噪声与振动控制2025，Vol.45Issue(2)：139-144,249,7.DOI:10.3969/j.issn.1006-1355.2025.02.022
高速列车内地板隔声性能优化研究
Optimization of Floor Sound Insulation Performance of High-speed Trains
摘要
Abstract
To reduce the noise level in the high-speed trains,the carbon fiber sandwich panel was optimized based on the transfer matrix acoustic model.Firstly,the Sobol sensitivity method was used to research the effects of plate thickness,material density,Young's modulus and Poisson's ratio on the sound insulation of the sandwich panels.The sensitivity analy-sis showed that thickness has the greatest influence on sound transmission loss.Then,taking the thickness of each layer of the sandwich panel as the optimization variable,sound transmission loss and areal density as the optimization goal,the non-dominated sorting genetic algorithm(NSGA-Ⅱ.)was used to carry out the double-objective optimization of the sandwich panel.The Pareto solution set showed that the balance state of mass and acoustic performance is the best when the sandwich panel thickness is 1.5,61 or 2.5 mm,respectively.Finally,a sound-solid interaction model was established,acoustic simula-tion and experimental tests were carried out on the optimized structure,and the floor sound insulation data in high-speed trains were compared.The results show that the prediction accuracy of the transfer matrix and the acoustic-solid interaction model meets the engineering requirements.Compared to the floor inside the high-speed train,the weighted sound insulation of carbon fiber sandwich panels is increased by 15.6 dB(A),and the mass per unit area is reduced by 3 kg.关键词
声学/碳纤维层合板/隔声量/传递矩阵/灵敏度/非支配排序遗传算法Key words
acoustics/carbon fiber laminate/sound insulation/transfer matrix/sensitivity/NSGA-Ⅱ分类
交通工程引用本文复制引用
吴鑫,张艳斌,曹江萍,卢耀辉..高速列车内地板隔声性能优化研究[J].噪声与振动控制,2025,45(2):139-144,249,7.基金项目
国家自然科学基金资助项目(51275428) （51275428）
四川省科技厅重点研发计划项目(22ZDYF3050) （22ZDYF3050）
