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Establishment of a novel method for strength estimation of heterogeneous materials by multiscale stochastic stress analysis

Research Project

Project/Area Number 16K05995
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Materials/Mechanics of materials
Research InstitutionKindai University

Principal Investigator

Sakata Sei-ichiro  近畿大学, 理工学部, 教授 (80325042)

Project Period (FY) 2016-04-01 – 2021-03-31
Project Status Discontinued (Fiscal Year 2020)
Budget Amount *help
¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000)
Fiscal Year 2020: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2019: ¥390,000 (Direct Cost: ¥300,000、Indirect Cost: ¥90,000)
Fiscal Year 2018: ¥130,000 (Direct Cost: ¥100,000、Indirect Cost: ¥30,000)
Fiscal Year 2017: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000)
Fiscal Year 2016: ¥3,380,000 (Direct Cost: ¥2,600,000、Indirect Cost: ¥780,000)
Keywordsマルチスケール確率応力解析 / 三次元造形材料 / 複合材料 / 不均質材料 / 強度推定 / 信頼性評価 / 多孔質材料 / 材料強度 / 不確定性伝播 / 信頼性設計 / 確率均質化解析 / 微視的ひずみ場計測 / 材料強度試験 / 微視的その場観察 / マルチスケール確率解析 / 強度評価
Outline of Final Research Achievements

In this research, apparent strength estimation of advanced heterogeneous materials such as a resin structure fabricated by the fused deposition modeling method or composites considering microscopic randomness observed in the material by the stochastic homogenization method and the multiscale stochastic stress analysis method is attempted. In particular, for the purpose of validation of the proposed method, probabilistic properties of microscopic representative sizes are identified by experimental observations from a set of actually fabricated specimens, and those are reflected to the analysis.
From the comparison between the numerical and experimental results, the proposed method gives a good estimation of the probabilistic characteristics of the homogenized elastic properties, while the estimation error in the apparent strength estimation is larger. In order to improve the computational accuracy, it is pointed out that the random field modeling of microstructure should be carried out.

Academic Significance and Societal Importance of the Research Achievements

本研究の意義は、三次元造形材料や複合材料などの先進不均質材料で構成された構造物の強度評価にコンピュータシミュレーションを用いる際に、実際には決定できない微視的なパラメータを確率変数と考えることで、より定量的かつ高精度な材料強度推定を可能とする点にある。本研究成果により、数値解析による不均質材料の材料特性推定精度が向上し、産業競争力の一助として期待できる点が社会的意義である。また、本研究成果により、不均質材料の確率均質化特性評価および強度推定に対する提案手法の利用可能性が実験的に検証された点と、より精度の高い強度推定には詳細なランダム場の同定などが必要であることが示唆された点が学術的意義である。

Report

(5 results)
  • 2020 Final Research Report ( PDF )
  • 2019 Annual Research Report
  • 2018 Research-status Report
  • 2017 Research-status Report
  • 2016 Research-status Report
  • Research Products

    (39 results)

All 2021 2020 2019 2018 2017 2016

All Journal Article (5 results) (of which Peer Reviewed: 5 results) Presentation (32 results) (of which Int'l Joint Research: 13 results) Book (2 results)

  • [Journal Article] On accuracy improvement of microscopic stress/stress sensitivity analysis with the mesh superposition method for heterogeneous materials considering geometrical variation of inclusions2020

    • Author(s)
      S. Sakata, Y. Chan and Y. Arai
    • Journal Title

      International Journal for Numerical Methods in Engineering

      Volume: 121 Issue: 3 Pages: 534-559

    • DOI

      10.1002/nme.6233

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] A local sensitivity based multiscale stochastic stress analysis of a unidirectional fiber reinforced composite material considering random location variation of multi fibers2019

    • Author(s)
      S. Sakata and T. Sakamoto
    • Journal Title

      ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems part B: Mechanical Engineering

      Volume: 5 Issue: 3

    • DOI

      10.1115/1.4043400

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stochastic Elastic Property Evaluation with Stochastic Homogenization Analysis of a Resin Structure Made Using the Fused Deposition Modeling Method2019

    • Author(s)
      S. Sakata and Y. Yamauchi
    • Journal Title

      ASCE-ASME Journal of Risk and Uncertainty in Engineering Systems part B: Mechanical Engineering

      Volume: 5 Issue: 3

    • DOI

      10.1115/1.4043398

    • Related Report
      2019 Annual Research Report
    • Peer Reviewed
  • [Journal Article] Stochastic Elastic Property Evaluation With Stochastic Homogenization Analysis of a Resin Structure Made Using the Fused Deposition Modeling Method2019

    • Author(s)
      S. Sakata and Y. Yamauchi
    • Journal Title

      ASME J. Risk Uncertainty Part B

      Volume: Accepted

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Journal Article] A Local Sensitivity-Based Multiscale Stochastic Stress Analysis of a Unidirectional Fiber-Reinforced Composite Material Considering Random Location Variation of Multifibers2019

    • Author(s)
      S. Sakata and T. Sakamoto
    • Journal Title

      ASME J. Risk Uncertainty Part B

      Volume: Accepted

    • Related Report
      2018 Research-status Report
    • Peer Reviewed
  • [Presentation] Structural Design of a Resin Structure fabricated by FDM method considering Microscopic Uncertainty2021

    • Author(s)
      S. Sakata and T. Watanabe
    • Organizer
      PMC /EMI2020
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Multiscale Stochastic Stress Analysis of Particle Reinforce Composites considering Random Location Variation of Particle with an Improved Mesh Superposition Method2021

    • Author(s)
      Y. Arai and S. Sakata
    • Organizer
      PMC /EMI2020
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Stochastic Analysis of a Specimen Fabricated by the FDM Method Considering Non-Uniform Random Variation in Microstructure2019

    • Author(s)
      Yuga Iwata and Sei-ichiro Sakata
    • Organizer
      APCOM2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Stochastic Stress Analysis of FRP considering Random Location Variation of Fibers with an Improved Mesh Superposition Method2019

    • Author(s)
      Yuki Arai and Sei-ichiroSakata
    • Organizer
      APCOM2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] On Estimation of Microscopic Maximum Stress in Unidirectional Fiber Reinforced Plastic by Machine Learning2019

    • Author(s)
      Natsunosuke Kishimoto and Sei-ichiro Sakata
    • Organizer
      APCOM2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] A Sizing Optimization of Heterogeneous Material-based Structures Considering Microscopic Random Variation2019

    • Author(s)
      Taichi Watanabe and Sei-ichiro Sakata
    • Organizer
      APCOM2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] Topology Optimization of a Resin Structure fabricated by FDM method2019

    • Author(s)
      Tomohiro Yamaguchi and Sei-ichiro Sakata
    • Organizer
      APCOM2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] ON PARAMETER ESTIMATION FOR PROBABILISTIC DISTRIBUTION OF THE MAXIMUM MICROSCOPIC STRESSES IN UNIDIRECTIONAL FIBER REINFORCED COMPOSITES AGAINST A RANDOM FIBER LOCATION VARIATION WITH THE SUCCESSIVE LOCAL SENSITIVITY ANALYSIS-BASED APPROACH2019

    • Author(s)
      Sei-ichiro Sakata and Takuro Sakamoto
    • Organizer
      UNCECOMP2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] MULTISCALE STOCHASTIC STRESS ANALYSIS OF PARTICLE REINFORCE COMPOSITES WITH A SUCCESSIVE LOCAL SENSITIVITY ANALYSIS CONSIDERING RANDOMNESS IN MULTI-PARTICLES LOCATION2019

    • Author(s)
      Yuki Arai, Sei-ichiro Sakata
    • Organizer
      UNCECOMP2019
    • Related Report
      2019 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 重合メッシュ法による不均質材料のランダムな介在物位置変動を考慮した確率応力解析2019

    • Author(s)
      新井 悠希, 坂田 誠一郎
    • Organizer
      CMD2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] 一方向ガラス繊維 / ガラス粒子 / 樹脂 三相複合材料の力学的特性に関する研究2019

    • Author(s)
      近藤 僚太, 坂田 誠一郎
    • Organizer
      M&M2019
    • Related Report
      2019 Annual Research Report
  • [Presentation] 機械学習を用いた画像認識による不均質材の微視的最大応力推定に関する研究2019

    • Author(s)
      谷口洸,坂田誠一郎
    • Organizer
      日本機械学会 関西支部第94期定時総会講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] Multiscale Stochastic Stress Analysis of FRP with a Successive Sensitivity Analysis considering Randomness in Multi Fibers Location2018

    • Author(s)
      S. Sakata and T. Sakamoto
    • Organizer
      WCCM2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] Microscopic Strain Measurement of FRP with DIC and Kriging Method2018

    • Author(s)
      Y. Arai and S. Sakata
    • Organizer
      WCCM2018
    • Related Report
      2018 Research-status Report
    • Int'l Joint Research
  • [Presentation] "材料定数が準周期的な微視構造を有する不均質材の 効率的なマルチスケール確率応力解析手法"2018

    • Author(s)
      小川貴大,坂田誠一郎
    • Organizer
      日本機械学会第31回計算力学講演会
    • Related Report
      2018 Research-status Report
  • [Presentation] 複合材料の介在物位置変動を考慮した確率応力解析のための重合メッシュ法による感度解析2018

    • Author(s)
      陳日飛,坂田誠一郎
    • Organizer
      日本機械学会M&M2018材料力学カンファレンス
    • Related Report
      2018 Research-status Report
  • [Presentation] FRP の多数の繊維の配置変動を考慮した局所近似モデルによる確率応力解析手法2018

    • Author(s)
      酒本拓朗,坂田誠一郎
    • Organizer
      日本機械学会M&M2018材料力学カンファレンス
    • Related Report
      2018 Research-status Report
  • [Presentation] Kriging-DIC と領域分割法を用いた FRP の微視ひずみ計測2018

    • Author(s)
      新井悠希,坂田誠一郎
    • Organizer
      日本機械学会M&M2018材料力学カンファレンス
    • Related Report
      2018 Research-status Report
  • [Presentation] MULTISCALE STOCHASTIC ANALYSIS OF A RESIN STRUCTURE MANUFACTURED BY THE FDM METHOD2017

    • Author(s)
      S. Sakata
    • Organizer
      UNCECOMP2017
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research
  • [Presentation] ガラス繊維/微小ガラス粒子三相複合材料の弾性特性評価に関する研究2017

    • Author(s)
      谷口洸,坂田誠一郎
    • Organizer
      日本機械学会第30回計算力学講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] 準周期的ミクロ場を考慮した複合材料の確率均質化問題における近似解法の精度向上について2017

    • Author(s)
      小川貴大,坂田誠一郎
    • Organizer
      日本機械学会第30回計算力学講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] 一方向GFRPの界面層の弾性定数と強度のばらつきを考慮したミクロ応力解析2017

    • Author(s)
      岡森祐也,坂田誠一郎
    • Organizer
      日本機械学会第30回計算力学講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] 一方向GFRPにおける複数の繊維配置変動の相互影響を考慮したマルチスケール確率応力解析2017

    • Author(s)
      酒本拓朗,坂田誠一郎
    • Organizer
      日本機械学会第30回計算力学講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] ミクロなばらつきを考慮した複合材料の重合メッシュ法による応力解析2017

    • Author(s)
      陳日飛,坂田誠一郎
    • Organizer
      日本機械学会第30回計算力学講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] 画像相関法を用いたGFRPの微小歪み場計測精度向上に関する研究2017

    • Author(s)
      新井悠希,坂田誠一郎
    • Organizer
      日本機械学会第30回計算力学講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] FDM法により作成された樹脂部材の微視的ばらつきを考慮した構造最適設計2017

    • Author(s)
      中埜幸紘,坂田誠一郎
    • Organizer
      日本機械学会第30回計算力学講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] 複合材料の複数の微視的変動を考慮した近似確率均質化解析の主成分分析を用いた精度改善について2017

    • Author(s)
      大石駿佑,坂田誠一郎
    • Organizer
      日本機械学会第30回計算力学講演会
    • Related Report
      2017 Research-status Report
  • [Presentation] 相関を有する複数変動を考慮した粒子強化複合材料の重み付き最小二乗法による近似確率均質化解析2016

    • Author(s)
      大石駿佑,坂田誠一郎
    • Organizer
      日本機械学会第29回計算力学講演会
    • Place of Presentation
      名古屋大学(名古屋)
    • Year and Date
      2016-09-22
    • Related Report
      2016 Research-status Report
  • [Presentation] 微視的ばらつきを考慮した一方向繊維強化複合積層材材料の最適設計に関する研究2016

    • Author(s)
      中埜幸紘,坂田誠一郎
    • Organizer
      日本機械学会第29回計算力学講演会
    • Place of Presentation
      名古屋大学(名古屋)
    • Year and Date
      2016-09-22
    • Related Report
      2016 Research-status Report
  • [Presentation] FDM法により作製された樹脂部材のマルチスケール確率応力解析2016

    • Author(s)
      山田晃,坂田誠一郎
    • Organizer
      日本機械学会第29回計算力学講演会
    • Place of Presentation
      名古屋大学(名古屋)
    • Year and Date
      2016-09-22
    • Related Report
      2016 Research-status Report
  • [Presentation] GFRPの複数本の繊維配置変動に対する相互影響を考慮したマルチスケール確率応力解析2016

    • Author(s)
      石田善紀,坂田誠一郎
    • Organizer
      日本機械学会第29回計算力学講演会
    • Place of Presentation
      名古屋大学(名古屋)
    • Year and Date
      2016-09-22
    • Related Report
      2016 Research-status Report
  • [Presentation] Sensitivity Analysis for Multiscale Stochastic Stress Analysis of Fiber Reinforced Composite Material Considering Fiber Location Variation2016

    • Author(s)
      S. Sakata
    • Organizer
      The 12th World Congress on Computational Mehcanics
    • Place of Presentation
      ソウル,韓国
    • Year and Date
      2016-07-24
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research
  • [Book] 炭素繊維およびその繊維複合材料における分析試験,評価解析に関する最新事例集2019

    • Author(s)
      坂田,他
    • Total Pages
      623
    • Publisher
      技術情報協会
    • ISBN
      9784861047527
    • Related Report
      2019 Annual Research Report
  • [Book] 高分子の残留応力対策2017

    • Author(s)
      坂田誠一郎,他
    • Total Pages
      480
    • Publisher
      技術情報協会
    • Related Report
      2016 Research-status Report

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Published: 2016-04-21   Modified: 2022-01-27  

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