钢纤维混凝土冲击破坏特性GDEM软件模拟

张金; 戚志刚; 张磊

doi:10.21656/1000-0887.450311

钢纤维混凝土冲击破坏特性GDEM软件模拟

doi: 10.21656/1000-0887.450311

张金^1,2,
戚志刚^1,2,3,
张磊^1,2, ,

1. 目标易损性评估全国重点实验室，河南洛阳 471023;
2. 军事科学院国防工程研究院，河南洛阳 471000;
3. 哈尔滨工程大学航天与建筑工程学院，哈尔滨 150001

基金项目:

国家自然科学基金（12172381）：中原领军人才项目（234200510016）

详细信息

作者简介:
张金（1996—），男，博士生（E-mail: 2743008270@qq.com）;张磊（1974—），男，研究员，博士（通讯作者. E-mail: ustczhanglei@163.com）.

通讯作者:
张磊（1974—），男，研究员，博士（通讯作者. E-mail: ustczhanglei@163.com）.

中图分类号: O331
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- 文章访问数: 36
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- PDF下载量: 6
- 被引次数: 0
出版历程
- 收稿日期: 2024-11-18
- 修回日期: 2025-01-31
- 网络出版日期: 2025-05-30

Impact Damage Characteristics Simulation of Steel Fiber Reinforced Concrete With the GDEM Software

ZHANG Jin^1,2,
QI Zhigang^1,2,3,
ZHANG Lei^{1,2
, ,}

1. State Key Laboratory of Target Vulnerability Assessment, Luoyang, Henan 471023, P.R.China;
2. Institute of Defense Engineering, AMS, Luoyang, Henan 471000, P.R.China;
3. College of Aerospace and Civil Engineering, Harbin Engineering University, Harbin 150001, P.R.China

Funds:

The National Science Foundation of China(12172381)

摘要

摘要: 钢纤维混凝土(steel fiber reinforced concrete，SFRC)是防护工程中最常用的结构材料，在爆炸、侵彻等强动载作用下，其往往处于高应变率的复杂应力状态.目前，关于SFRC的动态力学性能的研究大多局限于一维应力和一维应变加载条件下，而关于三向应力状态下的冲击压缩特性研究较少.该文采用基于连续-非连续介质力学的数值仿真软件GDEM-BlockDyna，模拟了围压对SFRC动态力学性能和破坏模式的影响.结果表明：围压下SFRC的峰值应力和峰值应变均随着应变率的提高有不同程度的增大，但围压会抑制SFRC冲击压缩强度的率效应.GDEM能较逼真地模拟应变率和围压对材料动态力学的影响，与有限元方法相比，GDEM能够更好地模拟SFRC从完整到破坏的过程及特征，且对SFRC峰值应力后的破坏阶段的描述模拟更加准确.
- 钢纤维混凝土 /
- 主动围压 /
- GDEM /
- 有限元方法 /
- HJC模型
Abstract: Steel fiber-reinforced concrete（SFRC） is the most utilized structural material for protective engineering. 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 reduces simulate the effects of strain rate and confining pressure on the dynamic mechanics 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.
- steel fiber reinforced concrete /
- active confining pressure /
- GDEM /
- finite-element method /
- HJC model

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参考文献(24)

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钢纤维混凝土冲击破坏特性GDEM软件模拟

doi: 10.21656/1000-0887.450311

作者简介:
张金（1996—），男，博士生（E-mail: 2743008270@qq.com）;张磊（1974—），男，研究员，博士（通讯作者. E-mail: ustczhanglei@163.com）.

通讯作者:
张磊（1974—），男，研究员，博士（通讯作者. E-mail: ustczhanglei@163.com）.

计量

Impact Damage Characteristics Simulation of Steel Fiber Reinforced Concrete With the GDEM Software

计量

目录

留言板

钢纤维混凝土冲击破坏特性GDEM软件模拟

doi: 10.21656/1000-0887.450311

作者简介: 张金（1996—），男，博士生（E-mail: 2743008270@qq.com）;张磊（1974—），男，研究员，博士（通讯作者. E-mail: ustczhanglei@163.com）.

通讯作者: 张磊（1974—），男，研究员，博士（通讯作者. E-mail: ustczhanglei@163.com）.

计量

出版历程

Impact Damage Characteristics Simulation of Steel Fiber Reinforced Concrete With the GDEM Software

计量

出版历程

目录

作者简介:
张金（1996—），男，博士生（E-mail: 2743008270@qq.com）;张磊（1974—），男，研究员，博士（通讯作者. E-mail: ustczhanglei@163.com）.

通讯作者:
张磊（1974—），男，研究员，博士（通讯作者. E-mail: ustczhanglei@163.com）.