Free vibration of buckled SMA reinforced composite laminates

► 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. The effect of shape memory alloys (SMA) on t...

Full description

Saved in:
Bibliographic Details
Published in:Composite structures 2011-10, Vol.93 (11), p.2678-2684
Main Authors: Shiau, Le-Chung, Kuo, Shih-Yao, Chang, Shu-Yu
Format: Article
Language:English
Subjects:
Applied sciences
Buckling
Composite laminate
Composites
Exact sciences and technology
Forms of application and semi-finished materials
Free vibration
Fundamental areas of phenomenology (including applications)
Laminates
Mathematical analysis
Physics
Polymer industry, paints, wood
Recovery
Shape memory alloy
Shape memory alloys
Solid mechanics
Static elasticity (thermoelasticity...)
Stiffness
Stresses
Structural and continuum mechanics
Technology of polymers
Vibration, mechanical wave, dynamic stability (aeroelasticity, vibration control...)
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:► 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. 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.
ISSN:0263-8223
1879-1085
DOI:10.1016/j.compstruct.2011.06.008