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Estimation of vibration level of ship hull at various design stage

Research Project

Project/Area Number 11555258
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field 船舶工学
Research InstitutionOsaka University

Principal Investigator

HAYASHI Shigehiro  Osaka University, Graduate School of Engineering, Associate Professor, 大学院・工学研究科, 助教授 (60263216)

Co-Investigator(Kenkyū-buntansha) SYTJRI Hideyuki  Hitaci-Zosen Co. Ltd., Technical Center; Manager (Researcher), 課長(研究員)
TOMITA Yasumitsu  Osaka University, Graduate School of Engineering; Professor, 大学院・工学研究科, 教授 (30029251)
YAO Tetsuya  Osaka University, Graduate School of Engineering, Professor, 大学院・工学研究科, 教授 (20029284)
YOSHIKAWA Takao  Kawasaki Heavy Industry Co. Ltd., Technical Center, Manager (Researcher), 部長(研究員)
Project Period (FY) 1999 – 2002
Project Status Completed (Fiscal Year 2002)
Budget Amount *help
¥10,200,000 (Direct Cost: ¥10,200,000)
Fiscal Year 2002: ¥2,100,000 (Direct Cost: ¥2,100,000)
Fiscal Year 2001: ¥1,700,000 (Direct Cost: ¥1,700,000)
Fiscal Year 2000: ¥2,400,000 (Direct Cost: ¥2,400,000)
Fiscal Year 1999: ¥4,000,000 (Direct Cost: ¥4,000,000)
KeywordsShip / Vibration / Design / Beam Model / Fluid-Structure Coupled Vibration Analysis / Fluid Model / Fine Mesh Model / Optimization / 流体-構造連成振動解析 / 設計初期段階
Research Abstract

1. Ship Hull has been modeled by using isotropic shell element and about 4 longitudinal members have been expressed as a beam element. The size of shell element is smaller than the area surrounded with girder and floor. It is well known that too many eigenvalues and local vibrations are obtained if the mesh size is small. But by using this model the number of eigenvalues is not so much, and mesningless local vibrations do not appear. It was indicated that the progress of capability of computer allow keeping the model constitution of ship hull aboveboard.
2. In the case of using large mesh at ship hull, it is recommended to attach added mass matrix calculated with fine BEM mesh to the hull model. In the opposite case, it is recommended to use FEM hull mesh to calculate added mass matrix, because we can reduce the person-hour to construct hull mesh.
3. The frequency response analysis have been done by using modal damping ratio of existing ship.
4. RMS-sensitivity has been formulated corresponding to ISO6954, by using engine inertia force which has multiple cylinders and frequencies.
5. Peak-sensitivity has been formulated corresponding to ISO6954, by using RMS-sensitivity. The design variables are the weight of mass attached to ship hull. The vibration level at multiple points of ship hull are adopted as constraint function and/or objective function. The optimum solution was obtained even in such a severe condition.

Report

(5 results)
  • 2002 Annual Research Report   Final Research Report Summary
  • 2001 Annual Research Report
  • 2000 Annual Research Report
  • 1999 Annual Research Report

Research Products

(26 results)

All Other

All Publications (26 results)

  • [Publications] 船木俊彦, 林茂弘, MUKHERJEE Sunil, 和泉徳喜: "Fundamental Study on the Optimization Method for Vibration Level (Development of the Optimization Method for Vibration in a Superstructure)"Proceedings of the 9th (1999) International Offshore and Polar Engineering Conference (ISOPE-99). vol.4. 307-314 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 船木俊彦, 林茂弘: "Fundamental Study on Damping Matrix by Fluid Viscosity for Vibration Analysis of Floating Structures, Proceedings of the 9th (1999) International Offshore and Polar Engineering"Proceedings of the 9th (1999) International Offshore and Polar Engineering Conference (ISOPE-99). vol.4. 299-306 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] MUKHERJEE Sunil, 林茂弘, 冨田 康光: "Stress Analysis of Openings(Slots) for Longitudinals in Ship Structures by Finite Element Method"関西造船協会誌. vol.232. 93-99 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 林茂弘, 木曽孝, 満島誠, 鷹見賢司: "縮小付加質量マトリクスにおける回転ベクトルの影響に関する研究(数値解析を援用した回転ベクトル推定法の利用)"日本造船学会論文集. vol.186. 413-419 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 林茂弘, 古池健太, 石田勝己: "船舶の振動レベル推定に関する基礎的研究(水中同時曲線適合手法の開発)"日本造船学会論文集. vol.186. 421-429 (1999)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] MUKHERJEE Sunil, 林茂弘: "On Redesign of Ship Structures Locally by Variational Formulation"関西造船協会誌. vol.233. 93-98 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 林茂弘, 和泉徳喜, 木村健太郎: "振動レベル最適化に関する研究(船体居住区に生じる振動レベルの最適化)"関西造船協会誌. vol.233. 87-92 (2000)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 林茂弘, 木村健太郎, 榊田和宏, 矢尾哲也: "ISO新基準に対応した振動レベル最適化手法に関する研究(各種次数成分を含んだ複数気筒エンジンによる励振を考慮した解析)"日本造船学会論文集. 190号. 615-624 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 林茂弘, 守本賢一, 矢尾哲也: "振動境界層における散逸エネルギーに関する研究(回転楕円体の無限流体中における低次モード解析解の導出)"日本造船学会論文集. 190号. 607-613 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Shigehiro Hayashi, Kazuhiro Sakakida, Kenichiro Terada, Tetsuya Yao: "A study on The Optimization Method of Vibration Level for The New Standard of ISO6954"Proceedings of The Twelfth (2002) International Offshore and Polar Engineering Conference Kitakyushu, Japan, May26-31, 2002. ISBN 1-88065 3-58-3. 472-479 (2002)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Toshihiko FUNAKI, Shigehiro HAYASHI, Kenneth Sunil MUKHERJEE, Naruyoshi IZUMI: "Fundamental Study on the Optimization Method for Vibration Level (Development of the Optimization Method for Vibration in a Superstructure)"Proceedings of the 9th (1999) International Offshore and Polar Engineering Conference (ISOPE-99). vol.4. 307-314 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Toshihiko FUNAKI, Shigehiro HAYASHI: "Fundamental Study on Damping Matrix by Fluid Viscosity for Vibration Analysis of Floating Structures"Proceedings of the 9th (1999) International Offshore and Polar Engineering Conference (ISOPE-99). vol.4. 299-306 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kenneth Sunil MUKHERJEE, Shigehiro HAYASHI, Yasumitsu TOMITA: "Stress Analysis of Openings(Slots) for Longitudinals in Ship Structures by Finite Element Method"Journal of the Kansai Society of Naval Architects, Japan. vol.232. 93-99 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Shigehiro HAYASHI, Takashi KISO, Makoto MITSUSHIMA, Kenji TAKAMI: "A Study on the Effect of Rotation Vector upon Reduced Added Mass Matrix (Utilization of Estimate of Rotation Vector by Use of Numerical Analysis) in Japanese"Journal of the Society of Naval Architects of Japan. vol.186. 413-419 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Shigehiro HAYASHI, Kenta KOIKE, Katsumi ISHIDA: "Fundamental Study on the New Method to Estimite Vibration Level on a Ship (Development of Way of Curve Fit only by using data in the Different Water Depth) in Japanese"Journal of the Society of Naval Architects of Japan. vol.186. 421-429 (1999)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Kenneth Sunil MUKHERJEE, Shigehiro HAYASHI: "On Redesign of Ship Structures Locally by Variational Formulation"Journal of the Kansai Society of Naval Architects, Japan. vol.233. 93-98 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Shigehiro HAYASHI, Naruyoshi IZUMI, Kentaro KIMURA: "Study on the Optimization Method for Vibration Level (Optimization for Vibration Level in the Superstructure of the Ship) in Japanese"Journal of the Kansai Society of Naval Architects, Japan. vol.233. 87-92 (2000)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Shigehiro HAYASHI, Kentaro KIMURA, Kazuhiro SAKAKITA, Tetsuya YAO: "Study on the Optimization Method of Vibration Level for The New Standard of ISO6954 (The Vibration Analysis by Using Engine Inertia Forces whic has Multiple Component of Cycle) in Japanese"Journal of the Society of Naval Architects of Japan. vol.190. 615-624 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Shigehiro HAYASHI, Kenichi MORIMOTO, Tetsuya YAO: "A Study of Dissipation Energy in the Periodic Boundary Layer (An Analytic Solution of Lower Mode Vibration of Ellipsoid in An Infinite Water) in Japanese"Journal of the Society of Naval Architects of Japan. vol.90. 607-613 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Shigehiro HAYASHI, Kazuhiro SAKAKITA, Kenichiro TERADA: Proceedings of the 12th. (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] Tetsuya YAO: "A study on The Optimization Method of Vibration Level for The New Standard of ISO6954"International Offshore and Polar Engineering Conference (ISOPE-2002). vol.4. 472-479 (2002)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2002 Final Research Report Summary
  • [Publications] 林茂弘, 木村健太郎, 榊田和宏, 矢尾哲也: "ISO新基準に対応した振動レベル最適化手法に関する研究(各種次数成分を含んだ複数気筒エンジンによる励振を考慮した解析)"日本造船学会論文集. 190号. 615-624 (2001)

    • Related Report
      2002 Annual Research Report
  • [Publications] 林茂弘, 守本賢一, 矢尾哲也: "振動境界層における散逸エネルギーに関する研究(回転楕円体の無限流体中における低次モード解析解の導出)"日本造船学会論文集. 190号. 607-613 (2001)

    • Related Report
      2002 Annual Research Report
  • [Publications] Shigehiro Hayashi, Kazuhiro Sakakida, Kenichiro Terada, Tetsuya Yao: "A study on The Optimization Method of Vibration Level for The New Standard of ISO6954"Proceedings of The Twelfth (2002) International Offshore and Polar Engineering Contference Kitakyushu, Japan, May26-31, 2002. ISBN1-880653-58-3. 472-479 (2002)

    • Related Report
      2002 Annual Research Report
  • [Publications] 林茂弘, 木村健太郎, 榊田和宏, 矢尾哲也: "ISO新基準に対応した振動レヘル最適化手法に関する研究(各種次数成分を含んだ複数気筒エンジンによる励振を考慮した解析)"日本造船学会論文集. 190号. 615-624 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] 林茂弘, 守本賢一, 矢尾哲也: "振動境界層における散逸エネルギーに関する研究(回転楕円体の無限流体中における低次モード解析解の導出)"日本造船学会論文集. 190号. 607-613 (2001)

    • Related Report
      2001 Annual Research Report

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Published: 1999-03-31   Modified: 2016-04-21  

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