Virtual.lab声固耦合的隔声量仿真分析教程.docx

FEM Direct Vibro-Acoustic Analysis Case TutorialObjective:The goal of this tutorial is to calculate the acoustic response of a glass/PVB plate (a laminated safety glass with a Polyvinylbutyral layer in between). The tutorial includes using the following analysis cases: Structural Modal caseDirect Structural Forced ResponseDirect Structural Vibro-Acoustic ResponseTransmission LossThe?model contains a Visco-elastic frequency-dependent material.Pre-Requisites:Software Configurations that are needed to run the tutorial:Licenses to set up the case in LMS Virtual.Lab: "Desktop (VL-HEV.21.1 or equivalent)" and "Finite Element Acoustics (VL-VAM.36.2)" When solving the acoustic response case, the license for product "LMS Virtual.Lab FEM Vibro-Acoustics Structural Solver VL-VAM.45.2" is needed.Solving the Random Post-processing case to get the Transmission Loss curve will require the license for "Random Vibro Acoustic Analysis (VL-NVP.20.3)"?Tutorial Data Files:StructuralGroups.xmlSAFyoung.xlsLaminatedStructure.bdfFPmesh.bdfAMLsender.bdfAMLreceiver.bdfAcousticGroups.xml[All data files can be found on the APPS n DOCS DVD, in an archive called?VAM_DirectVA-TL. For ease of use, it is best to copy all files to a local folder.]STEP BY STEP Tutorial:STEP 1 After starting LMS Virtual.Lab, create a new document in the Acoustic Harmonic FEM Workbench (Start Acoustics Acoustic Harmonic FEM).STEP 2Select File Import from the main menu. [The Import command can also be selected from the contextual menu of the Links Manager, by right clicking] A file selector window appears allowing you to specify the file type and the file name. [For more details, see Importing Data]Select the file type NASTRAN Bulk File (*.bdf, *.NS, *.nas, *.dat) and browse for the file LaminatedStructure.bdf and click the Open button. A new dialog box appears requesting the selection of data that needs to be imported from the file. The data entries that are not available in the file are grayed out.Select in Split into