کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
252483 502966 2011 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Free vibration of buckled SMA reinforced composite laminates
موضوعات مرتبط
مهندسی و علوم پایه سایر رشته های مهندسی مهندسی عمران و سازه
پیش نمایش صفحه اول مقاله
Free vibration of buckled SMA reinforced composite laminates
چکیده انگلیسی

The effect of shape memory alloys (SMA) on the free vibration behavior of buckled cross-ply and angle-ply laminates by varying the SMA fiber spacing was investigated using the finite element method. The formulation of the location-dependent linear, nonlinear stiffness and mass matrices due to non-homogeneous material properties and the temperature-dependent recovery stress stiffness matrix were derived. Numerical results show that the increase of SMA fiber volume fraction and prestrain may generate more recovery stress, and increase the stiffness of SMA reinforced composite laminates. Therefore, the postbuckling deflections of the plate will be decreased considerably and the natural frequencies of the plate may be modified significantly. The buckling mode and fundamental natural mode are dependent on the graphite fiber orientation of the SMA reinforced angle-ply laminates. The relationship between the buckling mode and fundamental natural mode is clearly displayed and studied in detail.


► The natural frequencies of plate may be modified significantly by the use of SMA.
► Frequencies are more efficiently modified by increasing SMA in the center of plate.
► The relationship between the buckling mode and vibration mode is clearly displayed.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Composite Structures - Volume 93, Issue 11, October 2011, Pages 2678–2684
نویسندگان
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