ESI NOVA 2018.0 x64-基於傳遞矩陣法（TMM）的多用途聲學預測工具
NOVA2018是一種基於傳遞矩陣法（TMM）的多用途聲學預測工具。該方法基本上基於在傳遞矩陣方面在不同介質中的平面波傳播的表示。這種方法很容易實現由彈性，多孔彈性和流體層組合而成的多層。在給定層中，聲傳播由傳遞矩陣[T]表示，使得V（M1）=[T]V（M2），其中MI和M2是靠近該層的前後面設置的兩個點，分別地，矢量V（M）的份量是描述介質的點M中的聲場的變量。使用不同界面處的連續性方程和源域和接收域中的阻抗方程（假設半無限），形成全局方程系統並求解反射和透射係數。在NOVA中實現了經典傳遞矩陣方法的改進，稱為FTMM（有限傳遞矩陣方法），以考慮有限尺寸對漫射場中聲學指標預測的影響。與基本傳遞矩陣方法相比，有限傳遞矩陣方法顯著改善了低頻預測。而且，對於吸收問題，它會導致在混響室中測量吸收。它還包括一個NovaFEM，這是一種多功能振動聲學預測工具。它基於三維有限元方法。它是NovaModule的低頻預測補充。
NovaFEM專為多層結構的振動聲學而設計，包括多孔和粘彈性層。它處理三種配置或計算方法，包括結構耦合到腔或半無限流體域（直接接近），多層插入波導（波導方法）和將多層處理為週期性單元電池三種。Windows版本僅限於使用quad4和hexa8元素進行網格劃分的矩形域。

TheESIGroupteamispleasedtoannouncetheavailabilityofESINOVA2018.0,isanadvancedsoftwareusedtodesignandoptimizetheacousticpropertiesofamulti-layermaterialaloneorattachedtoastructureundervarioustypesofexcitations.NOVAcanbeusedtooptimizetheacousticabsorptionandtransmissionlossofcomplexsoundtreatmentsinaveryshorttimethankstoitsuserfriendlyinterfaceandextremelyfastcomputingtime.

AboutESINOVA.NOVAsoftwareisaverypowerfultoolthatwillhelpyoudesignandoptimizetheacousticpropertiesofamultilayermaterialwithouthavingtospendtoomuchtimeonlongandexpensivetesting.

NOVAsoftwareallowsyoutooptimizetheacousticabsorptionandtransmissionlossofseveralmaterialsconfigurationsinaveryshorttimebecauseofitsuser-friendlyinterfaceandextremelyfastcomputingtime.Features:

-Novaincludestwomodules:
.Midandhighfrequencymodulesbasedontransfermatrixmethodwithcorrectionforfinitesizeeffects.
.LowfrequencymodulebasedonFEM/BEMprovidesthemostadvancedmodelsforporousmaterials(rigid,limp,felts,elastic,screens,andperforatedpanels).
-Allowsunlimitedcombinationofmateriallayersincludingelastic,visco-elasticfoam,fiber,felt,screen,septum,solid,perforatedplatesandfluidtosimulatereal-lifeacousticproblems.
-Accountsfororthotropic,sandwichandcompositepanels.
-Allowsforfrequencydependentproperties.
-Includesautomaticdetectionandcouplingofdomains(elasticandfluid).
-Studiestheeffectsofdifferentboundaryconditionsandvarioustypesofexcitations(planewaves,diffuseacousticfield,mechanical,pistons,pointsource,turbulentboundrylayer,etc.).
-Includesextensivematerialsdatabase.
-IncludesscriptstocalculateSEAinputparameters:modaldensity,lossfactor,radiationefficiency,wavenumbers,etc.
-IncludesascriptthatallowsthestudyofheterogeneousmaterialsbytheParallelTransferMatrixmethod(PTMM).
-Includesmicro-macro(bottom-up)scriptsforfoamsandfibers.
-Accountsforfinitesizeeffectsinthehighfrequencymodule.
-Allowssimulationofimpedanceandbazookatests,transmissionlosstestsandrandomincidenceabsorptiontests.
-Analyzesnarrowbandand1/3octaveband.
-Computesalargenumberofparameters:absorptionandreflectioncoefficient,surfaceimpedance,transmissionloss,dissipatedpowers,equivalentdampinglossfactor,spaceaveragedvelocityandpressureresponse,insertionloss,radiationefficiency,etc.
 
AboutESIGroup.ESIGroupisaleadinginnovatorinVirtualPrototypingsoftwareandservices.Specialistinmaterialphysics,ESIhasdevelopedauniqueproficiencyinhelpingindustrialmanufacturersreplacephysicalprototypesbyvirtualprototypes,allowingthemtovirtuallymanufacture,assemble,testandpre-certifytheirfutureproducts.Coupledwiththelatesttechnologies,VirtualPrototypingisnowanchoredinthewiderconceptoftheProductPerformanceLifecycle,whichaddressestheoperationalperformanceofaproductduringitsentirelifecycle,fromlaunchtodisposal.ThecreationofaHybridTwin™,leveragingsimulation,physicsanddataanalytics,enablesmanufacturerstodeliversmarterandconnectedproducts,topredictproductperformanceandtoanticipatemaintenanceneeds.

Product:ESINOVA
Version:2018.0
SupportedArchitectures:x64
WebsiteHomePage:http://www.esi-group.com
Language:english
SystemRequirements:PC
SupportedOperatingSystems:Windows7evenornewer