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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
关键词: equipment generator sound-attenuated enclosure convenient Enclosure development
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
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。
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
关键词: noise soundscape management sound environment soundscape index
Numerical study on natural convection in a square enclosure containing a rectangular heated cylinder
Jianhua LU, Zhaoli GUO, Zhenhua CHAI, Baochang SHI,
《能源前沿(英文)》 2009年 第3卷 第4期 页码 373-380 doi: 10.1007/s11708-009-0078-x
关键词: natural convection buoyant regime heated cylinder lattice Boltzmann
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
RR1 and RR2 gene deletion affects the immunogenicity of a live attenuated pseudorabies
Shijun YAN,He YAN,Chaolin ZHANG,Tongyan WANG,Qingyuan YANG,Zhe SUN,Yan XIAO,Feifei TAN,Xiangdong LI,Kegong TIAN
《农业科学与工程前沿(英文)》 2016年 第3卷 第1期 页码 81-86 doi: 10.15302/J-FASE-2016088
关键词: pseudorabies virus RR1 and RR2 ribonucleotide reductase vaccine candidate
Determination of the diffusion of poly(ethylene glycol) in polypropylene using ATR-FTIR
Hanjia CHEN, Xuhua SHI, Yafei ZHU, Yi ZHANG, Jiarui XU,
《化学科学与工程前沿(英文)》 2010年 第4卷 第3期 页码 336-341 doi: 10.1007/s11705-009-0230-5
关键词: diffusion polypropylene molecular diffusion equilibrium attenuated
Mark BOMBERG
《结构与土木工程前沿(英文)》 2010年 第4卷 第4期 页码 431-437 doi: 10.1007/s11709-010-0071-9
关键词: capillary active insulation integrated heating cooling and ventilation air conditioning (HVAC) and building enclosure dynamic insulation switchable thermal resistance variable U-value walls
Synthesis and characterization of macromolecular surface modifier PP--PEG for polypropylene
CHEN Hanjia, SHI Xuhua, ZHU Yafei, ZHANG Yi, XU Jiarui
《化学科学与工程前沿(英文)》 2008年 第2卷 第1期 页码 102-108 doi: 10.1007/s11705-008-0018-z
关键词: polypropylene crystallization capacity attenuated hydrophilicity reflectance
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
Yuanqiang ZHENG,Yanchun SHI,Chang AN,Ruisheng LI,Dongjun LIU,Yuehua KE,Kairong MAO,Mingjuan YANG,Zeliang CHEN,Shorgan BOU
《农业科学与工程前沿(英文)》 2014年 第1卷 第4期 页码 331-340 doi: 10.15302/J-FASE-2014032
关键词: Brucella live attenuated vaccine attenuation differential diagnosis
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
关键词: 3D finite element sound wall rigid polyurethane foam poly-wall numerical model calibration
杨昀,张和平,刘激扬
《中国工程科学》 2003年 第5卷 第4期 页码 55-60
标准房间/墙角火实验是一种全尺度火灾实验研究方法,主要用来研究室内装饰材料的火灾特性。介绍了ISO 9705房间/墙角火实验方法的原理和实验装置,以及国内外利用该方法对装饰材料火灾特性进行研究的进展情况,包括对材料热释放速率、烟气产生和室内火蔓延方面的研究。分析了其研究成果在室内装饰材料的分类及火灾危险性评估中的实际应用情况,并结合作者目前的工作对未来的研究内容做了一些展望。
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
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。
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
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
标题 作者 时间 类型 操作
Noise control technology for generator sets in enclosures
ZHANG Nailong, YANG Wentong, FEI Renyuan
期刊论文
Numerical study on natural convection in a square enclosure containing a rectangular heated cylinder
Jianhua LU, Zhaoli GUO, Zhenhua CHAI, Baochang SHI,
期刊论文
RR1 and RR2 gene deletion affects the immunogenicity of a live attenuated pseudorabies
Shijun YAN,He YAN,Chaolin ZHANG,Tongyan WANG,Qingyuan YANG,Zhe SUN,Yan XIAO,Feifei TAN,Xiangdong LI,Kegong TIAN
期刊论文
Determination of the diffusion of poly(ethylene glycol) in polypropylene using ATR-FTIR
Hanjia CHEN, Xuhua SHI, Yafei ZHU, Yi ZHANG, Jiarui XU,
期刊论文
A concept of capillary active, dynamic insulation integrated with heating, cooling and ventilation, air conditioning system
Mark BOMBERG
期刊论文
Synthesis and characterization of macromolecular surface modifier PP--PEG for polypropylene
CHEN Hanjia, SHI Xuhua, ZHU Yafei, ZHANG Yi, XU Jiarui
期刊论文
Attenuation mechanism of
Yuanqiang ZHENG,Yanchun SHI,Chang AN,Ruisheng LI,Dongjun LIU,Yuehua KE,Kairong MAO,Mingjuan YANG,Zeliang CHEN,Shorgan BOU
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