Muzvisikwa, zviremwaremwa zvinoshandisa ultrasonic echolocation kuwana mhuka yavo, uye panguva imwe chete, mhuka yakabatwa yakashandurawo dziviriro - mamwe mamoths anogona kunyatsotora mafungu e ultrasonic kuburikidza nezvimiro zvakanaka pamapapiro azvo kudzivirira zviratidzo zvinonzwika zvichiratidza nzvimbo yavo.Aka ndekekutanga masayendisiti kuwana acoustic zvinhu mune zvakasikwa.Kunyangwe mapapiro ezvipfukuto akanangana nemafungu e ultrasonic (iyo vibration frequency yakakura kupfuura 20,000 Hz), misimboti yavo inobatwa neruzha inopindirana nemhando dzese dzezvinhu zvinotora ruzha zvatinoona muhupenyu hwedu, asi iyo yekupedzisira Rongedza dhizaini yakafanana kune frequency. bhendi (20Hz-20000Hz) inoenderana nekunzwa kwevanhu.Nhasi, ngatitaure nezve NVH-inoenderana nefuro zvinhu.
Mutsindo unobva pakuzunguzika kwechinhu, uye i wave phenomenon inopararira nepakati uye inogona kunzwisiswa nenhengo yemunhu inonzwa.NVH inoreva ruzha (ruzha), vibration (vibration) uye hukasha (hasha), iyo ruzha uye kuzununguka ndiko kunonyanya kunzwiwa nesu, nepo hukasha hweruzha hunonyanya kushandiswa kutsanangura maitiro emuviri wemunhu ekutenderera uye ruzha. .kunzwa kusagadzikana.Sezvo zvitatu izvi zvichionekwa panguva imwe chete mumagetsi ekudengenyeka uye zvisingaparadzanisiki, zvinowanzodzidzwa pamwechete.
Sezvinoratidzwa mumufananidzo uri pazasi, kana ruzha rwunoiswa muchinhu kana pamusoro peiyo acoustic structural component, chikamu chesimba rekurira chinoratidzwa, chikamu chayo chinopinda mukati mechinhu, uye chikamu chayo chinotorwa nechinhu, icho ndiko, kukweshana pakati peruzha nepakati pepakati panguva yekuparadzira kana kukanganisa kwechikamu.Vibration, nzira iyo simba rekurira rinoshandurwa kuita kupisa uye kurasika.Kazhinji, chero chinhu chinogona kutora uye kuratidza ruzha, asi mwero wekutora uye kufungisisa unosiyana zvakanyanya.
Zvishandiso zveNVH zvinonyanya kukamurwa kuita mapoka maviri: zvinhu zvinotora ruzha uye zvinodzivirira ruzha.Kana masaisai eruzha apinda muchinhu chinobata inzwi, anoita kuti mhepo neshinda zviri muchinhu chacho zvizunguzike, uye simba renzwi rinochinjwa kuva simba rokupisa uye chimwe chikamu chacho chinopedzwa, kungofanana nokurova chipanji nesimbi. punch.
Ruzha rwekudzivirira ruzha ndicho chinhu chinoshandiswa kuvhara ruzha, kungofanana nechibhakera chinorova nhovo nekuchivharira zvakananga.Ruzha rwekudzivirira ruzha rwakakora uye haruna-porous, uye zvakaoma kuti masaisai enzwi apinde, uye mazhinji esimba reinzwi rinoratidzwa kumashure, kuitira kuti uwane mhedzisiro yekuvharisa inzwi.
Zvishandiso zvine furo zvine porous dhizaini zvine mabhenefiti akasiyana mukutorwa kwezwi.Zvishandiso zvine dense microporous dhizaini kunyange zvine yakanaka yekuvharisa ruzha.Yakajairika NHV acoustic foams inosanganisira polyurethane, polyolefin, rabha resin, uye girazi.Foam, furo resimbi, nezvimwewo, nekuda kwehunhu hwakasiyana hwezvinhu zvacho pachayo, mhedzisiro yekutorwa kwenzwi uye kuderedza ruzha kuchave kwakasiyana.
Polyurethane foam
Polyurethane foam zvinhu ine yakasarudzika network chimiro, iyo inogona kutora yakakura yakawanda inouya inonzwika wave simba kuti iwane yakanaka yekunyudza ruzha, uye panguva imwechete ine yakakwirira rebound uye yakanaka buffering basa.Nekudaro, simba reyakajairwa polyurethane furo rakaderera, uye ruzha rwekuvharidzira haruna kunaka, uye kuita kwayo kunyudzwa kunoderera nekufamba kwenguva.Mukuwedzera, kupisa kunobudisa gasi rine chepfu, iyo isingashamwaridzani nemhoteredzo.
XPE/IXPE/IXPP polyolefin furo zvinhu
XPE/IXPE/IXPP, kemikari-yakabatana/electronic cross-linked polyethylene/polypropylene foam material, ine mutsindo wekunyura, kupisa kwemafuta, cushioning uye kuchengetedzwa kwezvakatipoteredza, uye yayo yemukati yakanaka yakazvimiririra bubble chimiro chakanakira kuvharira ruzha uye kuderedza ruzha.Excellent performance.
rubber foam
Rabha rine furo chinhu chakanakira NVH, uye zvinhu zvakaita sesilicone, ethylene-propylene-diene rubber (EPDM), nitrile-butadiene rubber (NBR), neoprene (CR), uye styrene-butadiene rubber (SBR) zviri nani pane zvakapfuura. zvinhu zviviri., The density yakakwira, uye mukati makazara madiki ma voids uye semi-akavhurika zvimiro, zviri nyore kutora inonzwika simba, zvakanyanya kuoma kupinda, uye attenuate ruzha masaisai.
melamine resin furo
Melamine resin foam (melamine foam) chinhu chakanakisa chinobata ruzha.Iine matatu-dimensional grid structure system ine mavhuriro akakwana.Iyo vibration inopedzwa uye inonyudzwa, uye iyo inoratidzwa wave inogona kunyatso kubviswa panguva imwe chete.Panguva imwecheteyo, ine akawanda-anoshanda uye akaenzana mabhenefiti pane echinyakare furo zvinhu maererano nemurazvo retardance, kupisa kupisa, huremu huremu uye chimiro chekugadzirisa.
foam aluminium
Wedzera zvinowedzerwa kune yakanyungudutswa yakachena aruminiyamu kana aruminiyamu alloy wotumira kubhokisi rinopupuma, jekiseni gasi kuti igadzire furo remvura, uye simbisa furo remvura kuti rigadzire simbi.Iyo ine yakanaka yekuvharisa mutsindo kugona, uye kuita kwekurira kwekurira kunogara kwenguva refu, hupenyu hwesevhisi hunobudirira hunogona kusvika makore anopfuura makumi manomwe, uye inogona kudzokororwa uye kushandiswazve 100%.
furo girazi
Iyo inorganic isiri-metallic girazi zvinhu zvakagadzirwa negirazi rakaputsika, furo mumiriri, zvakagadziridzwa zvekuwedzera uye furo accelerator, zvichingodaro, mushure mekunatswa zvakatsetseka uye zvakasanganiswa zvakafanana, zvobva zvanyungudutswa pakupisa kwakanyanya, kupupa furo uye kunyungudika.
Muhupenyu chaihwo, kazhinji hapana chinhu chinogona kutora mafungu eruzha mumabhendi akasiyana, uye hapana chinhu chinogona kuita zvisina mhosva mumashandisirwo.Kuti tive nekuita zvirinani kunyudzwa kweruzha, isu tinowanzo kuona kusanganiswa kwepamusoro acoustic furo uye iwo ane mhando dzekupfekwa kweruzha / ruzha rwekudzivirira zvinhu kuti aumbe akasiyana furo akasimbiswa zvinhu zvinoumbwa, uye panguva imwe chete kuwana mhedzisiro. Yekunyudzwa kweruzha rwezvinhu uye kuumbwa kweruzha kunyudzwa, kuti uwane Iyo inzwi rekunyudza kuita kwezvinhu mumabhendi akasiyana-siyana epamusoro frequency uye yakaderera frequency.Semuenzaniso, iyo inoumbwa maitiro eacoustic foam uye akasiyana-siyana asina kurukwa maitiro anogona kushandisa zvizere iyo yakasarudzika-mativi matatu-dimensional chimiro chekupedzisira kudzikisa zvinobudirira kuzunguzika kwemafungu eruzha, kugadzira mikana isingaperi yekunyura inzwi uye kuderedza ruzha;) foam sandwich layer composite material, mativi maviri eganda akasungwa nekabhoni fiber reinforced material, iyo ine yakakwirira mechaniki kuoma uye yakasimba simba rekuita, nekudaro kuwana zvirinani kunyura uye kuderedza ruzha.
Parizvino, NVH furo zvinhu zvinoshandiswa zvakanyanya mukufambisa, kuvaka engineering, kuderedza ruzha rweindasitiri, kugadzira mota uye mamwe minda.
Transportation
kuvakwa kwezvifambiso zvemumaguta munyika yangu kwapinda mudanho rekukura nokukurumidza, uye kuvhiringika kweruzha rwakadai semotokari, zvitima, njanji dzemumaguta, uye zvitima zvemaglev zvakwezva ngwariro yakapararira.Mune ramangwana, acoustic foam uye zvinhu zvaro zvakaumbwa zvine mukana mukuru wekushandisa mukudzivirira kwekurira uye kuderedza ruzha rwemigwagwa mikuru uye traffic yemumaguta.
mabasa ekuvaka
Panyaya yezvivakwa uye chimiro, mukuwedzera kune yakanaka acoustic kuita, zvinhu zvine zvakanyanyisa zvinodikanwa pakuchengetedza, uye kudzoreredza kwemurazvo chiratidzo chakaoma chisingagone kupfuura.Mapurasitiki efoam echinyakare (akadai se polyolefin, polyurethane, nezvimwewo) anogona kutsva nekuda kwekubvira kwawo.Pakutsva, dzinonyunguduka uye dzinobudisa madonhwe.Madonhwe anopisa achakurumidza kukonzera kupararira kwemoto.Kuti iite kuti ienderane nezvinodiwa nemirazvo inodzoreredza murazvo uye zviyero, zvinowanzodikanwa kuwedzera zvinodzoreredza murazvo, mazhinji acho anoora kana akaiswa mukupisa pakupisa kwakanyanya, uye anoburitsa huwandu hukuru hwehutsi, muchetura uye magasi anoparadza.kukonzera njodzi dzechipiri uye kusvibiswa kwezvakatipoteredza.Naizvozvo, mundima yekuvaka, acoustic zvinhu zvine murazvo unodzoreredza, utsi hushoma, huturu hushoma, uye hunobudirira hudzikisire moto huchasangana nemukana uyu mukuru wekuvandudza musika, ingave zvivakwa zvekutengesa senge nzvimbo dzemitambo, mabhaisikopo, mahotera, horo dzekonti, etc. zvivakwa zvekugara.
Industrial Noise Reduction
Ruzha rwemaindasitiri rwunoreva ruzha rwunogadzirwa nefekitori panguva yekugadzira nekuda kwemakanika vibration, frictional impact uye kuvhiringwa kwemhepo.Nekuda kweakawanda uye akapararira maindasitiri eruzha masosi, mhando dzeruzha dzakanyanya kuoma, uye inoenderera inonzwika masosi ekugadzira zvakare yakaoma kuziva, iyo yakaoma kwazvo kubata.
Naizvozvo, kutonga kweruzha munzvimbo yeindasitiri kunotora musanganiswa wematanho akadai sekunyudzwa kweruzha, kuvharira ruzha, kudzikisira ruzha, kudzikisa kuzunguzika, kuderedza ruzha, kuparadzwa kwechimiro cheresonance, uye kuputira mutsindo wepombi, kuitira kudzoreredza ruzha kune imwe. nhanho inogamuchirika kuvanhu.dhigirii, inova zvakare inogona kushandiswa nzvimbo yeacoustic zvinhu.
kugadzira motokari
Iwo masosi eruzha rwemotokari anogona kunyanya kukamurwa kuita ruzha rweinjini, ruzha rwemuviri resonance, ruzha rwetai, chassis ruzha, ruzha rwemhepo uye mukati resonance ruzha.Ruzha rwakaderedzwa mukati mekabhini ruchavandudza zvakanyanya kunyaradzwa kwemutyairi nevagari.Mukuwedzera pakuvandudza kuoma kwechasi uye kubvisa nzvimbo yakaderera-frequency resonance maererano nekugadzirwa, kubviswa kweruzha kunonyanya kubviswa nenzira yekuzviparadzanisa uye kutora.Kubva pakuona kwekuchengetedza simba, zvinhu zvinoshandiswa zvinodiwa kuti zvive nyore.Kubva pakuona kwekuchengetedza, zvinhu zvinodiwa kuti zvive nemoto uye kupisa kwekudzivirira zvinhu.Kuuya kweacoustic foam uye akasiyana-siyana akawanda-inoshanda composite zvinhu zvinopa mikana mitsva yekuvandudza kupikisa ruzha, chengetedzo, kuvimbika, kuchengetedza simba uye kuchengetedzwa kwezvakatipoteredza kwemotokari.
Nguva yekutumira: Aug-17-2022