Affiliation:
1. School of Mechanical Engineering, Northwestern Polytechnical University, Xi’an 710072, China
2. First Aircraft Design Institute of AVIC, Xi’an 710089, China
Abstract
This study investigates and designs a novel stacked hinge with low stiffness, large rotation angle, high strength, and length-adaptive functionality. Firstly, based on the large deformation theory of cantilever beams and relevant theories of leaf springs, a stiffness theoretical model for stacked flexure hinges is established. Subsequently, the stiffness theoretical model is further modified by considering the frictional force, aiming to reduce errors. Secondly, a stiffness-testing experimental platform for this flexure hinge is designed to verify the correctness of the theoretical model. Finally, the stacked flexure hinge is applied to the trailing-edge mechanism of a variable camber wing, achieving a deformation target of 15° downward bending of the wing and demonstrating good shape retention, thereby proving the feasibility of the application.
Funder
National Natural Science Foundation of China
Reference27 articles.
1. Analysis of the displacement amplification ratio of bridge-type flexure hinge;Ma;Sens. Actuators A Phys,2006
2. Development of a novel flexure-based microgripper for high precision micro-object manipulation;Zubir;Sens. Actuators A Phys.,2009
3. Design, fabrication and testing of a serial kinematic MEMS XY stage for multifinger manipulation;Kim;J. Micromech. Microeng.,2012
4. Henein, S., Spanoudakis, P., Droz, S., Myklebust, L.I., and Onillon, E. (2003, January 25). Flexure pivot for aerospace mechanisms. Proceedings of the 10th European Space Mechanisms and Tribology Symposium, Technological Park, San Sebastián, Spain.
5. Meyer, P., Boblenz, J., Sennewald, C., Vorhof, M., Hühne, C., Cherif, C., and Sinapius, M. (2019). Development and Testing of Woven FRP Flexure Hinges for Pressure-Actuated Cellular Structures with Regard to Morphing Wing Applications. Aerospace, 6.