作者机构：
[刘希灵; 周子龙; 李夕兵; 尹土兵; 叶洲元; 洪亮] School of Resources and Safety Engineering, Central South University, Changsha 410083, China;[洪亮] Department of Civil Engineering, Hunan City University, Yiyang 413000, China
通讯机构：
[Liang Hong] S;School of Resources and Safety Engineering, Central South University, Changsha, China<&wdkj&>Department of Civil Engineering, Hunan City University, Yiyang, China
摘要：
Based on the characteristics of 1D waves, the stress uniformity process in specimens under different loading conditions of rectangular and half-sine input waves was analyzed in split Hopkinson pressure bar (SHPB) test. The results show that the times of an elastic wave propagating from one end to the other in a specimen to attain stress equilibrium, is related to input waveforms and relative mechanical impedance between the specimen and the input/output bars. Hereinto, with the increae of the relative impedance, the times decreases under rectangular input waves loading, while it increases under half-sine input wave loading. The dimensionless stress value of specimen corresponding to the status of stress equilibrium increases with the increase of the relative mechanical impedance. However, the dimensionless stress value under half-sine input wave loading is significantly lower than the value under rectangular input wave loading for specimen with low mechanical impedance, and the relative differentia of the dimensionless stress values under two loading conditions decreases with the increase of the relative mechanical impedance. In general, the forced state of specimen with relatively low mechanical impedance under half-sine input wave loading is evidently superior to the state under rectangular input wave loading in SHPB test, and the advantages of forced state under half-sine input wave loading turns weak with the increase of the relative mechanical impedance.
作者机构：
[许明情; 黎振兹; 曹平; 江学良; 杨慧] School of Resources and Safety Engineering, Central South University, Changsha 410083, China;[黄尚安] School of Civil and Architectural Engineering, Central South University, Changsha 410083, China;[江学良] School of Civil Engineering, Hunan City University, Yiyang 413000, China
通讯机构：
School of Resources and Safety Engineering, Central South University, China
作者机构：
[刘俊生; 李运春; 李文斌; 梁文杰; 何运斌; 潘清林] School of Materials Science and Engineering, Central South University, Changsha 410083, China;[李文斌] Department of Civil Engineering, Hunan City University, Yiyang 413000, China
通讯机构：
School of Materials Science and Engineering, Central South University, China
作者机构：
[周先雁] College of Civil Engineering, Architecture and Mechanics, Central South University of Forestry and Technology, Changsha 410004, China;[曹国辉] Civil Engineering College, Hunan City University, Yiyang 413000, China
通讯机构：
College of Civil Engineering, Architecture and Mechanics, Central South University of Forestry and Technology, China
作者机构：
[邓宗伟] School of Civil Engineering, Hunan City University, Yiyang 413000, China;[李志勇; 岳志平] Hunan Communications Scientific Academy, Changsha 410015, China;[饶杨安] Institute of Rock and Soil Mechanics, Chinese Academy of Sciences, Wuhan 430071, China;[邓宗伟; 冷伍明] School of Civil and Architectural Engineering, Central South University, Changsha 410075, China
通讯机构：
School of Civil Engineering, Hunan City University, China
作者机构：
[王海波; 余志武] School of Civil Eng. and Architecture, Central South Univ., Changsha 410075, China;[陈伯望; 王海波] College of Civil Eng., Hunan City Univ., Yiyang 413000, China
通讯机构：
School of Civil Eng. and Architecture, Central South Univ., China
作者机构：
[余志武] School of Civil Engineering and Architecture, Central South University, Changsha 410075, China;[陈伯望] College of Civil Engineering, Hunan City University, Yiyang 413000, China;[王海波] School of Civil Engineering and Architecture, Central South University, Changsha 410075, China<&wdkj&>College of Civil Engineering, Hunan City University, Yiyang 413000, China
通讯机构：
[Wang, H.-B.] S;School of Civil Engineering and Architecture, Central South University, China
作者机构：
[王海波; 余志武] School of Civil Engineering and Architecture, Central South University, Changsha 410075, China;[陈伯望; 王海波] College of Civil Engineering, Hunan City University, Yiyang 413000, China
通讯机构：
School of Civil Engineering and Architecture, Central South University, China
作者机构：
[方志; 曹国辉] School of Civil Engineering, Hunan City University, Yiyang 413000, China;[曹国辉] School of Civil Engineering, Hunan University, Changsha 410082, China
通讯机构：
School of Civil Engineering, Hunan City University, China
作者机构：
[文明才] School of Civil Engineering, Hunan City University, Yiyang 413000, China;[戴振东] Institute for Bio-inspired Structures and Surface Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
通讯机构：
School of Civil Engineering, Hunan City University, China
作者机构：
[祝晓庆; 杨伟军; 陈利群] College of Civil and Architecture, Changsha University of Science and Technology, Changsha 410076, China;[陈利群] Civil Engineering College, Hunan City University, Yiyang 410003, China
通讯机构：
[Yang, W.-J.] C;College of Civil and Architecture, Changsha University of Science and Technology, China
作者机构：
[刘新喜; 夏元友] School of Civil Engineering and Architecture, Wuhan University of Technology, Wuhan 430070, China;[陈向阳] College of Civil Engineering, Hunan City University, Yiyang 413000, China;[宁齐元] Hunan Vocational College of Technology, Xiangtan 411100, China;[蔡俊杰] Xiangtan Municipal Planning Bureau, Xiangtan 411100, China
通讯机构：
School of Civil Engineering and Architecture, Wuhan University of Technology, China
作者机构：
[方志; 曹国辉] School of Civil Engineering, Hunan University, Changsha 410082, China;[曹国辉] School of Civil Engineering, Hunan City University, Yiyang 413000, China
通讯机构：
School of Civil Engineering, Hunan University, China
作者机构：
[方志; 曹国辉] School of Civil Engineering, Hunan University, Changsha 410082, China;[曹国辉] School of Civil Engineering, Hunan City University, Yiyang 413000, China
通讯机构：
[Cao, G.-H.] S;School of Civil Engineering, Hunan University, China
作者机构：
[饶欣频; 方志; 曹国辉; 方智锋] School of Civil Engineering, Hunan University, Changsha 410082, China;[曹国辉] School of Civil Engineering, Hunan City University, Yiyang 413000, China
通讯机构：
School of Civil Engineering, Hunan University, China
