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期刊论文 13

年份

2023 1

2022 2

2021 1

2018 1

2017 2

2014 1

2010 2

2008 1

2007 1

2001 1

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关键词

FE-SEA混合法 1

动力与传动装置;振动声辐射;低噪声推进;振动控制 1

可移动音罩 1

可调混响装置 1

吸声/隔声 1

噪声控制 1

声学成像 1

声学超构材料 1

工程应用 1

搅拌头旋转速度 1

搅拌摩擦焊 1

水下声学传感器网络;声学定位;声速剖面;到达时间差(TDOA);到达频率差(FDOA) 1

混响箱 1

焊接速度 1

矢量水听器;浅海;低频;位置估计;循环神经网络 1

矩形封闭声腔 1

耦合 1

观众厅 1

视线设计 1

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From dBA to soundscape indices: Managing our sound environment

Jian KANG

《工程管理前沿(英文)》 2017年 第4卷 第2期   页码 184-192 doi: 10.15302/J-FEM-2017026

摘要: While in the EU alone 80 million citizens are suffering from excessive environmental noise, the conventional approach, i.e., reduction of ‘sound level’, does not always deliver the required improvements in quality of life. The growing field of ‘soundscape studies’ is addressing this gap by considering the sound environment as perceived, in context, with an interdisciplinary approach. However, soundscapes are hugely complex, and measuring them as a basis for environmental design requires a step change to the discipline. This paper explores the need for developing ‘soundscape indices’, in the movement from noise control to soundscape creation, adequately reflecting levels of human comfort, the impact of which will be reminiscent of that of the Decibel scale created by Bell Systems a century ago. By analysing the soundscape design of urban open public spaces, the coherent steps for achieving this are also discussed, including characterising soundscapes by capturing soundscapes and establishing a comprehensive database; determining key factors and their influence on soundscape quality based on the database; developing, testing and validating soundscape indices; and demonstrating the applicability of the soundscape indices in the management of our sound environment.

关键词: noise     soundscape     management     sound     environment     soundscape index    

From understanding to designing soundscapes

Jian KANG

《结构与土木工程前沿(英文)》 2010年 第4卷 第4期   页码 403-417 doi: 10.1007/s11709-010-0091-5

摘要: Soundscape represents a step change in the field of environmental acoustics in that it combines physical, social, and psychological approaches. Although the term soundscape was introduced in the 1960s, significant attention to it has mainly been paid in the last decade or so in the community of environmental acoustics by researchers and recently by practitioners including policy makers. This paper explores the current situation and future challenges in soundscape. Starting with a framework on research and practical needs in soundscape and a brief introduction of some recent/current networks, activities, projects, and publications, this paper then presents a systematic review of recent progress in soundscape research and practice. A short review of the soundscape research in China is also given.

关键词: soundscape     environment     sound     design     urban     landscape    

两封闭弹性长方体连接结构的声辐射建模与分析

姚昊萍,张建润,陈南,孙庆鸿

《中国工程科学》 2007年 第9卷 第3期   页码 41-46

摘要:

利用汉密尔顿函数和瑞利-李兹方法,建立了分别由1块四边弹性支承的弹性板及5块刚性板构成 的两连接封闭矩形腔外的辐射声场模型,推导了腔体外辐射声场的解析解。模型在两个弹性长方体结构的连接 处施加假想的弹簧系统模拟不同连接条件,同时考虑了两弹性结构连接点之间以及弹性板与腔体内声场之间的 耦合。通过算例表明,间接力通过连接结构对弹性板辐射声场的影响明显小于弹性板在同样直接力作用下的辐 射声场;弹性结构连接点处线弹簧的刚度变化对辐射声场的影响较旋转弹簧大。

关键词: 辐射声场     连接     矩形封闭声腔     耦合    

Noise control technology for generator sets in enclosures

ZHANG Nailong, YANG Wentong, FEI Renyuan

《机械工程前沿(英文)》 2008年 第3卷 第4期   页码 377-384 doi: 10.1007/s11465-008-0051-0

摘要: Currently, noise pollution is an environmental problem all over the world. The health and life of human beings are affected by loud noise from high power generator sets. To reduce such noise, a sound-attenuated enclosure is widely used for its high performance and convenient usage. By installing equipment in an enclosure, noise is controlled and prevented from radiating. In this paper, noise control techniques for enclosures are presented. Enclosure development trends are predicted.

关键词: equipment     generator     sound-attenuated enclosure     convenient     Enclosure development    

基于到达时间差和到达频率差的多层等梯度声速剖面建模与声学定位 Research Article

詹东洲1,王思甜1,蔡守桂1,郑华荣2,徐文2

《信息与电子工程前沿(英文)》 2023年 第24卷 第1期   页码 164-175 doi: 10.1631/FITEE.2100398

摘要: 为实现水下声学传感网络中的高精度节点定位,本文首先使用线性分割近似方法,提出多层等梯度声速剖面(sound speed profile,SSP)模型。基于此模型,可将声线跟踪问题转化为多项式寻根问题。

关键词: 水下声学传感器网络;声学定位;声速剖面;到达时间差(TDOA);到达频率差(FDOA)    

3D finite element analysis of composite noise barrier constructed of polyurethane products

Ben DAEE,Hesham El NAGGAR

《结构与土木工程前沿(英文)》 2017年 第11卷 第1期   页码 100-110 doi: 10.1007/s11709-016-0364-8

摘要: This paper presents a numerical investigation on the structural performance of an innovative noise barrier consisting of poly-block, rigid polyurethane foam (RPF) and polyurea. The mechanical characteristics of RPF as well as the flexural resistance of the proposed wall system (poly-wall) were established and presented in another study. The experimental results are used in the current study to develop, calibrate and verify 3D finite element (FE) models of the wall system. The components of the poly-wall including steel rebars, poly-blocks and RPF cores were simulated and then verified using the results of experiments conducted on the wall components. The results of numerical analysis exhibited a satisfactory agreement with the experimental outcomes for the entire wall system. The verified numerical models were then used to conduct a parametric study on the performance of poly-wall models under uniform wind load and gravity load. The findings of the current study confirmed that the structural performance of poly-wall is satisfactory for noise barrier application. Simulation techniques for improvement of the numerical analysis of multi-martial 3D FE models were discussed.

关键词: 3D finite element     sound wall     rigid polyurethane foam     poly-wall     numerical model     calibration    

未来工程中的声学超构材料 Perspective

鲁强兵, 李鑫, 张秀娟, 卢明辉, 陈延峰

《工程(英文)》 2022年 第17卷 第10期   页码 22-30 doi: 10.1016/j.eng.2022.04.020

摘要:

声学超构材料(acoustic metamaterials, AMMs)是一种人工结构材料,可以表现出自然材料所没有的奇异特性,如负的等效体积模量、负的等效质量密度和负的折射率等。这些有趣的物理现象为操纵声波提供了新的手段,引起了广泛的关注。在过去的20 年里,对AMMs的基础研究取得了巨大的成就,这不仅促进了现代声学的发展,同时展现了AMMs在工程应用中的潜力。本文中,我们回顾了AMMs的最新进展,着重展望其在工程领域的应用,特别是在吸声/隔声、声成像、声隐身等领域。此外,我们还概述了工程应用过程中面临的机遇和挑战。

关键词: 声学超构材料     吸声/隔声     声学成像     工程应用    

Design of noise-reduction seats for high-speed trains

Xiaojun DENG, Yanju ZHAO, Haijin ZHANG, Renzhong SHUAI, Leiwei ZHU

《机械工程前沿(英文)》 2018年 第13卷 第3期   页码 385-389 doi: 10.1007/s11465-017-0438-x

摘要:

Noise-reduction seats have been successfully used in concert halls, theaters, and other places that reduce noise. In this study, a new noise-reduction seat design was proposed for high-speed trains, which have unique interior noise spectral characteristics. First, before the noise-reduction seat models were fabricated, the parameters of high-performance sound-absorbing materials and perforated plates were selected by conducting a standing-wave tube test. The sound-absorption effects of the noise-reduction seats and normal seats were investigated and compared in a reverberation chamber. Test results showed that, compared with normal seats, the noise-reduction seats obtained a significantly improved sound-absorption coefficient in the entire frequency band. Furthermore, the test results were used to establish a simulation model for calculation, and the simulation results proved that the noise-reduction seats substantially reduced the noise in an entire train car. Finally, the noise-reduction seats were fabricated and installed in a full train car of an actual high-speed train. The test results showed that, compared with the normal seats, the noise-reduction seats decreased the noise level at a standard point in the passenger car by 1.5 dB. Therefore, the noise-reduction seats are effective in noise reduction.

关键词: high-speed train     sound-absorbing materials     perforated board     noise-reduction seats    

Using sound Clinical Paths and Diagnosis-related Groups (DRGs)-based payment reform to bring benefits

Zhi-Ruo ZHANG PhD, Jian-Qing MI MD, Zhao-Jun WEN MA, Sai-Juan CHEN MD, PhD, Zhu CHEN PhD, Long-Jun GU MD, Jing-Yan TANG MD, PhD, Shu-Hong SHEN MD, PhD,

《医学前沿(英文)》 2010年 第4卷 第1期   页码 8-15 doi: 10.1007/s11684-010-0018-5

摘要: China has been undertaking a profound reform on health care. Although more than 1.16 billion people have been covered by rural and urban medical insurance to date, the level of reimbursement from insurance is very limited, especially for critical diseases such as leukemia. This places heavy economic burdens on patients. Under these circumstances, systems innovation is imperative for the efficient utilization of limited funding. In this respect, certain valuable experience from other countries may prove helpful. The prospective payment system of Diagnosis-related Groups (DRGs), Clinical Paths, and the Comparative Effectiveness Analysis adopted by the National Institute of Health and Clinical Excellence (NICE, UK), can be fine tools to reduce medical costs and improve quality of services. Treatments of acute promyelocytic leukemia at Rui-Jin Hospital, and childhood acute lymphoblastic leukemia at Shanghai Children’s Medical Center, can be taken as suitable models to illustrate the crucial role of Clinical Paths in guaranteeing clinical and cost effectiveness of medical services for critical diseases, and to satisfactorily justify the feasibility of DRGs in China.

关键词: healthcare reform     diagnosis-related groups     clinical paths     comparative effectiveness analysis     acute promyelocytic leukemia     childhood acute lymphoblastic leukemia    

上海大剧院观众厅使用效果评析

李道增,许瑾

《中国工程科学》 2001年 第3卷 第1期   页码 15-21

摘要:

上海率先在我国建成第一座具有国际水平的现代化大剧院。作者对该剧院及设计单位进行了多次访问调研。文章扼要地介绍该剧院观众厅的视线设计、噪声控制、音质设计、声学参数的实测结果以及所采用的可移动音罩、可调混响装置等技术措施,并引用了国内外戏剧界、音乐界著名专家观摩演出后的声学评价以及观众对观众厅使用效果所给出的评分结果。

关键词: 观众厅     视线设计     噪声控制     音质设计     可移动音罩     可调混响装置    

船舶动力与传动装置振动控制技术发展研究

谢溪凌,董广明 ,林枫 ,张志谊 ,闻雪友

《中国工程科学》 2022年 第24卷 第6期   页码 193-202 doi: 10.15302/J-SSCAE-2022.06.018

摘要: Cairo : The 17th International Congress on Sound Vibration ICSV 17 , 2010‍.">35]。Cairo : The 17th International Congress on Sound Vibration ICSV 17 , 2010‍.">35]。Sound and Vibration , 1997 , 31 1 : 80 ‒ 94 ‍.">38]。

关键词: 动力与传动装置;振动声辐射;低噪声推进;振动控制    

搅拌摩擦焊镁合金隔声性能的研究

刘成武,钱林方

《中国工程科学》 2014年 第16卷 第8期   页码 93-98

摘要:

伴随搅拌摩擦焊在镁合金上的广泛应用,对其隔声特性研究尤为重要,基于自适应网格技术,对搅拌摩擦焊过程进行数值模拟,为后续声学计算提供约束模态,解决了材料属性难以确定的问题,一定程度上实现了焊接与声学的结合。自行设计和制造了混响箱,用以测量焊接镁合金板的隔声量,弥补了混响室测试小试件的不足。进而使用finite element-statistical energy analysis(FE-SEA)混合法计算焊接件的隔声量,与试验结果进行对比,吻合良好,表明此方法行之有效。通过对比焊接前后镁合金板件的隔声量,发现在吻合低谷区,焊接后板件的隔声有所降低。为了研究焊接参数对隔声的影响,分别改变焊接速度和搅拌头旋转速度,观察隔声量的变化,结果表明,这些参数都需要合理的设置,并非越大或者越小越好。

关键词: 搅拌摩擦焊     混响箱     FE-SEA混合法     焊接速度     搅拌头旋转速度    

一种基于数据驱动的浅海低频声源目标位置估计方法 Research Articles

孙显彬1,2,贾鑫明1,郑轶2,王振2

《信息与电子工程前沿(英文)》 2021年 第22卷 第7期   页码 1020-1030 doi: 10.1631/FITEE.2000181

摘要: 由于水听器的布置成本高且水下声音传播模型复杂,在浅海环境中进行低频声源目标位置估计较为困难。提出一种基于数据驱动的压缩循环神经网络 (compressed recurrent neural network, C-RNN)模型。该模型首先将矢量水听器接收到的声源信号压缩为动态声强信号,然后将声源位置进行GeoHash编码用于该模型的先验训练,最后使用训练好的模型进行浅海低频声源目标的位置估计。与传统数学模型相比,所提C-RNN模型能在复杂声场环境和地形条件下以低参数工况实时估计声源位置。实验结果表明,该模型对浅海环境中低频声源目标位置的平均定位精度为56米。

关键词: 矢量水听器;浅海;低频;位置估计;循环神经网络    

标题 作者 时间 类型 操作

From dBA to soundscape indices: Managing our sound environment

Jian KANG

期刊论文

From understanding to designing soundscapes

Jian KANG

期刊论文

两封闭弹性长方体连接结构的声辐射建模与分析

姚昊萍,张建润,陈南,孙庆鸿

期刊论文

Noise control technology for generator sets in enclosures

ZHANG Nailong, YANG Wentong, FEI Renyuan

期刊论文

基于到达时间差和到达频率差的多层等梯度声速剖面建模与声学定位

詹东洲1,王思甜1,蔡守桂1,郑华荣2,徐文2

期刊论文

3D finite element analysis of composite noise barrier constructed of polyurethane products

Ben DAEE,Hesham El NAGGAR

期刊论文

未来工程中的声学超构材料

鲁强兵, 李鑫, 张秀娟, 卢明辉, 陈延峰

期刊论文

Design of noise-reduction seats for high-speed trains

Xiaojun DENG, Yanju ZHAO, Haijin ZHANG, Renzhong SHUAI, Leiwei ZHU

期刊论文

Using sound Clinical Paths and Diagnosis-related Groups (DRGs)-based payment reform to bring benefits

Zhi-Ruo ZHANG PhD, Jian-Qing MI MD, Zhao-Jun WEN MA, Sai-Juan CHEN MD, PhD, Zhu CHEN PhD, Long-Jun GU MD, Jing-Yan TANG MD, PhD, Shu-Hong SHEN MD, PhD,

期刊论文

上海大剧院观众厅使用效果评析

李道增,许瑾

期刊论文

船舶动力与传动装置振动控制技术发展研究

谢溪凌,董广明 ,林枫 ,张志谊 ,闻雪友

期刊论文

搅拌摩擦焊镁合金隔声性能的研究

刘成武,钱林方

期刊论文

一种基于数据驱动的浅海低频声源目标位置估计方法

孙显彬1,2,贾鑫明1,郑轶2,王振2

期刊论文