소음진동 (Journal of KSNVE)

한국소음진동공학회 (The Korean Society for Noise and Vibration Engineering)
권호 표지

일반 경계 조건을 가진 얇은 물체에 대한 직접 경계 요소법의 개발

Development of the Direct Boundary Element Method for Thin Bodies with General bBundary Conditions

  • 이강덕 (현대자동차(주) 차량시험2팀) ;
  • 이덕주 (한국과학기술원 항공우주공학과)
  • 발행 : 1997.12.01
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

A direct boundary element method (DBEM) is developed for thin bodies whose surfaces are rigid or compliant. The Helmholtz integral equation and its normal derivative integral equation are adoped simultaneously to calculate the pressure on both sides of the thin body, instead of the jump values across it, to account for the different surface conditions of each side. Unlike the usual assumption, the normal velocity is assumed to be discontinuous across the thin body. In this approach, only the neutral surface of the thin body has to be discretized. The method is validated by comparison with analytic and/or numerical results for acoustic scattering and radiation from several surface conditions of the thin body; the surfaces are rigid when stationary or vibrating, and part of the interior surface is lined with a sound-absoring material.

키워드

참고문헌

  1. J. Acoust. Soc. Am. v.88 The Solution of Coupled Interior/Exterior Acoustic Problems using the Boundary Element Method Seybert. A.F.Cheng;C.Y.R.;Wu, T.W.
  2. J. Acust. Soc. Am. v.90 The Thin-Shape Breakdown(TSB) of the Helmholtz Integral Equation Martinez, R.
  3. J. Acoust. Soc. Am. v.92 Numerical Modeling of Acoustic Radiation and Scattering from thin Bodies using a Cauchy Principal Integral Equation Wu, T.W.;Wan, G.C.
  4. Z. Phy. v.126 Zur Formulierung Eines Allegemeinen Beugungsproblems Durch Eine Integralgleichung Maue, A.W.
  5. J. Math. Phy. v.7 Acoustic Scattering from an Interface between Media of Greatly Different Density Mitzner, K.M.
  6. Applied Mechanics Reviews v.47 Regularization Techniques Applied To Boundary Element Method Tanaka, M;Sladek, V.;Sladek, S.
  7. J. Acoust. Soc. Am. v.97 A Direct Boundary Element Method For Acoustic Radiation And Scattering From Mixed Regular and Thin Bodies Wu, T.W.
  8. J. Sound Vib. v.107 Sound Radiation from Ducts: Theory And Experiment Hamdi, M.A.;Ville, J.M.
  9. Ieee J. Osc. Eng. v.Oe-12 Variational Method for Computing Surface Acoustic Pressure on Vibrating Bodies, Applied to Transversely Oscilliating Disks Wu, X.F.;Pierce, A.D.;Ginsberg, J.H.
  10. Aiaa Aeroacoustic Conference at Long Beach Anaysis of Sound Propagation and Radiation In A Curved Duct using a Boundary Integral Method: Comparison with Experiment MalbeQui, P.;Glandier, C;Reynier, C.
  11. Aiaa J. v.26 Diffracting Open-Ended Pipe Treated as a Lifting Surface Marinez, R.
  12. J. Acous. Soc. Am. v.87 A Boundary Integral Formulation for Thin-Walled Shapes of Revolution Martinez, R.
  13. J. Acoust. Soc. Am. v.90 On the Numerical Implementation of Cauchy Principal Value Integral to Insure a Unique Solution for Acoustic Radiation and Scattering Wu, T.W.;Seybert, A.F.;Wan, G.C.
  14. J. Acoust. Soc. Am. v.91 Solving Knife-Edge Scattering Problems using Singular Boundary Elements Seybert, A.F.;Jia, Z.H.;Wu, T.W.
  15. Int. J. Num. Meth. Eng. v.9 Crack Tip Finite Elements are Unnecessary Henshell, D.
  16. Int. J. Num. Meth. Eng. v.10 On the Use of Isoparametric Finite Elements in Linear Fracture Mechanics Barsoum, R.