2025 Vol.8 Aug.N04

• Title: Multi scale coupled finite element modeling and impact response analysis of dynamic damage in concrete
• Name: Rui Guo1,Jiaqi Luo1,Tongqiang Luo2
• Company: Multi scale coupled finite element modeling and impact response analysis of dynamic damage in concrete
• Abstract:

  As a non-homogeneous composite material, the dynamic mechanical properties of concrete are crucial under extreme loads such as impact, explosion, and earthquake. This article focuses on the multi-scale dynamic damage mechanism of concrete and proposes a macro micro coupled finite element modeling method. At the microscale, Voronoi tessellation is used to simulate the random distribution of aggregates, and the modified Drucker Prager constitutive model is combined to describe the micromechanical behavior; At the macro scale, the Johnson Holmquist model is introduced to characterize the strain rate effect and damage evolution under dynamic loads, and a damage evolution equation based on equivalent plastic strain is established. By using explicit dynamic algorithms to solve macroscopic dynamic equilibrium equations and mapping them in real-time to microscopic models for local refinement analysis, the macroscopic damage variables and microscopic failure mechanisms are simultaneously tracked for iterative correction. The experimental results show that the model has high prediction accuracy under low strain rate conditions, and the research results provide theoretical support for the impact resistance design of concrete structures.

  
  

• Keyword: Rui Guo1,Jiaqi Luo1,Tongqiang Luo2
• DOI: 10.12250/jpciams2025090802
• Citation form: Rui Guo,Jiaqi Luo,Tongqiang Luo.Multi scale coupled finite element modeling and impact response analysis of dynamic damage in concrete[J]. Computer Informatization and Mechanical System,2025,Vol.8,pp.7-10

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