| SHPB技术研究混凝土动态力学性能存在的问题和改进 |
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| 引用本文： | 巫绪涛,胡时胜,杨伯源,董钢. SHPB技术研究混凝土动态力学性能存在的问题和改进[J]. 合肥工业大学学报(自然科学版), 2004, 27(1): 63-66 |
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| 作者姓名： | 巫绪涛 胡时胜 杨伯源 董钢 |
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| 作者单位： | 合肥工业大学,土木建筑工程学院,安徽,合肥,230009;中国科学技术大学,材料力学行为和设计重点实验室,安徽,合肥,230027 |
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| 基金项目： | 合肥工业大学科学研究发展基金资助项目(030901F) |
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| 摘 要： | 根据实验和理论分析,目前分离式Hopkinson压杆装置(SHPB)间接测量混凝土材料动态应力—应变关系时主要存在三方面问题,分别是应力应变不均匀的限制、大尺寸SHPB压杆产生的应力波弥散及数据处理时应力波波头选取的影响。上述问题使得用传统SHPB方法在研究混凝土材料动态力学性能时的可靠性和精确性大大降低。因此,该文对上述问题的解决和改善进行了初步探讨。
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| 关 键 词： | 分离式Hopkinson压杆 材料动态力学性能 混凝土 应力波 |
| 文章编号： | 1003-5060(2004)01-0063-04 |
| 修稿时间： | 2003-05-15 |
An improvement in measuring the dynamic properties of concrete material by the traditional SHPB technique |
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| WU Xu-tao. An improvement in measuring the dynamic properties of concrete material by the traditional SHPB technique[J]. Journal of Hefei University of Technology(Natural Science), 2004, 27(1): 63-66 |
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| Authors: | WU Xu-tao |
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| Abstract: | There exist three main problems in the split Hopkinson pressure bar(SHPB) technique of measuring the dynamic properties of concrete material,which are the restriction of nonuniform stress (strain),the dispersion in wave propagation due to the large-diameter SHPB,and the influence of initial rising point of stress wave.The reliability and accuracy of the traditional SHPB technique are reduced because of these problems. Here proposed is an improvement to the traditional SHPB technique for avoiding the above difficulties. |
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| Keywords: | split Hopkinson pressure bar(SHPB) the dynamic properties of material concrete stress wave |
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