[ICACE2019] Experimental free vibration analyses of scaled open-hole epoxy copper composite structures
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There are different causes for failure and cracks in composite materials, such as vibrations. The behavior of a composite structure is based on its mechanical and physical properties. Modern composite materials are usually optimized to get special mechanical properties used in different applications, such as airplanes. In the present study, we investigated the free vibration behavior of copper composite plates with holes. The damping ratio and natural frequency for different samples manufactured from fiber and copper were analyzed. The holes on the sample plate were of different diameters (2, 4, 6, 8, 10, and 12 mm), and the width to diameter ratio was fixed at 6. Vibration modal analysis tests were conducted to evaluate the effect of hole size. The results showed that the natural frequency increased with an increase of the hole size in the low frequency mode under 300 Hz; however, frequency was not related to hole size over 500 Hz. Damping ratio was found to be affected by the hole size; the appropriate hole size was 2 mm in the low frequency mode and 8 mm in the high frequency mode in order to get high damping ratio.
Abstract
There are different causes for failure and cracks in composite materials, such as vibrations. The behavior of a composite structure is based on its mechanical and physical properties. Modern composite materials are usually optimized to get special mechanical properties used in different applications, such as airplanes. In the present study, we investigated the free vibration behavior of copper composite plates with holes. The damping ratio and natural frequency for different samples manufactured from fiber and copper were analyzed. The holes on the sample plate were of different diameters (2, 4, 6, 8, 10, and 12 mm), and the width to diameter ratio was fixed at 6. Vibration modal analysis tests were conducted to evaluate the effect of hole size. The results showed that the natural frequency increased with an increase of the hole size in the low frequency mode under 300 Hz; however, frequency was not related to hole size over 500 Hz. Damping ratio was found to be affected by the hole size; the appropriate hole size was 2 mm in the low frequency mode and 8 mm in the high frequency mode in order to get high damping ratio.
참고문헌 (20)
- M. Fazeli, "Improvement in adhesion of cellulose fibers to the thermoplastic starch matrix by plasma treatment modification", Composites Part B : Engineering, 163, pp.207~216 (2019)
- B. N. Singh, "A C0element for free vibration of composite plates with uncertain material properties", Advanced Composite Materials, 11(4), pp.331~350 (2012)
- Free Vibration Analysis of Laminated Composite Plates with Cut out Using Finite Element Method, "S. K. Dey", Civil Engineering in Structural Engineering, ~ (2012)
- "Vibralign"[URL]
- "Mide:Enginerring Solution"[URL]
- R. Lassoued, "Accurate calculation of free frequencies of beams & rectangular plates", World Academy of Science Engineering. & Technology, 10 (2007)
- S. U. Ratnaparkhi, "Vibration analysis of composite plate", International Journal of Modern Engineering Research(IJMER), 3(1), pp.377~380 (2013)
- D. Kim, "Study on the drilling of composite and titanium stacks", Composite structure, 54(1), pp.67~77 (2001)
- V. V. Sridhara Raju, "Effect of thickness ratio on nonlinear static behaviour of skew bidirectional FRP laminates with circular cutout", International Journal of Applied Engineering Research, Dindigul, 1(4), pp.923~932 (2001)
- P. P. Camanho, "Size effects on the strength of notched composites", 16th International Conference on Composite Materials (2007)
- O. Cahuk, "New vibration system for advanced drilling composite-metallic stacks", SAE International Journal of Materials and Mnufacturing, 7(1), pp.23~32 (2014)
- M. Al-Waily, "Experimental and numerical vibration study of woven reinforcement composite laminated plate with delamination effect", International Journal of Mechanical Engineering(IJME), IASET, 2(5), pp.1~18 (2013)
- H. Chawla, "Dynamic characteristics of FRP laminates with cutouts", International Journal of Applied Engineering Research, 7(2) (2012)
- H. Al Qablan, "Assessment of the buckling behavior of square composite plates with circular cut-out subjected to in-plane shear", Jordan Journal of Civil Engineering, 3(2), pp.184~195 (2009)
- W. Roundi, "Experimental and numerical investigation of the effects of stacking sequence and stress ratio on fatigue damage of glass", epoxy composites, 2017, pp.109, 64~71
- L. A. D’Amore, "Phenomenological approach to the study of hierarchical damage mechanisms in composite materials subjected to fatigue loadings", Composite Structure, 175, pp.1~6 (2017)
- D. R. Prasad, "Study on dynamic characteristics of structural materials using modal analysis", Asian Journal of Civil Engineering, 9(2), pp.141~152 (2008)
- S. Abrate, "Equivalent single layer theories for composite and sandwich structures, A review", Composite Structures, 179, pp.482~494 (2017)
- B. Aidi, "Experimental, numerical, and analytical free vibration analyses of open-hole composite plates", 57th AIAA, AHS, pp.ASC Structures, Structural Dynamics, and Materials Conference, 2016
- C. Soutis, "Compressive failure of notched carbon fiber composites", Proceedings of the Royal Society London A, 440(1909), pp.241~256 (1993)