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<p>To define the mechanical properties of concrete in ABAQUS using the flow rule, plastic strain values must be positive and increase with strain. These constraints limit the number of input stress–strain data points. The choice of analysis method significantly affects accuracy and computational efficiency. While quasi-static analysis provides higher precision, it requires considerably longer execution times compared to the explicit dynamic method, making the latter more suitable for large-scale simulations. This study investigates the effect of varying stress–strain data points in numerical modeling and examines how tensile damage influences the structural capacity of reinforced concrete (RC) elements. The findings indicate that in explicit dynamic analysis, reducing the number of tensile damage points has minimal impact on the structural response. However, quasi-static nonlinear analysis using the Concrete Plastic Damage Model (CPDM) offers higher accuracy, particularly for evaluating crack locations, crack propagation, and tensile and compressive damage in RC structures.</p>

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Comparative evaluation of quasi-static and explicit dynamic analysis using concrete plastic damage model

  • 期刊论文

  • 发表日期：

    2025年7月24日

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  • Ehsan Araghizadeh,
  • Ramin Tabatabaei Mirhosseini

摘要

To define the mechanical properties of concrete in ABAQUS using the flow rule, plastic strain values must be positive and increase with strain. These constraints limit the number of input stress–strain data points. The choice of analysis method significantly affects accuracy and computational efficiency. While quasi-static analysis provides higher precision, it requires considerably longer execution times compared to the explicit dynamic method, making the latter more suitable for large-scale simulations. This study investigates the effect of varying stress–strain data points in numerical modeling and examines how tensile damage influences the structural capacity of reinforced concrete (RC) elements. The findings indicate that in explicit dynamic analysis, reducing the number of tensile damage points has minimal impact on the structural response. However, quasi-static nonlinear analysis using the Concrete Plastic Damage Model (CPDM) offers higher accuracy, particularly for evaluating crack locations, crack propagation, and tensile and compressive damage in RC structures.