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12 June 2000 Analysis and control of large thermal deflection of composite plates using shape memory alloy
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A finite element method for predicting critical temperature and postbuckling deflection is presented for composite plates embedded with prestrained shape memory alloy (SMA) wires and subjected to high temperatures. The temperature- dependent material properties of SMA and matrix, and the geometrical non linearities of large deflection are considered in the formulation. An incremental method consisting of small temperature increments and including the effect of initial deflection and initial stresses for materials non linearities is presented. Within each temperature increment, the Newton-Raphson iteration method is used for calculating large thermal deflection. Results show that the critical buckling temperature can be raised high enough and the postbuckling deflection can be reduced and controlled for a given operating temperature range by the proper selection of SMA volume fraction, prestrain and alloy composition.
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Bin Duan, Mohammad Tawfik, Sylvain N. Goek, Jeng-Jong Ro, and Chuh Mei "Analysis and control of large thermal deflection of composite plates using shape memory alloy", Proc. SPIE 3991, Smart Structures and Materials 2000: Industrial and Commercial Applications of Smart Structures Technologies, (12 June 2000);

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