水下无人系统学报2026，Vol.34Issue(2)：299-307,9.DOI:10.11993/j.issn.2096-3920.2026-0024
力学可重构负刚度超结构的可调控水下声隐身性能
Tunable Underwater Acoustic Stealth Performance of Mechanically Reconfigurable Negative Stiffness Meta-structures
摘要
Abstract
To address the urgent need for vibration and noise control and the enhancement of acoustic stealth performance of underwater equipment,a new approach was explored to achieve active regulation of the acoustic stealth performance of underwater functional structures using mechanically reconfigurable negative stiffness metamaterials.In this paper,two negative stiffness metamaterial unit cells with variations in band structure before and after mechanical reconfiguration were optimally designed.The evolutionary band characteristics during the deformation process of the unit cells were systematically analyzed.Homogeneous and graded plate/beam sandwich meta-structures with negative stiffness were constructed.Based on the structural-acoustic coupled finite element method,the underwater radiation noise's spectral characteristics of negative stiffness meta-structures under different combined configurations and preloading conditions were analyzed.The results show that the mechanical reconfigurability of negative stiffness metamaterials enables flexible tuning of wave propagation performance in meta-structures,while gradient sequences can broaden the sound insulation frequency band.This study provides theoretical and design references for developing lightweight underwater acoustic stealth and acoustic camouflage functional structures.关键词
水下声隐身/负刚度超材料/力学可重构/能带结构/带隙特性Key words
underwater acoustic stealth/negative stiffness metamaterial/mechanical reconfigurability/band structure/bandgap property分类
军事科技引用本文复制引用
龚骁坤,李清,杨德庆,王迎光..力学可重构负刚度超结构的可调控水下声隐身性能[J].水下无人系统学报,2026,34(2):299-307,9.基金项目
国家自然科学基金项目(52201371) （52201371）
重庆市自然科学基金项目(CSTB2024NSCQ-MSX1216). （CSTB2024NSCQ-MSX1216）
