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Dynamic Characteristics Recovery of Delaminated Composite Structure

층간 분리가 있는 복합재 구조물의 동적특성 회복

손 정우
,
김 흥수†
Sohn Jung Woo
,
Kim Heung Soo†
Department of Mechanical Design Engineering
Department of Mechanical
•*Corresponding author Kim, Heung Soo heungsoo@dgu.edu
2015. pp. 47-51
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Abstract

본 논문에서는 복합재 구조물에 손상이 있을 경우, 손상에 의해 변화된 구조물의 동적특성을 손상이 없는 상태로 회복하여, 전체 시스템의 안정성을 유지할 수 있도록 하였다. 층간 분리가 있는 구조물의 유한요소모델 구축을 위하여 향상된 층간 변위장 모델을 적용하였으며, 유한요소해석을 진행하여 구조물의 고유 진동수와 모드 형상을 관찰하였다. 능동제어 알고리즘과 압전 작동기를 적용하여 구조물의 진동 응답특성을 확인하였으며, 이를 바탕으로 손상된 구조물의 동적특성을 손상이 없는 상태로 회복할 수 있음을 확인하였다.

In this paper, feasibility of dynamic characteristics recovery of delaminated composite structure is numerically studied by using active control algorithm and piezoelectric actuator. Macro-fiber composite(MFC), which has great flexibility and high actuating force, is considered as an actuator in this work. After construction of finite element model for delaminated composite structure based on improved layerwise theory, modal characteristics are investigated and changes of natural frequencies and mode shapes, caused by delamination, are observed. Then, active control algorithm is realized and implemented to system model and control performances are numerically evaluated. Dynamic characteristics of delaminated composite structure are effectively recovered to those of healthy composite structure.

키워드
동적특성, 층간 분리, 복합재 구조물, 능동제어, 압전재료
dynamic characteristic, delamination, composite structure, active control, piezoelectric actuator
References
1
R.W., Campanelli and J.J., Engblom, 1995. The Effect of Delaminations in Graphite/PEEK Composite Plates on Modal Dynamic Characteristics. Compos. Struct., 31, pp.195-202.
10.1016/0263-8223(95)00009-7
2
M., Cho and J.S., Kim, 2001. Higher-order Zig-zag Theory for Laminated Composites with Multiple Delaminations. J. Appl. Mech.-Trans. ASME, 68, pp.869-877.
10.1115/1.1406959
3
H.S., Kim, A., Chattopadhyay and A., Choshal, 2003. Dynamic Analysis of Composite Laminates with Multiple Delamination using Improved Layerwise Theory. AIAA J., 41, pp.1771-1779.
10.2514/2.7295
4
H.S., Kim, J., Kim and S.B., Choi, 2005. Study on Dynamic Characteristics of Delaminated Smart Composite Laminates. Trans. Korean Soc. Noise &Vib. Eng., 15, pp.395-403.
10.5050/KSNVN.2005.15.4.395
5
J., Kim and M., Cho, 2006. An Accurate and Efficient Analysis of Composite Plates Based on Enhanced First-order Shear Deformation Theory. J. Comput. Struct. Eng. Inst. Korea, 19, pp.407-418.
6
J., Kim, J., Han and M., Cho, 2011. On the Modification of a Classical Higher-order Shear Deformation Theory to Improve the Stress Prediction of Laminated Composite Plates. J. Comput. Struct. Eng. Inst. Korea, 24, pp.407-418.
7
J., Lee, 2000. Free Vibration Analysis of Delaminated Composite Beams. Comput. &Struct., 74, pp.21-129.
10.1016/S0045-7949(99)00029-2
8
K., Pingkarawat, C.H., Wang and R.J., Varley, 2012. Self-healing of Delamination Fatigue Cracks in Carbon Fiber-Epoxy Laminate using Mendable Thermoplastic. J. Mater. Sci., 47, pp.4449-4456.
10.1007/s10853-012-6303-8
9
K., Pingkarawat, C.H., Wang and R.J., Varley, 2012. Self-healing of Delamination Cracks in Mendable Expocy Matrix Laminates using Poly[ethylene-co- methacrylic acid] Thermoplastic. Compos. Part A. Appl. Sci. &Manuf., 43, pp.1301-1307.
10.1016/j.compositesa.2012.03.010
10
A.G., Radu and A., Chattopadhyay, 2002. Dynamic Stability Analysis of Composite Plates Including Delaminations using a Higher Order Theory and Transformation Matrix Approach. Int. J. Solids &Struct., 39, pp.1949-1965.
10.1016/S0020-7683(01)00168-8
11
D.A., Saravanos and D.A., Hopkins, 1996. Effects of Delaminations on the Damped Dynamic Characteristics of Composite Laminates: Analysis and Experiments. J. Sound &Vib., 192, pp.977-993.
10.1006/jsvi.1996.0229
12
J.W., Sohn and H.S., Kim, 2013. Dynamic Characteristics Modification of Damaged Composite Structure Using MFC and Active Control Algorithm. Trans. Korean Soc. Noise &Vib. Eng., 23, pp.1066-1072.
10.5050/KSNVE.2013.23.12.1066
13
C., Swann and A., Chattopadhyay, 2006. Optimization of Piezoelectric Sensor Location for Delamination Detection in Composite Laminates. Eng. Optim., 38, pp.511-528.
10.1080/03052150600557841
Information
  • Publisher :Computational Structural Engineering Institute of Korea
  • Publisher(Ko) :한국전산구조공학회
  • Journal Title :Journal of the Computational Structural Engineering Institute of Korea
  • Journal Title(Ko) :한국전산구조공학회 논문집
  • Volume : 28
  • No :1
  • Pages :47-51
  • Revised Date : 2014-06-11
  • Accepted Date : 2014-07-11
  • DOI :https://doi.org/10.7734/COSEIK.2015.28.1.47
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