声振论坛

 找回密码
 我要加入

QQ登录

只需一步,快速开始

声振论坛 展示 声学噪声 查看内容

基于有限单元法的轮胎噪声计算实例分享

2018-7-11 16:16| 发布者: weixin| 查看: 857| 评论: 1|原作者: weixin|来自: 声振之家公众号

摘要: 本文是一个基于有限单元法的轮胎噪声计算实例
编者按:轮胎噪声属于学术难点之一,本文是一个基于有限单元法的轮胎噪声计算实例,其采用的是sysnoise软件,虽然sysnoise已经改版为Virtual.Lab,但是其内核没有变化,设置上有所调整,功能上有所增强,但是本文的基本分析思路仍然值得借鉴。

Step 1:Create a FEM fluid model

Start LMS Sysnoise

File->New.

  • Name: Tire

  • File: tire_ifem.sdb

Model->Option.

  • Select ‘FEM Frequency Fluid’


1.png

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.

2.png

3.png

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

4.png

5.png

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.

6.png

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


7.png

Step 6:Compute the acoustic field

Inquire → Fmaximum

Analysis → Parameters

Analysis → Solve

  • set the frequency range to 20 to 400 linstep20


8.png

9.png

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

10.png

11.png

12.png

Step 8:Visualization of the results

PostProcess→ColorMap

13.png

14.png


本文根据LMS公司Li Zenggang的PPT整理而成


发表评论

最新评论

引用 lengxuef 2018-7-16 10:47
谢谢分享,这个是比较老的sysnoise教程了,可以用同样的流程在Virtual.Lab里面计算。

查看全部评论(1)

QQ|小黑屋|Archiver|手机版|联系我们|声振论坛

GMT+8, 2024-3-29 22:28 , Processed in 0.105293 second(s), 24 queries , Gzip On.

Powered by Discuz! X3.4

Copyright © 2001-2021, Tencent Cloud.

返回顶部