Double-Double Layup Composite Tail with Embedded Nitinol Meshes for Variable-Temperature Broadband Vibration Control

A composite laminated tail structure, specifically a vertical stabilizer (composite laminated vertical stabilizer, CLVS), employing a double-double layup with in situ mesh embedding of Nitinol element wires, was developed for broadband vibration control. Finite-element and Rayleigh–Ritz modal analyses, coupled with the Galerkin truncation and harmonic balance method (GTM-HBM) and hammer-impact tests, accurately predicted and validated natural frequencies, mode shapes, and the nonlinear dynamic response of the tail stabilizer. Broadband sweep tests in the aviation temperature range show 20–50% vibration reduction from 40 to 400 Hz, with damping retained at high temperature. A one-step molding process embeds Nitinol wires and ropes directly into the composite layup, eliminating secondary bonding and stress concentrations while enhancing stabilizer integrity. This integrated workflow, from ply and mesh design to dynamic modeling and experimental validation, provides a rapid design tool for multifunctional composite structures in electric aircraft under complex mechanical and thermal loads. This approach can be applied to broadband variable-temperature vibration control in composite structures of electric aircraft, paving new pathways for the development of multifunctional aviation structures.