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


相关文档

更多相关文档

A new family of exponential infinite elements for the analysis of lossless electromagnetic
Infinite Sets of Integers Whose Distinct Elements Do Not Sum to a Power
A three-dimensional infinite element for modeling open-boundary field problems
Application of semi-analytical finite element method coupled with infinite element for ana
Numerical Simulation of Geotechnical Problems by Coupled Finite and Infinite Elements
Cross-Cultural Interface Design Determining Design Elements and Considerations for Internat
Spectral Element Approximations and Infinite Domains
Force model considerations for glued-sphere discrete element method simulations
岩石切削离散元建模的思考CONSIDERATIONS FOR DISCRETE ELEMENT MODELING OF ROCK CUTTING
Infinite element-based absorbing boundary technique for elastic wave modeling
[USACE] Geotechnical Analysis by the Finite Element Method
Finite Element Method
Energy Finite Element Method
A three-dimensional infinite element for modeling open-boundary field problems
A general infinite element for terminating finite element meshes
电脑版