This study presents a fabrication method, bench top test results, and numerical model validation for a novel adaptive jet engine chevron concept based upon embedding shape memory alloy (SMA) actuators in a composite laminate, termed a SMA hybrid composite (SMAHC). The approach for fabricating the adaptive SMAHC chevrons involves embedding prestrained Nitinol actuators on one side of the mid-plane of the composite laminate such that thermal excitation generates a thermal moment and deflects the structure. A rigorous and versatile test system for control and measurement of the chevron deflection performance is described. A recently commercialized constitutive model for SMA and SMAHC materials is used in the finite element code ABAQUS to perform nonlinear static analysis of the chevron specimens. Excellent agreement is achieved between the predicted and measured chevron deflection performance, thereby validating the numerical model and enabling detailed design of chevron prototype(s) and similar structures.
Modeling, fabrication, and testing of a SMA hybrid composite jet engine chevron concept
Journal of Intelligent Material Systems and Structures ; 17 , 6 ; 483-497
2006
15 Seiten, 21 Quellen
Aufsatz (Zeitschrift)
Englisch
Engineering Index Backfile | 1949
Development of a Preliminary Model-Scale Adaptive Jet Engine Chevron
Online Contents | 2008
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Tema Archiv | 2008
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