基于有限单元法的轮胎噪声计算实例分享

Step 2：Import the mesh

File->Import.

• Set the Data Type to Mesh, Format to Free, click the FileBoxbutton to browse the CAR3DFEM.fre file.

  
  

Geometry->Check Mesh.

Step 3：Definition of face sets

Change the environment variable FEATRUEANGLE to 30

Geometry →Sets →Faces Selections

• Click the button to select an element of tire profile

  
  

Repeat to create fem-ifeminterface set

Step 4：Definition of the infinite properties

Model →Infinite

Order:3

Envelope Type:Ellipsoidal

Orignin:(-0.318,0,0)

Vector 1(0.4,0,0)

Vector 2(0,0,-0.4)

Vector 3(0,0.1,0)

Model->Fluid Properties.

Accept the default values.

Step 5：Definition of the boundary condition

Model →Vibrating Panels →FEA.

• First select the interface set, second set the frequency range to 20 to 400 linstep20 and the filename with displ.fre,thirdselect Use other file and tire_mesh.frefile

  
  

Step 6：Compute the acoustic field

Inquire → Fmaximum

Analysis → Parameters

Analysis → Solve

• set the frequency range to 20 to 400 linstep20

  
  

Step 7：Import and process the field points

File →Import .

• Set the Data Type to Point and Format to Free, Select the file ‘fp.fre’
  

  
  

Analysis →Process Fields Points

Step 8：Visualization of the results

PostProcess→ColorMap

本文根据LMS公司Li Zenggang的PPT整理而成