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<p>The dynamic deformation behaviors of aluminum alloy sheets often differ from the quasi-static ones. Here, a dynamic biaxial tensile experiment of cruciform specimens has been proposed with electromagnetically actuated punch. A notched cruciform specimen was adopted to obtain heterogeneous deformation covering from equal-biaxial tensile to uniaxial tensile strain path. The inverse identification was used to determine the parameters of Hill48 and YLD2000-2D anisotropic yield functions for 5052-O aluminum alloy sheet. The YLD2000-2D anisotropic yield function was validated by comparison of the simulated and experimental principal strains. By comparison with the anisotropic yield functions under quasi-static loading conditions, the anisotropic yielding behaviors of 5052-O aluminum alloy sheet are alleviated under dynamic loading conditions.</p>

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Dynamic Biaxial Tensile Experiment of Cruciform Specimen with Electromagnetically Actuated Punch

  • 期刊论文

  • 发表日期：

    2025年9月8日

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  • Wei Liu,
  • Chenhao Xie,
  • Bo Peng,
  • Jiaqi Li,
  • Shangyu Huang

摘要

The dynamic deformation behaviors of aluminum alloy sheets often differ from the quasi-static ones. Here, a dynamic biaxial tensile experiment of cruciform specimens has been proposed with electromagnetically actuated punch. A notched cruciform specimen was adopted to obtain heterogeneous deformation covering from equal-biaxial tensile to uniaxial tensile strain path. The inverse identification was used to determine the parameters of Hill48 and YLD2000-2D anisotropic yield functions for 5052-O aluminum alloy sheet. The YLD2000-2D anisotropic yield function was validated by comparison of the simulated and experimental principal strains. By comparison with the anisotropic yield functions under quasi-static loading conditions, the anisotropic yielding behaviors of 5052-O aluminum alloy sheet are alleviated under dynamic loading conditions.