图 文 导 读

该文亮点：

Highlights:

Abstract: With the increase in car ownership, traffic noise pollution has increased considerably and is one of the most severe types of noise pollution that affects living standards. Noise reduction by sound barriers is a common protective measure used in this country and abroad. The acoustic performance of a sound barrier is highly dependent on its shape and material. In this paper, a semianalytical meshless Burton–Miller-type singular boundary method is proposed to analyze the acoustic performance of various shapes of sound barriers, and the distribution of sound-absorbing materials on the surface of sound barriers is optimized by combining a solid isotropic material with a penalization method. The acoustic effect of the sound-absorbing material is simplified as the acoustical impedance boundary condition. The objective of optimization is to minimize the sound pressure in a given reference plane. The volume of the sound-absorbing material is used as a constraint. The density of the nodes covered with the sound-absorbing material is used as the design variable. The method of moving asymptotes was used to update the design variables. This model completely avoids the mesh discretization process in the finite element method and requires only boundary nodes. In addition, the approach also does not require the singular integral calculation in the boundary element method. The method is illustrated and validated using numerical examples to demonstrate its accuracy and efficiency.

Keywords: sound barrier, acoustic analysis, material distribution optimization, semianalytical meshless method

DOI: 10.1002/msd2.12087

Share this article:

https://onlinelibrary.wiley.com/doi/10.1002/msd2.12087（点击链接直达原文）

Cite this article: Liu H, Wang F, Zhang C. Performance analysis and material distribution optimization for sound barriers using a semianalytical meshless method. Int J Mech Syst Dyn. 2023, 3(4). doi:10.1002/msd2.12087

ResearchGate: （点击绿色图标  浏览IJMSD的ResearchGate主页）

作 者 简 介

刘汉卿 青岛大学机电工程学院硕士研究生，主要从事计算力学、振动与噪声控制方面的研究。

王发杰 青岛大学机电工程学院副教授，硕士生导师，担任青岛市力学学会监事长。主要从事计算力学、工程仿真、高性能计算软件平台开发等方面的研究工作，涉及领域包括复杂介质传热传质、振动噪声控制、断裂力学分析等。近年来发表学术论文80余篇（其中第一/通讯作者50余篇），多篇论文入选ESI高被引论文，论文总被引1500余次（Google scholar），H指数24，i10指数为45。主持国家基金1项、省部级项目3项、企业横向课题4项，获德国DAAD-K.C.Wong Fellowships，获批计算机软件著作权4项，授权专利5项。

张传增 德国锡根大学土木工程系结构力学教席C4教授，欧洲科学院院士，欧洲科学与艺术院院士，欧洲人文与自然科学院院士，斯洛伐克工业大学名誉博士，亚里士多德塞萨洛尼基大学名誉博士。主要从事的科研领域包括智能材料与结构力学、多功能梯度材料与结构力学、声学与弹性超材料力学、弹性动力学、断裂动力学、计算力学等。任3家国际期刊副主编，十余家国际期刊编委，在学术期刊和专业会议论文集发表学术论文850余篇，近五年来应邀做学术报告50余次，参与组织30多个国际学术会议，并先后为近60余种国际权威学术期刊评审稿件。截至2023年11月4日，其学术论文的Google Scholar引用量为19085次，H指数为68，i10指数为379。