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<p>This study introduces a unified dynamic constitutive equation, the H/V–J/C model (for “Hollomon/Voce–Johnson Cook/Cowper Symonds”), to precisely characterize the mechanical behavior of various metallic materials across a broad spectrum of strain rates, utilizing the Johnson Cook and Cowper Symonds constitutive models at room temperature. The terms related to strain hardening and strain rate effects in these models have been altered. Thereafter, import the new model into ABAQUS finite element analysis software via the UMAT (User-defined Material) user subroutine, establishing a finite element model of the 1800-type corrugated steel web, which is then compared with experimental findings to validate the model's correctness. The study examines the impact of geometric parameter design on the shear performance of the 1800-type corrugated steel web. The findings demonstrate that the suggested H/V–J/C model is effective for accurately forecasting the dynamic constitutive connection throughout a broad strain rate spectrum for various metals. Integrating the H/V–J/C model into ABAQUS via the UMAT interface creates a highly accurate numerical model, hence broadening the applicability of the H/V–J/C model in finite element software and offering a novel framework for the engineering study of metallic structures.</p>

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Modification of a Dynamic Constitutive Model for a Wide Range of Strain Rates and Its Application to Shear Deformation of Corrugated Steel Web

  • 期刊论文

  • 发表日期：

    2025年2月10日

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  • Quanfu Su,
  • Xiaomin Li,
  • Liyou Huang,
  • Haitao Tan

摘要

This study introduces a unified dynamic constitutive equation, the H/V–J/C model (for “Hollomon/Voce–Johnson Cook/Cowper Symonds”), to precisely characterize the mechanical behavior of various metallic materials across a broad spectrum of strain rates, utilizing the Johnson Cook and Cowper Symonds constitutive models at room temperature. The terms related to strain hardening and strain rate effects in these models have been altered. Thereafter, import the new model into ABAQUS finite element analysis software via the UMAT (User-defined Material) user subroutine, establishing a finite element model of the 1800-type corrugated steel web, which is then compared with experimental findings to validate the model's correctness. The study examines the impact of geometric parameter design on the shear performance of the 1800-type corrugated steel web. The findings demonstrate that the suggested H/V–J/C model is effective for accurately forecasting the dynamic constitutive connection throughout a broad strain rate spectrum for various metals. Integrating the H/V–J/C model into ABAQUS via the UMAT interface creates a highly accurate numerical model, hence broadening the applicability of the H/V–J/C model in finite element software and offering a novel framework for the engineering study of metallic structures.