冲击作用下的摩擦力效应实验研究  

Experimental study of friction effect under impact loading

作　　者：蒋国平[1] 郝洪[1] 曾春航 郝逸飞[1] 吴如军 刘纪超[1] 

机构地区：[1]广州大学,工程抗震中心,广州510405 [2]广州市胜特建筑科技开发有限公司,广州510405

出　　处：《物理学报》2013年第11期389-394,共6页Acta Physica Sinica

基　　金：国家自然科学基金项目(批准号:51078094);广州白云区科技计划项目(批准号:2012-KZ-58)资助的课题~~

摘　　要：针对摩擦力效应产生的机理,本文设计了三种不同尺寸的试件进行SHPB实验,得到了摩擦力效应对实验的定量影响,在此基础上对混凝土的DIF进行了修正研究,为混凝土抗冲击工程设计提供了参考依据.When testing impact dynamics of concrete, usually a variety of kinetic effects can be seen, such as the axial and lateral inertial confinement effects, the effects Of stress wave propagation and the final friction effects, etc. Some of these are the material is nature itself such as the size effect, some are experimental errors, etc., but all the dynamic effects, may enter the final test results so that unnecessary errors or even wrong values may be brought into experiments. Due to the mechanism of friction effect, we have designed three different sizes of specimen for SHPB test. The quantitative values of the friction effect are obtained. The DIF is corrected, which is the basis for concrete impact engineering design.

关 键 词：冲击 混凝土 SHPB 摩擦力 

分 类 号：O313.5[理学—一般力学与力学基础]