鑽削脫層臨界力量。推導出來的結果顯示圓管脫層的情形會隨著鑽頭直徑相對於圓管的直徑大小而改變,鑽頭直徑相對圓管直徑越大則臨界進給力量必須變小較能避免脫層,如果臨界進給力量不變則在鑽頭直徑相對薄圓管直徑越大時脫層狀況會越嚴重。

In this study the author tried to establish a mathematical model based on Theory of Plates and Shell which includes parameters such as critical thrust force and material properties of composite tubes. Drilling is frequently applied in manufacturing laminate plates for joining parts together, which often causes delamination at the interface between drills and plates. The defect happens in drilling composite thin tubes too. Delamination is one of the major concerns in composite drilling, which will reduce the mechanical strength of composite material. For increasing usage of composite thin tubes in aerospace and automobile, delamination prediction is of serious safety interest.

[1]. H. Hocheng,1990,”Drilling of composite materials” . ASME J. Engng Ind, 112
[2]. S.Timoshenko,1989,”Theory of plates and shells” McGraw-Hill Book Company
[3]. D. Briassoulis,2003,“Asymptotic deformation modes of benchmark problems suitable for evaluating shell elements” Computer Methods in Applied Mechanics and Engineering, 194
[4]. G.J Short, F.J Guild, M.J Pavier,2001,”Delaminations in flat and curved composite laminates subjected to compressive load” Science Direct, Composite structures, Volume 58,issue 2
[5]. VP. Troshin,1982,”Effect of longitudinal delamination in a laminar cylindrical shell on the critical external pressure” Springer Link, Mechanic of Composite materials, Volume 18, Issue 5, 563-567
[6]. X. Zhao,2007,”Geometrically nonlinear analysis of cylindrical shells using the element-free kp-Ritz method” Science Direct, Engineering Analysis with Boundary Elements Volume 31, Issue 9, September 2007, Pages 783–792
[7]. J Yang,2006 ,”Variational analysis of delamination growth for composite laminated cylindrical shells under circumferential concentrated load” China Composites Science and Technology,541-550
[8]. S. Kyriakides, P.K. Shaw,1982,”Response and stability of elastoplastic circular pipe under combined bending and external pressure” 成功大學工程科學研所碩士論文
[9]. P.K. Shaw, S. Kyriakides,1985,”Inelastic analysis of thin-walled tube under cyclic bending inelastic buckling of tube under cyclic bending” 成功大學工程科學研所碩士論文
[10]. E. Corona, S. Kyriakides,1988,”On the collapse of inelastic tubes under combined bending and pressure” 成功大學工程科學研所碩士論文
[11]. Edmundo Corona, Stelios Kyriakides,1991”An experimental investigation of degradation and buckling of circular tube under cyclic bending and External pressure” USA ,Thin-Walled Structures,229-263
[12].林俊宏,2006,”Finite element Ansys analysis on the mechanical behavior of circular tube under cyclic bending”成功大學工程科學研所碩士論文
[13]. Zhenchao Qi, Kaifu Zhang , Yuan Li, Shunuan Liu, Hui Cheng, 2014 ,” Critical thrust force predicting modeling for delamination-free drilling of metal-FRP stacks”, China Composites Science and Technology,604-609
[14]. Jin Pyo Jung, Geun Woo Kim, Kang Yong Lee, 2004,“Critical thrust force at delamination propagation during drilling of angle-ply laminates”, Composite Structures
[15] H. Hocheng and C. C. Tsao,2007 “Effect of tool wear on delamination in drilling composite materials”, International Journal of Mechanical Science, Vol. 49, pp. 983-988
[16] S. Abrate and D. A. Walton,1992, “Machining composite materials”, Composite Manufacturing, Vol. 3, No. 2,75-83
[17] W. Konig, et al,1984, “Developments in drilling, contouring composites containing kelvar”, The Production Engineer, sept, pp. 56-61
[18] H. Hocheng and C. C. Tsao,2005, “Effect of exit back-up on delamination in drilling composite materials using saw drill and core drill”, International Journal of Machine Tools & Manufacture, Vol. 45,
pp.1261-1270
[19] D. Bhattacharyya and D. P. W. Horrigan, 1998,“A study of hole drilling in composites”, Composites Science and Techanology, Vol. 58,
pp.267-283
[20] C. C. Tsao,2007, “Effect of pilot hole on thrust force by saw drill”, International Journal of Machine Tools & Manufacture, Vol. 47,
pp.2172-2176
[21] H. Hocheng and C. C. Tsao, 2008,“Analysis of delamination in drilling of composite materials by core-saw drill”, International Journal
Materials and Product Technology, Vol. 32, pp.188-201
[22] W. E. Lawson, 1986,“Laser cutting of composite”, Society of
Manufacturing, Composites for Manufacturing Engineers,
pp.1-10
[23] W. S. Lau, M. Wang, and W. B. Lee, 1990,“Electrical discharge
machining of carbon fiber composite materials”, International
Journal of Machine Tools & Manufacture, Vol. 30, pp.297-308
[24] H. Hocheng,1990, “A failure analysis of water jet drilling in composite laminates” , International Journal of Machine Tools & Manufacture,Vol. 30, pp.423-429
[25] 何福保, ‎沈亚鹏,”板殼理論”,1993,西安交通大学出版社