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Volume 27 Issue 6
Jun.  2001
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Journal of Beijing University of Aeronautics and Astronautics  > 2001  >  27(6): 690-693.
YAN Xiao-jun, . Prediction of the Response of SMA Superelastic Systems Under Stationary Random Excitation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2001, 27(6): 690-693. (in Chinese)
Citation: YAN Xiao-jun, . Prediction of the Response of SMA Superelastic Systems Under Stationary Random Excitation[J]. Journal of Beijing University of Aeronautics and Astronautics, 2001, 27(6): 690-693. (in Chinese)
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Prediction of the Response of SMA Superelastic Systems Under Stationary Random Excitation

  • Beijing University of Aeronautics and Astronautics, Dept. of Propulsion

  • Received Date: 06 Apr 2000
  • Publish Date: 30 Jun 2001
    Abstract
  • With an advantage that the motion equation of the system can be linearized directly in closed form, a simple superelastic model for SMA (Shape Memory Alloy) was proposed in the equivalent linearization method. The method was employed to predict response of SMA superelastic system under stationary white noise excitation. The results are in good agreement with those obtained by numerical simulation in all excitation levels for systems with different damping capacities. It was finally concluded that the equivalent linearization method based on the model can be used in engineering with higher computation efficiency.

     

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  • [1] Liang C, Rogers C A. Design of shape memory alloy coils and their applications in vibration control . Proceeding of Conference on Recent Advances in Active Control of Sound and Vibration . Blacksburg, VA, 1991．177~198． [2] Nie J X, Yan X J. Intelligent bearing system for passing through critical speed of aeroengine rotor by changing stiffness using SMA wires[J]. Materials Science Forum, 2000, 327~328:99~102． [3] Graesser E J, Cozzarelli F A. Shape memory alloys as new materials for aseismic isolation[J]. Journal of Engineering Mechanics, ASCE, 1991,117(11):2590~2608. [4] Wen Y K. Method for random vibration of hysteretic systems[J]. ASCE Journal Engineering Mechanics Div,1976,102(EM2):249~264. [5] Wen Y K. Equivalent linearization for hysteretic systems under random excitation[J]. Transactions of the ASME, Journal of Applied Mechanics, 1980,47:150~154.
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