異方性降伏関数を用いた6000系アルミニウム合金板の液圧バルジ成形シミュレーションと実験検証

DOI Web Site 被引用文献5件 参考文献33件
  • 彌永 大作
    東京農工大学大学院工学府機械システム工学専攻
  • 桑原 利彦
    東京農工大学大学院工学研究院先端機械システム部門
  • 上間 直幸
    住友軽金属工業株式会社研究開発センター
  • 浅野 峰生
    住友軽金属工業株式会社研究開発センター

書誌事項

タイトル別名
  • Hydraulic bulge forming simulation of 6000 series aluminum alloy sheets using anisotropic yield functions and experimental validation
  • イカタセイ コウフク カンスウ オ モチイタ 6000ケイ アルミニウム ゴウキンバン ノ エキアツ バルジ セイケイ シミュレーション ト ジッケン ケンショウ

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抄録

Biaxial tensile tests of 6000 series aluminum alloy sheets with different density cube textures were carried out using cruciform specimens. The specimens were loaded under linear stress paths in a servo-controlled biaxial tensile testing machine. Plastic orthotropy remained coaxial with the principal stresses throughout every experiment. Successive contours of plastic work in stress space and the directions of plastic strain rates were precisely measured and compared with those calculated using selected yield functions: the von Mises, Hill's quadratic and Yld2000-2d [Barlat, F. et al., Int. J. Plasticity, 19 (2003), 1297–1319]. The Yld2000-2d yield functions with exponents of 12 and 6 are capable of reproducing the general trends of the work contours and the directions of plastic strain rates observed for test materials with high and low cube textures, respectively. Hydraulic bulge tests were also conducted and the variations of the thickness strain along the meridian directions of the bulged samples were compared with that calculated using finite element analysis (FEA) based on the Yld2000-2d yield functions with exponents of 12 and 6. The differences of cube texture density cause significant differences in the strain distributions of the bulged specimens, and the FEA results calculated using the Yld2000-2d yield functions show good agreement with the measurement results.

収録刊行物

  • 軽金属

    軽金属 62 (1), 7-13, 2012

    一般社団法人 軽金属学会

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