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2005 Fiscal Year Final Research Report Summary

Evaluation of complex time-dependent stress field and reduction of loss energy for viscoelastic laminated tires

Research Project

Project/Area Number 15360060
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section一般
Research Field Materials/Mechanics of materials
Research InstitutionAoyama Gakuin University

Principal Investigator

TAKASHI Masahisa  Aoyama Gakuin University, College of Science and Engineering, Professor, 理工学部, 教授 (60082799)

Co-Investigator(Kenkyū-buntansha) MISAWA Akihiro  Kanagawa Institute of Technology, Department of Mechanical Engineering, Professor, 機械工学科, 教授 (00148123)
MURASAWA Go  Yamagata University, Faculty of Engineering, Assistant, 工学部, 助手 (90348467)
YONEYAMA Satoshi  Osaka Prefecture University, College of Engineering, Assistant Professor, 大学院・工学研究科, 講師 (90306499)
TANAKA Hideaki  Aoyama Gakuin University, College of Science and Engineering, Assistant, 理工学部, 助手 (70082865)
CHO Hideo  Aoyama Gakuin University, College of Science and Engineering, Assistant, 理工学部, 助手 (60296382)
Project Period (FY) 2003 – 2005
Keywordsstrength of materials / viscoelastic materials / loss energy / experimental stress analysis / optical measurement
Research Abstract

Techniques for stress/strain analysis in viscoelastic materials give the various knowledge to design composite structures of tires and to reduce running resistance of tires. In the present research, digital holography and digital image correlation method were developed to analysis the stress/strain field in viscoelastic materials. The experimental results show that the digital holography has accuracies of 30nm in displacement measurement and of 7.5×10^<-6> in strain measurement. These accuracies are enough to measure the displacement field in viscoelastic materials. And, the experimental data obtained by digital image correlation method shows that the method can measure the full field displacement in viscoelastic materials in real time, even if the materials are subjected large deformation. These developed techniques were also applied to fracture mechanics and the authors showed that the techniques are useful to determine stress intensity factors. On the other hand, the authors developed experimental-numerical hybrid technique because it is difficult to analyze stress state in viscoelastic material only from experimental displacement data. In the developed hybrid technique, finite element model of viscoelastic object is constructed, and then, the measured experimental displacement data is inputted on the boundary of the constructed finite element model. Consequently, the stress and strain fields in the viscoelastic object are simultaneously calculated. The results show that the stress and strain fields in the viscoelastic object under non-proportional loading can be analyzed exactly by the proposed technique.

  • Research Products

    (11 results)

All 2005 Other

All Journal Article (11 results)

  • [Journal Article] Modified Intelligent Hybrid Technique Reducing Experimental Error over Entire Target Area2005

    • Author(s)
      M.Fujikawa, M.Takashi
    • Journal Title

      Experimental Mechanics Vol.45, No.6

      Pages: 541-549

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 解析対象領域境界の実験誤差を低減する修正インテリジエントハイブリッド法2005

    • Author(s)
      藤川正毅, 隆雅久
    • Journal Title

      日本機械学会論文集(A編) 71巻711号

      Pages: 1480-1487

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 位相シフトデジタルホログラフィを用いたコースティック像の撮影2005

    • Author(s)
      坂上賢一, 勝田真司, 隆雅久
    • Journal Title

      実験力学 5巻4号

      Pages: 373-376

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 弾性解析領域の境界条件を再構築する実駿-数値ハイブリッド解析2005

    • Author(s)
      降川正毅, 隆雅久
    • Journal Title

      実験力学 5巻2号

      Pages: 157-163

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] 位相シフトイメージプレーンデジタルホログラフィによる変位・変位勾配の計測2005

    • Author(s)
      坂上賢一, 大瀧博貴, 隆雅久
    • Journal Title

      実験力学 6巻2号(印刷中)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Modified Intelligent Hybrid Technique for Experimental Error Reduction on Boundary of Concerned Area2005

    • Author(s)
      M.Fujikawa, M.Takashi
    • Journal Title

      Transaction of the Japan Society of Mechanical Engineers Series A Vol.71, No.711

      Pages: 1480-1487

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] Recording Caustic Images by means of Phase-Shifting Digital Holography2005

    • Author(s)
      K.Sakaue, S.Katsuta, M.Takashi
    • Journal Title

      Journal of JSEM Vol.5, No.4

      Pages: 373-376

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] An Experimental and Numerical Hybrid Technique for Reconstructing Boundaru Condition in Elastic Analysis2005

    • Author(s)
      M.Fujikawa, M.Takashi
    • Journal Title

      Journal of JSEM Vol.5, No.2

      Pages: 157-163

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] An Experimental and Numerical Hybrid Technique for Reconstructing Boundary Condition in Elastic Analysis

    • Author(s)
      M.Fujikawa, M.Takashi
    • Journal Title

      The Journal of Strain Analysis for Engineering Design (印刷中)

    • Description
      「研究成果報告書概要(和文)」より
  • [Journal Article] Measurement of Displacement and Displacement Gradient by means of Phase-Shifting Image Plane Digital Holography

    • Author(s)
      K.Sakaue, H.Otaki, M.Takashi
    • Journal Title

      Journal of JSEM (in press)

    • Description
      「研究成果報告書概要(欧文)」より
  • [Journal Article] An Experimental and Numerical Hybrid Technique for Reconstructing Boundary Condition in Elastic Analysis

    • Author(s)
      M.Fujikawa, M.Takashi
    • Journal Title

      The Journal of Strain Analysis for Engineering Design (in press)

    • Description
      「研究成果報告書概要(欧文)」より

URL: 

Published: 2007-12-13  

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