航空学报2025，Vol.46Issue(21)：131-142,12.DOI:10.7527/S1000-6893.2025.32366
空天多层异构结构压电导波传播特性仿真
Simulation of piezoelectric guided wave propagation characteristics in multilayer heterogeneous structures for aerospace vehicles
摘要
Abstract
To address the urgent demand for active guided wave damage monitoring of multilayer heterogeneous structures of aerospace vehicles under complex service conditions,we conduct a simulation study on piezoelectric guided waves in multilayer heterogeneous structures.By establishing a high-precision simulation model of multi-physics field coupling,the propagation characteristics and attenuation laws of guided waves in multilayer heteroge-neous structures are revealed,which provides a design basis for the implementation of guided wave monitoring meth-ods.Firstly,a multi-physics field coupling finite element model considering material attenuation characteristics is estab-lished,and the attenuation effect of viscoelastic layers on guided waves is simulated by Rayleigh damping.Secondly,the meshing strategy of multilayer heterogeneous structures is optimized to balance the calculation accuracy and effi-ciency.Experimental verification shows that the proposed method accurately simulates the attenuation behavior and propagation phase of guided waves,significantly improving the simulation accuracy.After introducing the damping model,the amplitude attenuation errors of S0 and A0 modes in the structure are reduced from 122.3%and 78.1%to 3.4%and 3.6%respectively;the mesh optimization reduces the element degrees of freedom by 66.6%while keeping the phase error within 0.6%.This research provides a high-precision simulation method and theoretical basis for dam-age monitoring of aerospace multilayer heterogeneous structures,which has important engineering value for ensuring the safe service of aerospace vehicles.关键词
空天多层异构结构/压电导波/有限元仿真/阻尼模型/传播特性Key words
multilayer heterogeneous structures of aerospace vehicles/piezoelectric guided wave/finite element simulation/damping model/dispersion characteristics分类
航空航天引用本文复制引用
沈君贤,杨雅惠,袁慎芳..空天多层异构结构压电导波传播特性仿真[J].航空学报,2025,46(21):131-142,12.基金项目
国家自然科学基金面上项目(52275153) （52275153）
江苏省前沿技术研发计划(BF2024068) （BF2024068）
航空航天结构力学及控制全国重点实验室自主研究课题(南京航空航天大学)(MCAS-I-0423G01,MCAS-I-0424G01) （南京航空航天大学）
南京航空航天大学前瞻布局科研专项资金 National Natural Science Foundation of China(52275153) （52275153）
Frontier Technologies Research and Development Program of Jiangsu(BF2024068) （BF2024068）
Research Fund of State Key Laboratory of Mechanics and Control for Aerospace Structures(Nanjing University of Aeronautics and Astronautics)(MCAS-I-0423G01,MCAS-I-0424G01) （Nanjing University of Aeronautics and Astronautics）
The Fund of Prospective Layout of Scientific Research for Nanjing University of Aeronautics and Astronautics （）
