十字形試験片を用いた二軸応力試験の<br>数値解析的検証

• 花房 泰浩

  ユニバーサル製缶（株） 開発部

• 瀧澤 英男

  三菱マテリアル（株） 中央研究所

• 桑原 利彦

  東京農工大学 共生科学技術研究院 先端機械システム部門

書誌事項

タイトル別名

• Numerical Verification in Biaxial Stress Tests<br>Using Cruciform Specimen
• ジュウ ジケイ シケンヘン オ モチイタ 2ジク オウリョク シケン ノ スウチ カイセキテキ ケンショウ

抄録

A method of determining stress measurement error in biaxial tensile tests using a cruciform specimen is proposed. The cruciform specimen is assumed to be fabricated from a flat sheet by laser machining and to have uniform thickness and slits in its arms. Using finite element analysis with the von Mises yield function, the optimum dimensions of the cruciform specimen and the strain measurement point that minimize the stress measurement error are determined. The following conclusions are drawn. (i) When the side length of the test area of the cruciform specimen is B, the thickness of the test material should be less than 0.08 B. (ii) The dimensions of the cruciform specimen should be N≥7,L≥B,ω_S≤0.01B and 0.0034≤R/B≤0.1, where N is the number of slits, L is the length of slits in the arms, ω_S is the width of slits and R is the corner radius at the junction of the arm and test area. (iii) Strain components in the test area should be measured on the centerline of the specimen parallel to the maximum principal stress direction at a position approximately 0.35B from the center of the specimen. The stress measurement error is estimated to be less than 2% when the optimum conditions above are adopted.

収録刊行物

• 塑性と加工

  塑性と加工 52 (601), 282-287, 2011

  一般社団法人 日本塑性加工学会

キーワード

• sheet metal forming
• FEM
• biaxial tensile test
• cruciform specimen
• anisotropy
• yield function

詳細情報

• CRID: 1390001206498897664
• NII論文ID: 10027963136
• NII書誌ID: AN00135062
• DOI: 10.9773/sosei.52.282
• ISSN: 18820166
• ISSN: 00381586
• ISSN: http://id.crossref.org/issn/00381586
• NDL書誌ID: 11021903
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I11021903
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可