Effects Of SMA Wires Free Vibration Of Shape Memory Sandwich Panel

Document Type : Research Article

Authors

Abstract

Shape memory alloys(SMA) due to the exhibition of certain performance such as high damping, shape memory effects and Super-elasticity are consider for application in engineering systems.
In this study, considering the usage of composite-sandwich structures in various industries including aerospace, the effects of SMA parameters such as SMA volume fraction and SMA wires temperature on hybrid sandwich panel free vibrations with transverse flexible core have been surveyed. The SMA wires (NiTiNol) are embedded at the mid-plane of the sandwich face sheets. For analyze, the improved high order theory is applied, First Shear Deformation Theory (FSDT) at the composite face sheets and Elasticity Theory by the assumption of inertia forces at the core. For governing equations of simply support panel Hamiltonian method has been used. At this study it is assumed that the SMA recovery stress produced via temperature actuation is exerted tensely on mid-plane of the face sheets. For solving problem and simplification the Galerkine method is used. The results showed that SMA actuation improves the vibration behaviors of whole sandwich panel.

Keywords


[1] John, S.; Hariri, M.; "Effect of shape memory alloy actuation on the dynamic response of polymeric composite plates", Composites, applied science and manufacturing:Part A, vol. 39, p.p.769–776, 2008.
[2] Jae-Sang, B.; Park, S.; Hwan, k.; “Vibration of thermally post-buckled composite plates embedded with shape memory alloy fibers”, Composite structures,vol. 63, p.p. 179-188, 2004.
[3] Ostachowicz, W.; Krawczuk, M.; Zak, A.; “Dynamics and Buckling of a multilayer composite plate with embedded SMA wires”, Composite Structures, vol. 48, p.p. 163-167, 2008.
[4] Malekzadeh, K.; Kalili, M.R.; Olsson, R.; Jafari, A.; “High-order dynamic response of composite sandwich panels with flexible core under simultaneous low – velocity impact”, International Journal of Solids and Structures, vol. 43, p.p. 6667-6687, 2006.
[5] Shih-Yao, K.; Le-chang, S.; Ke-han, C.; “Buckling analysis of shape memory reinforced composite laminates”, Composite structures, vol. 90, p.p. 188-195, 2009.
[6] . Kalili, M.R.; Shokuhfar, A.; Malekzadeh, K.; Ghasemi, F.; “Low-velocity impact response of active thin-walled hybrid composite structures embedded with SMA wires”, Thin-Walled Structures, vol. 45, p.p. 799-808, 2007.
[7] Ibrahim, H.H.; HeeYoo,H.; SooLee, K.; “Aero-thermo-mechanical characteristics of imperfect shape memory alloy hybrid composite panels”, Journal of Soundand Vibration, p.p. 230-237, 2010.
[8] ملک زاده، کرامت؛ مظفری، علی؛ احمدی، مجتبی؛ " تاثیر الیاف حافظهدار در فرکانسهای طبیعی و شکل مودهای یک ورق کامپوزیت مرکب هوشمند با تکیه گاه مفصلی " ، هفتمین همایش سالانه )بینالمللی( انجمن هوا فضای ایران، صنعتی شریف، 30 بهمن 2 اسفند 1386
[9] Reddy, J.N.; “ Energy principles and variational methods in applied Mechanics”, Department of Mechanical Engineering of Texas, A&M University, 2002.
[10] Rogers, C.A.; Liang, C.; Jia, J.; “Structural modification of simply-supported laminated plates using embedded shape memory alloy fibers”, Composite Structures, Vol. 38, p.p. 569-580, 1999.
[11] آذرنیا، امیرحسین." ارتعاشات آزاد پانل ساندویچی کامپوزیتی با هسته انعطاف پذیر"، پایان نامه کارشناسی  ارشد هوافضا، دانشگاه خواجه نصیر، تهران، 1386