| 钢纤维活性粉末混凝土的动态力学性能 |
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| 引用本文： | 任兴涛,周听清,钟方平,胡永乐,王万鹏.钢纤维活性粉末混凝土的动态力学性能[J].爆炸与冲击,2011,31(5):540-547. |
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| 作者姓名： | 任兴涛 周听清 钟方平 胡永乐 王万鹏 |
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| 作者单位： | 中国科学技术大学近代力学系,安徽合肥230026;西北核技术研究所,陕西西安710024;中国科学技术大学近代力学系,安徽合肥,230026;西北核技术研究所,陕西西安,710024 |
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| 摘 要： | 利用?74mmSHPB实验装置对钢纤维活性粉末混凝土(RPC)进行动态压缩实验和动态劈裂拉
伸实验。获得了钢纤维RPC在1~102s-1应变率加载下的动态力学参数。对试件内的动态应力分布进行数
值模拟,验证了动态实验的有效性。结果表明,钢纤维RPC的动态压缩和动态劈裂拉伸的力学性能均表现出
显著的应变率效应。随着应变率的增加,钢纤维RPC冲击压缩破坏应力、冲击压缩破坏应变、弹性模量、动态
劈裂拉伸破坏应力均有一定程度的增加,动态拉压比相对静态拉压比也有显著的提高。
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| 关 键 词： | 固体力学 应变率效应 SHPB 活性粉末混凝土 动态压缩 动态劈裂 |
Dynamic mechanical behavior of steel-fiber reactive powder concrete |
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| REN Xing-tao ,ZHOU Ting-qing ,ZHONG Fang-ping ,HU Yong-le ,WANG Wan-peng.Dynamic mechanical behavior of steel-fiber reactive powder concrete[J].Explosion and Shock Waves,2011,31(5):540-547. |
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| Authors: | REN Xing-tao ZHOU Ting-qing ZHONG Fang-ping HU Yong-le WANG Wan-peng |
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| Institution: | 1.Departmentof ModernMechanics,UniversityofScienceandTechnologyof2.China,Hefei400041,Anhui,China; |
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| Abstract: | Dynamic compressive and tensile experiments were conducted for the steel-fiber reinforced reactive powder concrete(RPC) by using a 74-mm-diameter SHPB setup.The dynamic mechanical parameters were obtained for the steel-fiber reinforced RPC at the different strain rates of 1~10 2 s-1.The dynamic stress distribution in the specimen was numerically simulated to validate the dynamic tensile experiments.Investigated results reveal that both the dynamic compressive and tensile mechanical properties take on obviou... |
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| Keywords: | solid mechanics effects of strain rate SHPB reactive powder concrete dynamic compression dynamic tensile |
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