A NEW CONCEPT OF SHAPE ADAPTIVE STRUCTURES WITH NPR USING COMPLIANT MECHANISMS AND SMA ACTUATORS
Smart morphing aircraft structures are currently a focus of considerable research. Efforts are being made to achieve adaptive structures which can change their shape actively under different flight conditions such as take off, cruise, dash, and loiter. This work illustrates the design of a novel concept of shape adaptive structures with negative Poissons ratio (NPR) using compliant honeycomb structures and SMA actuators. The honeycomb is manufactured using the re-entrant cell with negative Poissons ratio and the tendon actuators made of shape memory alloy (SMA) springs. By controlling the temperature of the SMA actuators, the outer shape of adaptive structures will be changed smoothly. The particular nature of these deformed configurations suggests the application of the innovative adaptive munitions, such as aircraft, missile or bullet. The mechanical characteristics of negative Poissons ration honeycomb structures with SMA actuators are here investigated through a numerical model and prior experimental investigations.
Morphing aircraft Adaptive Structures Negative Poissons Ratio Honeycomb Structures CompliantMechanisms Shape Memory Alloy
Erbao Dong Yonghua Zhang Rui Zhu Jie Yang
Department of Precision Machinery & Precision Instrumentation, University of Science & Technology of China, Hefei 230026, China
国际会议
南京
英文
163-169
2006-09-24（万方平台首次上网日期，不代表论文的发表时间）