应用数学和力学2025，Vol.46Issue(5)：621-632,12.DOI:10.21656/1000-0887.450311
钢纤维混凝土冲击破坏特性GDEM软件模拟
Impact Damage Characteristics Simulation of Steel Fiber Reinforced Concrete With the GDEM Software
摘要
Abstract
Steel fiber-reinforced concrete(SFRC)is the most utilized structural material for protective engi-neering.It is frequently subjected to complex stress states with high strain rates under strong dynamic loads,such as explosions and penetrations.Most current studies on the dynamic mechanical properties of SFRC are limited to 1D stress and 1D strain loading conditions.However,the impact-compression characteristics under 3D stress states are still scarce.Herein the GDEM-BlockDyna numerical simulation software was employed to simulate the damage modes of SFRC under confining pressures and investigate the concrete dynamic mechanical properties.The results indicate that,the peak stress and peak strain of SFRC both increase to different extents with the strain rates.The confining pressure reduces the rate effect on the impact compression strength of SFRC.The GDEM can realistically simulate the effects of strain rate and confining pressure on the dynamic me-chanics of materials.In comparison to the finite element method,the GDEM is more effective in simulating the behaviors of steel fiber reinforced concrete,from its intact state to destruction.Furthermore,the GDEM can accurately describe the destruction stage characteristics of SFRC after the peak stress.关键词
钢纤维混凝土/主动围压/GDEM/有限元方法/HJC模型Key words
steel fiber reinforced concrete/active confining pressure/GDEM/finite-element method/HJC model分类
力学引用本文复制引用
张金,戚志刚,张磊..钢纤维混凝土冲击破坏特性GDEM软件模拟[J].应用数学和力学,2025,46(5):621-632,12.基金项目
国家自然科学基金(12172381) （12172381）
中原领军人才项目(234200510016) （234200510016）
