Scholarlink

Highly elastic polymers, such as rubber, exhibit significant research interest due to their large deformation mechanics at intermediate strain rates. Addressing this issue, the present study introduces a design for a Hopkinson Tensile Bar apparatus to capture the mechanical response of highly elastic soft materials. A striker tube-incident bar configuration of equal length and wave impedance was developed, generating superimposed cyclic stress waves on the bar, capable of producing an ultra-long incident pulse over 40 ms in duration. Based on this loading principle, an improved Hopkinson bar apparatus was designed. Simulation results indicate that the load strain, strain rate, and stress can be calculated from the strain signals on the bar, demonstrating good testing accuracy.

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Intermediate Strain Rate Hopkinson Tension Bar Based on Cyclic Stress Wave Loading

  • 会议论文

  • 发表日期：

    2025年

查看全文
  • Jianping Yin,
  • Xiang Li,
  • He He,
  • Wenxuan Du,
  • Zhibo Wu,
  • Chenxu Zhang,
  • Yinggang Miao,
  • Yulong Li

摘要

Highly elastic polymers, such as rubber, exhibit significant research interest due to their large deformation mechanics at intermediate strain rates. Addressing this issue, the present study introduces a design for a Hopkinson Tensile Bar apparatus to capture the mechanical response of highly elastic soft materials. A striker tube-incident bar configuration of equal length and wave impedance was developed, generating superimposed cyclic stress waves on the bar, capable of producing an ultra-long incident pulse over 40 ms in duration. Based on this loading principle, an improved Hopkinson bar apparatus was designed. Simulation results indicate that the load strain, strain rate, and stress can be calculated from the strain signals on the bar, demonstrating good testing accuracy.