Active inflatable auxetic honeycomb structural concept for morphing wingtips

نویسندگان

  • Jian Sun
  • Hongliang Gao
  • Fabrizio Scarpa
  • Cristian Lira
  • Yanju Liu
  • Jinsong Leng
چکیده

This paper describes a new concept of an active honeycomb structure for morphing wingtip applications based on tubular inflatable systems and an auxetic cellular structure. A work-energy model to predict the output honeycomb displacement versus input pressure is developed together with a finite element formulation, and the results are compared with the data obtained from a small-scale example of an active honeycomb. An analysis of the hysteresis associated with multiple cyclic loading is also provided, and design considerations for a larger-scale wingtip demonstrator are made.

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تاریخ انتشار 2014