9512.net
甜梦文库
当前位置:首页 >> 建筑/土木 >>

Infinite Element Considerations


VAC Meeting Nov. 14, 2002

Infinite Element Considerations

David Herrin University of Kentucky

Vibro-Acoustics Consortium

VAC Meeting Nov. 14, 2002

Infinite Element Definition
Infinite Elements R Source Imaginary spheroid in the farfield where infinite elements are placed

Size of the sphere (may differ for a transient analysis)

R≥
FE mesh fills volume

3λ 2π

Vibro-Acoustics Consortium

2

VAC Meeting Nov. 14, 2002

Finite Element Model Creation
Infinite Elements

Solid Model

Finite Element Model

Vibro-Acoustics Consortium

3

VAC Meeting Nov. 14, 2002

Finite Element Model Creation
Infinite Elements Imaginary spheroid in the farfield where infinite elements are placed Order n defines the multipole expansion used to calculate the pressure at field points outside the FE mesh domain proper

P(r ) =

e ? ikr r



Fn (r , θ , φ ) rn n=0


Choose from 1st to 10th order infinite elements

Vibro-Acoustics Consortium

4

VAC Meeting Nov. 14, 2002

Test Case - Transient
Infinite Elements

Quarter Sphere 2 m outer – 0.25 m inner

Infinite Elements

Step acceleration
Vibro-Acoustics Consortium
5


赞助商链接

更多相关文章:
Apache Tomcat 8 (8.0.20) - Security Considerations
such as triggering high CPU consumption via an infinite loop, that the security...Context This applies to Context elements in all places where they can be...
Finite Element Analysis Report for Drying Raw Mill new
Finite Element Analysis Report for Drying Raw Mill new_建筑/土木_工程科技_...Safety factor with respect to allowable infinite life category A stress ...
abaqus单元属性大总结_图文
(与 S3T 单元相同) SFM3D3 F3D3 R3D3 ACIN3D3 3-node 3D rigid triangular facet 三节点三维刚性三角切面 3-node linear 3D acoustic infinite element 三...
PM68533
Such equations arise from considerations of random walk problem, molecular ...Clearly is infinite. This implies that there exist R ( m0 , n0 ) < ?...
创意简报
“concept” that gives them infinite choices and complete control over what ...(Executional Considerations) 以电视机为参照物,突出HiD突破性的独特的上网功能,...
8天攻克8000词汇
infinite infinitive infinitude confine confinement define definite definition indefinite refine refined refinement affinity definitive infinitesimal finite JAC/JEC ...
透明度与公司治理【外文翻译】
While both of these factors are undoubtedly important considerations in firms ...be zero, infinite, or a finite positive value depending on the parameters....
更多相关标签:

All rights reserved Powered by 甜梦文库 9512.net

copyright ©right 2010-2021。
甜梦文库内容来自网络,如有侵犯请联系客服。zhit325@126.com|网站地图