Dynamic Response Analysis of Double-cell Composite Beam with SMA Based on ANSYS
Shape memory alloy(SMA)layers were bonded to a double-cell glass/carbon fiber hybrid composite beam,and the vibration of the composite beam was controlled passively by the superelastic effect of SMA.The dynamic analysis of the cantilever composite beam was carried out by using the finite element software ANSYS.The displacement response of the free end of the beam under the impulse load and the harmonic pressure on the upper surface was studied respectively.The vibration suppression effect of SMA on the beam was ana-lyzed.The effects of the position,length and thickness of SMA on the vibration suppression of the composite beam were discussed.The results show that the vibration of the double-cell composite beam is suppressed to a certain extent due to the superelastic energy-dissipation chanacteristics of SMA.Moreover,SMA layers laid on the upper and lower surfaces of the beam have better vibration reduction effect than they were laid on the left and right webs.In addition,the vibration suppression effect of SMA layers with one quanter of the length of the beam is equivalent to and even better than that of SMA layers with whole length of the beam when they were pasted on the upper and lower surfaces of the beam.The thickness of SMA layers is larger,the vibration suppression effect of SMA is better when the composite beam is subjected to impulse load.
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