Identifying elasto-plastic material properties by strain measurement with digital image correlation

• Project/Area Number: 26420024
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Materials/Mechanics of materials
• Research Institution: Aoyama Gakuin University
• Principal Investigator: Yoneyama Satoru 青山学院大学, 理工学部, 教授 (90306499)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000); Fiscal Year 2014: ¥2,470,000 (Direct Cost: ¥1,900,000、Indirect Cost: ¥570,000)
• Keywords: 逆問題 / 材料特性 / 弾塑性 / 画像相関法 / ひずみ測定

Outline of Final Research Achievements

A method for inversely identifying elasto-plastic material properties from displacement fields measured by global digital image correlation. In order to avoid the accumulation of measurement errors, total strain theory is used as a constitutive equation. A peicewise virtual fields method with a finite element mesh is sued for the implementation of the inverse analysis. The effectiveness of the proposed method is demonstrated by identifying the material proper-ties of a pure aluminum specimen from the displacement fields. Results show that the stress-strain relation after yielding can be evaluated from a single set of displacement fields under a single load but better results are obtained when multiple displacement fields under various loads are used as input data.

Research Products

• [Journal Article] Identification of plastic stress-strain parameters by global digital image correlation, the virtual fields method and the total strain theory (2016)
  • Author(s): Hamada, S., Jinno, K., Arikawa, S., and Yoneyama, S.
  • Journal Title: Mechanical Engineering Journal Volume: 3 Issue: 6 Pages: 16-00106-16-00106
  • DOI: 10.1299/mej.16-00106
  • NAID: 130005250555
  • ISSN: 2187-9745
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Identification of Elasto-plastic Material Properties Using Virtual Fields Method with Global Digital Image Correlation (2016)
  • Author(s): 福田明紘, 濱田 惇, 有川秀一, 米山 聡
  • Journal Title: Journal of the Japanese Society for Experimental Mechanics Volume: 16 Issue: 3 Pages: 234-242
  • DOI: 10.11395/jjsem.16.234
  • NAID: 130005266468
  • ISSN: 1346-4930, 1884-4219
  • Peer Reviewed / Open Access
• [Journal Article] Identification of Elasto-plastic Material Properties with Full-field Surface Displacement Measurements (2014)
  • Author(s): Jinno, K., Arikawa, S., Yoneyama, S., Watanabe, Y., Asai, T., Shiokawa, K. and Yamashita, M.
  • Journal Title: Journal of the Japanese Society for Experimental Mechanics Volume: 14 Issue: Special_Issue Pages: s147-s152
  • DOI: 10.11395/jjsem.14.s147
  • NAID: 130004687799
  • ISSN: 1346-4930, 1884-4219
  • Peer Reviewed / Open Access
• [Presentation] 逆問題解析による弾塑性材料特性の同定方法の確立 (2016)
  • Author(s): 福田明紘, 濱田 惇, 有川秀一, 米山 聡
  • Organizer: 日本実験力学会2016年度年次講演会
  • Place of Presentation: 近畿大学（東大阪市）
  • Year and Date: 2016-09-01
• [Presentation] Identification of Elasto-plastic Material Properties from Measured Displacement Fields Using the Virtual Fields Method with Total Strain Theory (2015)
  • Author(s): S. Hamada, K. Jinno, A. Arikawa and S. Yoneyama
  • Organizer: International Conference on Advanced Technology in Experimental Mechanics
  • Place of Presentation: 愛知県豊橋市
  • Year and Date: 2015-10-07
  • Int'l Joint Research
• [Presentation] 画像相関法を用いた変位場測定と弾塑性材料特性の逆解析 (2015)
  • Author(s): 濱田 惇, 有川秀一, 米山 聡
  • Organizer: 日本機械学会東海支部第64期総会・講演会
  • Place of Presentation: 中部大学（愛知県春日井市）
  • Year and Date: 2015-03-14 – 2015-03-15
• [Remarks] Experimental Mechanics Research Group
  • URL: http://www.me.aoyama.ac.jp/~yoneyama/index.html