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空间吸声体:比表面吸声材料的吸声效率更高

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空间吸声体:比表面吸声材料的吸声效率更高

发布日期:2019-10-23 作者: 点击:

吸声材料是指具有较强的吸收声能、能有效减低噪声性能的材料。其凭借自身的多孔性、薄膜作用或共振作用而对入射声能具有吸收作用。根据其吸声机理,可将其分为多孔性吸声材料、共振吸声结构以及由它们组成的复合吸声结构等。空间吸声体作为一种比较特殊的吸声材料倍受人们的关注。

新疆25选7走势图KONGJIANXISHENGTISHIYIZHONGFENSANXUANGUAYUJIANZHUKONGJIANSHANGBU,YONGYIJIANGDISHINEIZAOSHENGHUOGAISHANSHINEIYINZHIDEXISHENGGOUJIAN。KONGJIANXISHENGTIJUYOUYONGLIAOSHAO、ZHONGLIANGQING、TOUZISHENG、XISHENGXIAOLVGAO、BUZHILINGHUO、SHIGONGFANGBIANDETEDIAN。XUDUOGUOJIACONG20SHIJI50NIANDAIQIYIKAISHISHIYONGKONGJIANXISHENGTI,70NIANDAIYINGYONGZHUJIANGUANGFAN。ZHONGGUOCONG70NIANDAIQIKAISHIYINGYONG,80NIANDAIYINGYONGRIQUZENGDUO。 

CHANGYONGDEKONGJIANXISHENGTIDUOCAIYONGXIANWEIXISHENGCAILIAO,YUSHINEIBIAOMIANSHANGDEXISHENGCAILIAOXIANGBI,ZAITONGYANGTOUYINGMIANJIXIA,KONGJIANXISHENGTIJUYOUJIAOGAODEXISHENGXIAOLV。ZHEISHIYOUYUKONGJIANXISHENGTIJUYOUGENGDADEYOUXIAOXISHENGMIANJI(BAOKUOKONGJIANXISHENGTIDESHANGDINGMIAN、XIADIMIANHECEMIAN);LINGWAI,YOUYUSHENGBOZAIXISHENGTIDESHANGDINGMIANHEJIANZHUWUDINGMIANZHIJIANDUOCIFANSHE,CONGERBEIDUOCIXISHOU,SHIXISHENGLIANGZENGJIA,TIGAOLEXISHENGXIAOLV。TONGCHANGYIZHONG、GAOPINDUANXISHENGXIAOLVDETIGAOZUIWEIXIANZHU。 

广州空间吸声体

空间吸声体新疆25选7走势图的吸声性能常用不同频率的单个吸声体的有效吸声量来表示。早在1940年代,Olson(1946年)就曾利用声学类比电路对空间吸声体的吸声机理做了分析。他指出当吸声体材料的声阻抗选择得当,加上衍射声的影响,会产生大于1的吸声系数,乃至达到一般贴墙安装时吸声量的两倍。它适用于吸声体的尺度比波长小得多的频率范围。

KONGJIANXISHENGTIXISHENGJIANGZAO(HUOJIANGDIHUNXIANGSHIJIAN)DEXIAOGUOBUJINQUJUEYUXISHENGTIBENSHENDEXINGZHI,ERQIEHAIYUKONGJIANXISHENGTIDESHULIANG、XUANGUAJIANJUYIJIJIANZHUKONGJIANNEIDESHENGCHANGTIAOJIANYOUGUAN。RUYUANSHINEIBIAOMIANXISHENGLIANGHENSHAO,FANSHESHENGJIAODUO,HUNXIANGSHIJIANHENZHANG,ZEXUANGUAKONGJIANXISHENGTIHOUDEJIANGZAOXIAOGUOCHANGWEI5~8FENBEI,ZUIGAOSHIKEDA10~12FENBEI;RUYUANSHINEIBIAOMIANXISHENGLIANGJIAODA,HUNXIANGGUOCHENGBUMINGXIAN,ZEBUBIXUANGUAKONGJIANXISHENGTI。

空间吸声体

广州空间吸声体新疆25选7走势图可根据使用场合和吸声需要作成适当的几何形状和尺寸,一般它由4个部分组成: 

1、GUJIA。ZUOWEIZHICHENG,KEYIYONGMUJIN、JIAOGANGHUOBOBIGANGDENG。 

新疆25选7走势图2、HUMIANCENG。CHANGYONGCHUANKONGLVDAYU20%、HOUDUWEI0.1-1.0mmDECHUANKONGHUOKAIFENGBOTIEPI、LVBOHUOSULIAOPIAN。CHUANKONGKONGJINGQU4-8mm。 

3、XISHENGTIANLIAO。YIBANYONGCHAOXIBOLIMIANZHAN、KUANGMIANZHAN、LIQINGBOLIMIANZHANDENGDUOKONGCAILIAO,BINGYIBOXIANBUDENGTOUQIXINGNENGLIANGHAO、TONGSHIYOUYOUYIDINGQIANGDUDECAILIAOZUOMENGMIANCENG。ZAICHAOSHIHUANJINGZHONG,YEKECAIYONGDANCENGHUOSHUANGCENGCHUANKONGBANZUOXISHENGCENG(WEIZENGJIADIPINXISHOU,CHUANKONGLVYIBANDIYU5%),QUDAIDUOKONGCAILIAO。 

新疆25选7走势图4、DIAOJIAN。RUJINSHUDIAOER、DIAOGOU、LUOSHUANDENG。SHIYONGSHI,GEBIAOMIANJUNZHIYUSHENGCHANGZHIZHONG,YOULIYUCHONGFENFAHUICAILIAODEXISHENGZUOYONG。

新疆25选7走势图KONGJIANXISHENGTIGENJUJIANZHUWUDESHIYONGXINGZHI、MIANJI、CENGGAO、JIEGOUXINGSHI、ZHUANGSHIYAOQIUHESHENGYUANTEXING,KEYOUBANZHUANG、FANGKUAIZHUANG、ZHUTIZHUANG、YUANZHUIZHUANGHEQIUTIZHUANGDENGDUOZHONGXINGZHUANG。QIZHONGBANZHUANGDEJIEGOUZUIJIANDAN,YINGYONGZUIPUBIAN。

空间吸声体选择

空间吸声体最佳设计应该是利用最少的吸声体单元,获得尽可能多的吸声效果。一般认为,若使用板状吸声体,则其总面积相当于房间平顶面积的30%~40%时,吸声效率可以达到最佳值,经济效果也最好。空间吸声体选择主要需要考虑以下几个方面的因素:

新疆25选7走势图1、CAILIAOHEJIEGOU:CHANGJIANDEKONGJIANXISHENGTIYOUGUJIA、HUMIANCENGHEXISHENGTIANLIAOGOUCHENG。CAILIAODEXUANZEYINGSHIKONGJIANXISHENGTIDEDAXIAO、GANGDUHEZHUANGXIUYAOQIUERDING。GUJIAKECAIYONGMUCAI、JIAOGANG、BOBIXINGGANGDENG。HUMIANCENGKECAIYONGSULIAOCHUANGSHA、GANGSIWANGHEGEZHONGBANCAI(RUBOGANGBAN、LVBAN、SULIAOBANDENG)DECHUANKONGBAN,QIBANHOUKEQU0.5~1.0HAOMI,KONGJINGKEQU4~8HAOMI,CHUANKONGLVYINGDAYU20%。XISHENGTIANLIAOTONGCHANGCAIYONGCHAOXIBOLIMIANWAIBAOBOLIXIANWEIBU,QITIANCHONGMIDUKEQU25~30QIANKE/MI3,HOUDUYINGGENJUSHENGYUANPINPUTEXINGZAI5~10LIMIFANWEINEIXUANDING。

2、XUANGUASHULIANG:KONGJIANXISHENGTIDEXUANGUASHULIANGYINGGENJUXISHENGTIDEXISHENGTEXINGHEJIANGDISHINEIZAOSHENG(HUOKONGZHIHUNXIANGSHIJIAN)SUOXUZENGJIADEXISHENGLIANGLAIJISUANQUEDING。SHIJIGONGCHENGZHONGWEILEMANZUJIANGDIZAOSHENGHUOKONGZHIHUNXIANGSHIJIANDEYAOQIU,KONGJIANXISHENGTIDEZONGMIANJIYIQUJIANZHUWUDINGMIANJIDE40~50%。

3、XUANGUAFANGSHI:KONGJIANXISHENGTIDADUOXUANGUAYUJIANZHUWUKONGJIANDEDINGBU,QIEYILIDINGDIAOGUAJUDUO。WEILETIGAOXUANGUAKONGJIANXISHENGTIDEJIANZHUZHUANGXIUXIAOGUO,YINGDUIKONGJIANXISHENGTIDEXINGSHI、SECAI、XUANGUAFANGSHIDENGJINXINGZONGHEKAOLV。RUOSHIKONGJIANXISHENGTIXUANGUACHENGYIDINGDEYISHUTUAN,BINGYUCAIGUANG、ZHAOMING、TONGFENGHEJIANZHUZHUANGXIUDENGHUXIANGPEIHE,ZEZHENGTIXIAOGUOGENGHAO。 

新疆25选7走势图KONGJIANXISHENGTISHIYONGYUGUANGBODIANTAI、DIANSHITAILUYINSHI、YANBOSHI、XUEXIAO、TIYUGUAN、DAJUYUAN、TUSHUGUAN、WENHUAZHONGXIN、LITANG、DUOGONGNENGTING、HUIYISHIJIYINLETINGDENGMIANJIDA、SHENGYUANDUO、ZAOSHENGGAO、YINZHIYAOQIUGAODECHANGSUO。

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关键词:空间吸声体,广州空间吸声体,空间吸声体选择

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