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Development of Numerical Estimation Technique for Production of Welded Structure with High Accuracy

Research Project

Project/Area Number 15206080
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section一般
Research Field Material processing/treatments
Research InstitutionOsaka University

Principal Investigator

MURAKAWA Hidekazu  Osaka University, Joining and Welding Research Institute, Professor, 接合科学研究所, 教授 (60166270)

Co-Investigator(Kenkyū-buntansha) SERIZAWA Hisashi  Osaka University, Joining and Welding Research Institute, Associate Professor, 接合科学研究所, 助教授 (20294134)
TSUMURA Takuya  Osaka University, Joining and Welding Research Institute, Research Associate, 接合科学研究所, 助手 (00283812)
TANAKA Manabu  Osaka University, Joining and Welding Research Institute, Associate Professor, 接合科学研究所, 助教授 (20243272)
OSAWA Naoki  Osaka University, School of Engineering, Professor, 工学研究科, 教授 (90252585)
OKUMOTO Yasuhisa  Kinki University, School of Engineering, Professor, 工学部, 教授 (50247962)
柴原 正和  大阪府立大学, 工学研究科, 助手 (20350754)
牛尾 誠夫  大阪大学, 接合科学研究所, 教授 (80029248)
Project Period (FY) 2003 – 2006
Project Status Completed (Fiscal Year 2006)
Budget Amount *help
¥49,270,000 (Direct Cost: ¥37,900,000、Indirect Cost: ¥11,370,000)
Fiscal Year 2006: ¥5,330,000 (Direct Cost: ¥4,100,000、Indirect Cost: ¥1,230,000)
Fiscal Year 2005: ¥22,360,000 (Direct Cost: ¥17,200,000、Indirect Cost: ¥5,160,000)
Fiscal Year 2004: ¥14,560,000 (Direct Cost: ¥11,200,000、Indirect Cost: ¥3,360,000)
Fiscal Year 2003: ¥7,020,000 (Direct Cost: ¥5,400,000、Indirect Cost: ¥1,620,000)
KeywordsWelding Distortion / Finite Element Method / Thermal Elastic Plastic Analysis / Nonlinearity / Parallelization / 固有変形 / 界面要素 / 溶接順序 / 逆解析 / 残留応力
Research Abstract

Most of the construction processes in the welded structures is the thermal working, which is phenomenally a kind of unsteady and nonlinear behavior. An objective of this research was to visualize and reveal such a nonlinear behavior by using various simulation methods based on the computational science. The main results in this study were as follows;
(1) The inherent deformation method, in which the inherent deformation is introduced into the elastic finite element method (FEM) as the initial strain, is one of the effective methods to predict the plate panel welded structures such as ships and bridges. Where, the values of the inherent deformations for various weld joints must be known beforehand. So, in this study, a simple and efficient method to estimate inherent deformation of typical weld joints by using inverse analysis was developed and its validity was revealed through the examinations for joint specimens and large structures.
(2) FEM is a powerful tool to predict the welding residual stresses and deformations. However, the three-dimensional (3D) thermal-elastic-plastic FE analysis requires very long computational times and most of the previous computations using 3D-FEM were limited to simple problems such as a bead-on plate welding and a butt joint welding. So, in this research, an iterative substructure method was developed as a method to reduce the computational time in 3D analysis based on the understanding that the welding problem is a strong nonlinear transient problem and the nonlinearity in welding is much localized. By using this method, the computing time was accelerated more than 10 times and the welding distortion of a part of the practical structure under a single pass welding can be analyzed. Also, it was succeeded to analyze and quantitatively predict the welding distortion of a part of nuclear reactor after multi pass welding.

Report

(5 results)
  • 2006 Annual Research Report   Final Research Report Summary
  • 2005 Annual Research Report
  • 2004 Annual Research Report
  • 2003 Annual Research Report
  • Research Products

    (36 results)

All 2007 2006 2005 2004 2003 Other

All Journal Article (30 results) Publications (6 results)

  • [Journal Article] Actual Application of FEM to Analysis of Large Scale Mechanical Problem in Welding2007

    • Author(s)
      H.Nishikawa
    • Journal Title

      Science and Technology of Welding and Joining Vol. 12 No. 2

      Pages: 147-152

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Actual Application of FEM to Analysis of Large Scale Mechanical Problem in Welding2007

    • Author(s)
      H.Nishikawa
    • Journal Title

      Science and Technology of Welding and Joining Vol.12 No.2

      Pages: 147-152

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Actual Application of FEM to Analysis of Large Scale Mechanical Problem in Welding2007

    • Author(s)
      H.Nishikawa
    • Journal Title

      Science and Technology of Welding and Joining Vol. 12, No. 2

      Pages: 147-152

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Numerical Study on Edge Effect in Transverse Shrinkage under Line Heating2006

    • Author(s)
      A.Vega
    • Journal Title

      Proceedings of the 20th Asian Technical Exchange and Advisory Meeting on Marine Structures (TEAM 2006)

      Pages: 283-290

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 温度依存型界面要素法を用いたT継手完全溶け込み溶接時における梨形ビード割れの発生予測2006

    • Author(s)
      柴原正和
    • Journal Title

      溶接構造シンポジウム2006講演論文集 Vol. 1

      Pages: 287-294

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Thermal-Elastic-Plastic Simulation to Evaluate Effectiveness of Fixture and Pre-strain for Reduction of Welding Distortion2006

    • Author(s)
      L.Zhang
    • Journal Title

      溶接構造シンポジウム2006講演論文集 Vol. 2

      Pages: 569-575

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 大規模溶接シミュレーション手法の高速化に関する検討2006

    • Author(s)
      西川弘泰
    • Journal Title

      溶接構造シンポジウム2006講演論文集 Vol. 2

      Pages: 629-636

    • Related Report
      2006 Annual Research Report
  • [Journal Article] 大規模溶接シミュレーション手法による溶接変形予測2006

    • Author(s)
      西川弘泰
    • Journal Title

      溶接技術 Vol. 54, No. 12

      Pages: 80-86

    • Related Report
      2006 Annual Research Report
  • [Journal Article] Computational Welding Mechanics for Practical Applications2005

    • Author(s)
      H.Murakawa
    • Journal Title

      Proc. Inter. Workshop on Development & Advancement of Computational Mechanics

      Pages: 14-25

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Computational Welding Mechanics for Practical Applications2005

    • Author(s)
      H.Murakawa
    • Journal Title

      Proc.Inter.Workshop on Development & Advancement of Computational Mechanics

      Pages: 14-25

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Computational Welding Mechanics for Practical Applications2005

    • Author(s)
      H.Murakawa
    • Journal Title

      The Proceedings of International Workshop on Development and Advancement of Computational Mechanics

      Pages: 14-25

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Ultra Large Scale FE Computation Using Fractal Multi-Grid Method2005

    • Author(s)
      H.Murakawa
    • Journal Title

      Advances in Computational & Experimental Engineering and Science 2005, Proceedings of the 2005 International Conference on Computational & Experimental Engineering and Sciences (ICCES'05) Chapter 2

      Pages: 228-233

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Fractal Multi-Grid Method for Ultra Large Scale FE Computation2005

    • Author(s)
      H.Murakawa
    • Journal Title

      Proceedings of the 19th Asian Technical Exchange and Advisory Meeting on Marine Structures

      Pages: 216-223

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Fast Computational Scheme for Large Scale Nonlinear Transient Problems in Welding Mechanics2005

    • Author(s)
      H.Murakawa
    • Journal Title

      Advances in Computational & Experimental Engineering and Sciences 2005, Proceedings of the 2005 International Conference on Computational & Experimental Engineering and Sciences (ICCES'05) Chapter 2(CD-ROM)

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Development of 3-Dimensional High-speed FEM for Welding Problems2005

    • Author(s)
      H.Serizawa
    • Journal Title

      Proceedings of the International Conference on Welding Science and Engineering, 2005 (WSE'05)

      Pages: 240-246

    • Related Report
      2005 Annual Research Report
  • [Journal Article] Simulation of Multi-pass Welding Using Iterative Substructure Method2005

    • Author(s)
      S.Itoh
    • Journal Title

      Proceedings of the 19th Asian Technical Exchange and Advisory Meeting on Marine Structures

      Pages: 200-207

    • Related Report
      2005 Annual Research Report
  • [Journal Article] A Simple Measuring Method of Welding Inherent Deformation Using Inverse Analysis2004

    • Author(s)
      W.Liang
    • Journal Title

      Proceedings of the 14th International Offshore and Polar Engineering Conference Vol. IV

      Pages: 148-153

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Theoretical Prediction of Welding Distortion Considering Positioning and Gap Between Parts2004

    • Author(s)
      D.Deng
    • Journal Title

      International Journal of Offshore and Polar Engineering Vol. 14 No. 2

      Pages: 138-144

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 3D Thermal-elastic-plastic FEM Analysis for Predicting Residual Stress and Deformation under Multi-pass Welding2004

    • Author(s)
      H.Nishikawa
    • Journal Title

      Proceedings of the 14th International Offshore and Polar Engineering Conference Vol. IV

      Pages: 126-132

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] A Simple Measuring Method of Welding Inherent Deformation Using Inverse Analysis2004

    • Author(s)
      W.Liang
    • Journal Title

      Proceedings of the 14th International Offshore and Polar Engineering Conference Vol.IV

      Pages: 148-153

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Theoretical Prediction of Welding Distortion Considering Positioning and Gap Between Parts2004

    • Author(s)
      D.Deng
    • Journal Title

      International Journal of Offshore and Polar Engineering Vol.14 No.2

      Pages: 138-144

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] 3D Thermal-elastic-plastic FEM Analysis for Predicting Residual Stress and Deformation under Multi-pass Welding2004

    • Author(s)
      H.Nishikawa
    • Journal Title

      Proceedings of the 14th International Offshore and Polar Engineering Conference Vol.IV

      Pages: 126-132

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Three-dimensional Thermal-elastic-plastic FEM Analysis for Predicting Residual Stress and Deformation under Multi-pass Welding2004

    • Author(s)
      H.Nishikawa, I.Oda, M.Shibahara, H.Serizawa, H.Murakawa
    • Journal Title

      Proceedings of the 14th International Offshore and Polar Engineering Conference Vol.IV

      Pages: 126-132

    • Related Report
      2004 Annual Research Report
  • [Journal Article] A Simple Measuring Method of Welding Inherent Deformation Using Inverse Analysis2004

    • Author(s)
      W.Liang, S.Sone, H.Serizawa, H.Murakawa
    • Journal Title

      Proceedings of the 14th International Offshore and Polar Engineering Conference Vol.IV

      Pages: 148-153

    • NAID

      110003880246

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 逆解析による溶接固有変形の計測法に関する研究2004

    • Author(s)
      梁 偉, 曽根慎二, 芹澤 久, 村川英一
    • Journal Title

      関西造船協会論文集 第242号

      Pages: 89-96

    • NAID

      110003880246

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Prediction of Welding Distortion during the Assembly Process of Thin Plate Structures(2nd Report)-Influence of Welding Sequence on Welding Distortion-2004

    • Author(s)
      D.Deng, H.Serizawa, H.Murakawa
    • Journal Title

      関西造船協会論文集 第242号

      Pages: 97-104

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 高効率かつ高精度な溶接シミュレーション手法の研究2004

    • Author(s)
      西川弘泰, 尾田 勇, 芹澤 久, 村川英一
    • Journal Title

      溶接構造シンポジウム2004講演論文集

      Pages: 179-184

    • Related Report
      2004 Annual Research Report
  • [Journal Article] 薄板構造物の溶接変形に及ぼす溶接順序の影響2004

    • Author(s)
      〓 徳安, 芹澤 久, 村川英一
    • Journal Title

      溶接構造シンポジウム2004講演論文集

      Pages: 425-432

    • Related Report
      2004 Annual Research Report
  • [Journal Article] Theoretical Prediction for High Quality Products and Reliable Assembly Process2003

    • Author(s)
      H.Murakawa
    • Journal Title

      Transactions of JWRI Vol. 32 No. 1

      Pages: 207-212

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Journal Article] Theoretical Prediction for High Quality Products and Reliable Assembly Process2003

    • Author(s)
      H.Murakawa
    • Journal Title

      Transactions of JWRI Vol.32 No.1

      Pages: 207-212

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2006 Final Research Report Summary
  • [Publications] H.Murakawa: "Theoretical Prediction for High Quality Products and Reliable Assembly Process"Transactions of JWRI. Vol.32 No.1. 207-212 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] H.Murakawa: "Simulation of Resistance Welding for Selection of Optimum Welding Conditions and Process Control"Transactions of JWRI. Vol.32 No.1. 215-218 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] Y.Wu, H.Serizawa, H.Murakawa: "Numerical Simulation of Fuzzy Control for Resistance Spot Welding by Monitoring Electrode Temperature"Transactions of JWRI. Vol.32 No.2. 277-282 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] D.Deng, Y.Luo, H.Serizawa, M.Shibahara, H.Murakawa: "Numerical Simulation of Residual Stress and Deformation Considering Phase Transformation Effect"Transactions of JWRI. Vol.32 No.2. 325-334 (2003)

    • Related Report
      2003 Annual Research Report
  • [Publications] H.Nishikawa, I.Oda, M.Shibahara, H.Serizawa, H.Murakawa: "Three-dimensional Thermal-elastic-plastic FEM Analysis for Predicting Residual Stress and Deformation Under Multi-pass Welding"Proceedings of the 14th International Offshore and Polar Engineering Conference. (CD-ROM). (2004)

    • Related Report
      2003 Annual Research Report
  • [Publications] W.Lian, S.Sone, H.Serizawa, H.Murakawa: "A Simple Measuring Method of Welding Inherent Deformation Using Inverse Analysis"Proceedings of the 14th International Offshore and Polar Engineering Conference. (CD-ROM). (2004)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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