机械5

半消声室计算机辅助设计与计算 摘要 随着社会的发展，噪声已成为现下的一大新污染源，控制噪声也就成为了必须要解决的问题，在这种情况下，半消声室产生了。半消声室可以提供自由声场来进行声学产品噪声及振动特性的测试，以便减免噪声。除了这方面的应用外，半消声室也在其它领域发挥了它的价值。半消声室的发展越来越先进，由原先的体积大和寿命低到现在的体积可控并且使用寿命也大幅大提高，并且半消声室的发展也越来越受到重视。 本文采用了计算机辅助的方式来进行半消声室的零件参数计算。半消声室包括了墙体、吸声结构、隔震系统三部分。墙体结构部分本文采用了双层墙的结构，本文对双层墙的材料、厚度、墙壁之间的间隙、墙壁之间的填充物、墙壁的吸声处理方法以及墙壁的隔声量进行了详细的讨论以及确定合适方案；室内吸声结构本文采取的是尖劈结构，本文对选取尖劈吸声结构的原因、尖劈的材料、形状以及尺寸进行了比较详细的讨论与计算，并且确定下合适的方案；隔震部分本文采用的是通过弹簧来隔震，本文对隔震弹簧的刚度、尺寸、所用数量以及具体的安装方式进行了计算以及确定。 在确定了具体尺寸之后，通过solidworks画出了半消声室的装配体，并且对此消声室进行了建造难度分析，最后得出结论，此半消声室比较符合要求，并且预期会有比较好的性能效果以及比较长的使用寿命。 关键词：半消声室；尖劈；隔声门；隔震系统 ABSTRACT With the developme
nt of society,
noise has become a major
new pollutio
n source, a
nd
noise co
ntrol has become a problem that must be solved. I
n this case, the semi a
nechoic room has come i
nto bei
ng. The semi a
nechoic chamber ca
n provide free sou
nd field to test the
noise a
nd vibratio
n characteristics of acoustic products so as to reduce
noise. I
n additio
n to this applicatio
n, the semi a
nechoic chamber has also played its role i
n other fields. The developme
nt of semi a
nechoic chamber is becomi
ng more a
nd more adva
nced. The volume of the semi a
nechoic chamber is much lower tha
n that of the
now. It is co
ntrollable a
nd the service life is greatly improved. A
nd the developme
nt of the semi a
nechoic chamber is also paid more a
nd more atte
ntio
n. I
n this paper, the computer aided method is used to calculate the part parameters of the semi a
nechoic chamber. The semi a
nechoic chamber i
ncludes three parts: the wall, the sou
nd absorptio
n structure a
nd the isolatio
n system. The wall structure with the structure of double wall, double wall material, the thick
ness, the gap betwee
n the walls, walls betwee
n the filler walls, sou
nd processi
ng method a
nd sou
nd i
nsulatio
n wall are discussed i
n detail a
nd determi
ne the appropriate scheme; i
ndoor sou
nd absorptio
n structure of this paper is to wedge structure, the the reaso
ns for selectio
n, wedge absorbi
ng structure of wedge material, shape a
nd size are discussed a
nd compared i
n detail, a
nd determi
ne the appropriate pla
n; isolatio
n part is used by the spri
ng to isolatio
n, the isolatio
n spri
ng stiff
ness, size, the
number a
nd i
nstallatio
n method of co
ncrete is calculated a
nd sure. After determi
ni
ng the specific size, the assembly of semi a
nechoic room by SolidWorks, a
nd this was a
n a
nechoic chamber co
nstructio
n a
nalysis, fi
nally co
ncluded that the semi a
nechoic chamber accords with the requireme
nts, a
nd is expected to have better performa
nce a
nd lo
ng service life. Key Words：Semi a
nechoic room；Wedge；Sou
nd i
nsulatio
n door；Isolatio
n system 目录 摘要I ABSTRACT II 第一章绪论1 1.1消声室的由来1 1.2消声室的意义及价值1 1.3消声室的目前研究概况以及发展趋势2 1.4选题目的以及所要研究的内容2 第二章半消声室的隔声设计3 2.1半消声室的墙体结构设计3 2.2隔声门的设计与计算6 第三章隔震系统的设计与计算9 3.1弹簧的设计9 3.2弹簧的设计及强度验算10 3.3弹簧的安装13 第四章吸声结构的设计与计算13 4.1消声室设计对吸声结构的要求13 4.2吸声材料14 4.3尖劈的设计与计算16 4.4利用VB编程进行零件调用以及装配。 19 第五章总结21 附录1：外文翻译23- 附录2：外文原文29- 附录3尖劈零件设计代码34- 致谢44-