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Flutter of sandwich honeycomb conical shell is considered. The conical shell is manufactured by additive technology. The shell is streamed by the supersonic gas flow, which are described by piston theory. The geometrical nonlinear deformation of thin-walled structure is accounted, which results in existing of self-sustained vibrations. Assumed-mode method is used to derive the finite-degrees-of-freedom nonlinear dynamical system. This system is analyzed numerically. Quasi periodic and chaotic motions are analyzed numerically in conical sandwich shell.

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Self-sustained Vibrations of Conical Sandwich Shell Interacting with Supersonic Gas Stream

  • 会议论文

  • 发表日期：

    2025年

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  • Konstantin Avramov,
  • Boris Uspensky,
  • Maryna Chernobryvko,
  • A. Salenko

摘要

Flutter of sandwich honeycomb conical shell is considered. The conical shell is manufactured by additive technology. The shell is streamed by the supersonic gas flow, which are described by piston theory. The geometrical nonlinear deformation of thin-walled structure is accounted, which results in existing of self-sustained vibrations. Assumed-mode method is used to derive the finite-degrees-of-freedom nonlinear dynamical system. This system is analyzed numerically. Quasi periodic and chaotic motions are analyzed numerically in conical sandwich shell.