摘要
基于时域谱元法开发了GPU并行算法,并系统研究了各向异性板中S_(0)模态导波的传播特性。将高阶谱单元离散技术与CUDA计算平台相结合实现了并行化计算,建立了复合材料板导波传播的数值模型,精准模拟了导波在复合材料板中的激发与传播过程,进而提取S_(0)模态特征并计算其波速,并据此绘制S_(0)模态波速分布曲线。搭建实验系统,以压电传感器作为激励单元,对T300复合材料板开展S_(0)模态导波传播实验。数值结果表明:通过引入单元级并行计算与“无矩阵化”组装策略,有效提升了模拟效率并显著降低了内存消耗;该方法在保证高精度的同时,大幅优于传统谱元法的计算性能与资源占用。数值模拟结果与实验测量数据高度吻合,能够准确捕捉S_(0)模态的波速曲线,验证了所提并行时域谱元法的准确性和可行性。研究结果为复合材料板健康监测提供了有效的理论基础。
Based on the GPU-parallelized algorithm of the time-domain spectral element method(SEM),this study investigates the S_(0) mode guided waves in anisotropic plates.Parallelization is achieved by integrating high-order spectral element discretization with the CUDA computing platform,thereby establishing a numerical model for guided wave propagation in composite plates.The proposed model accurately simulates the excitation and propagation processes of guided waves in composite plates,extracts the characteristics of the S_(0) mode,calculates its wave velocity,and subsequently plots the distribution curves of S_(0) mode wave velocity.To validate the model,an experimental system was set up using piezoelectric sensors as excitation units to conduct S_(0) mode guided wave propagation tests on T300 composite plates.By incorporating element-level parallel computation and a matrix-free assembly strategy,the proposed method significantly improves computational efficiency and remarkably reduces memory consumption.Numerical verification demonstrates that the method achieves high accuracy while offering superior computational performance and resource efficiency compared with traditional SEM.The simulation results show excellent agreement with the experimental measurements and accurately capture the wave-velocity curve of the S_(0) mode,thereby verifying the accuracy and feasibility of the proposed parallel time-domain spectral element method.This study offers an effective technical route for the simulation of guided wave propagation in composite plates and demonstrates broad prospects for application in the field of health monitoring of composite plates.
作者
陈金龙
郑明方
宋彬磊
马宏伟
卢超
李楠
郑阳
CHEN Jinlong;ZHENG Mingfang;SONG Binlei;MA Hongwei;LU Chao;LI Nan;ZHENG Yang(School of Environment and Civil Engineering,Dongguan University of Technology,Dongguan 523808,Guangdong,China;School of Instrument Science and Optoelectronics Engineering,Nanchang Hangkong University,Nanchang 330000,Jiangxi,China;International Aerospace Institute,Dongguan University of Technology,Dongguan 523808,Guangdong,China;Shenzhen Research Institute of Northwestern Polytechnical University,Shenzhen 518057,Guangdong,China;China Special Equipment Inspection and Research Institute,Beijing 100029,China;Guangdong Key Laboratory of Intelligent Disaster Prevention and Emergency Technology of Urban Lifeline Engineering,Dongguan 523808,Guangdong,China)
出处
《陕西师范大学学报(自然科学版)》
北大核心
2026年第2期53-62,共10页
Journal of Shaanxi Normal University:Natural Science Edition
基金
广东省基础与应用基础研究基金(2023B1515120080,2021B1515120090)
国家自然科学基金(51905099)
广东省普通高校重点科研平台和项目高端装备制造重点领域专项项目(2022ZDX3032)。
关键词
时域谱元法
复合材料板
超声导波
波速曲线
并行计算
S_(0)模态
time-domain spectral element method
composite plates
ultrasonic guided waves
wave velocity curves
parallel computing
S_(0)mode
