%0 Journal Article
%T A New Combined Compression-shear Loading Technique at High Strain Rates<br>一种新的高应变率复合压剪实验技术
%A CUI Yun-xiao
%A LU Fang-yun
%A LIN Yu-liang
%A CHEN Jun
%A TAN Duo-wang
%A <br>崔云霄
%A 卢芳云
%A 林玉亮
%A 陈军
%A 谭多望
%J 实验力学
%D 2006
%I 
%X Based on the modified split Hopkinson bar(SHB),a new planar dynamic loading technique combining compression-shear under strain rates in range of 10~2~10~3s~-1 is proposed in this paper.In order to generate shear and compressive stresses simultaneously in specimen,the oblique-plate impact experiment is introduced.The end surface of the input bar is improved in the shape of cut-cone.The main purpose of this work is to acquire the constitutive equation under complex stresses loaded at high strain-rates.Related theoretic analysis and numerical simulation prediction of the technique are presented.The stress wave propagation in the specimen is calculated by using the explicit dynamic FEM-code LS-DYNA.A preliminary test is carried out.The results of the simulation and test show that the combined compression-shear loading can be realized in the specimen by this technique,Therefore a systematic understanding on complicated mechanical properties of the materials can be obtained with this technique.
%K multiple compression-shear
%K numerical simulation
%K Hopkinson bars<br>复合压剪加载
%K 数值模拟
%K Hopkinson杆
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=6E709DC38FA1D09A4B578DD0906875B5B44D4D294832BB8E&cid=5D344E2AD54D14F8&jid=49067A0A0D864088C06A84AACB51A5B2&aid=084D0E38BE9FEB12&yid=37904DC365DD7266&vid=659D3B06EBF534A7&iid=94C357A881DFC066&sid=E04FC1B5BC47587B&eid=C7461453A367FC85&journal_id=1001-4888&journal_name=实验力学&referenced_num=0&reference_num=15