多孔硬脆性材料的SHPB实验技术  

EXPERIMENTAL TECHNIQUE OF SHPB FOR POROUS HARD AND BRITTLE MATERIALS

作　　者：高光发[1,2,3] 李永池[1] 刘卫国[4] 

机构地区：[1]中国科学技术大学近代力学系 [2]安徽理工大学能源与安全学院 [3]煤矿安全高效开采省部共建教育部重点实验室 [4]中国人民解放军第96361部队

出　　处：《力学与实践》2011年第6期35-39,共5页Mechanics in Engineering

基　　金：国家自然科学基金重点项目(10632080;50802092);安徽理工大学博士基金资助项目

摘　　要：以SHPB实验技术中一维假定和应力均匀假定为基础,针对多孔硬脆性材料的力学特性,分析了利用传统SHPB装置在实验研究中存在的问题,并从入射杆和透射杆的选取、传感器的选取、试件参数的确定、入射波形的确定和数据处理方法的选取等方面总结了克服这些问题的技术和方法.In view of the mechanical characteristics of the porous hard and brittle materials the existing problems in the measurement of the dynamic mechanical behavior based on the conventional SHPB experimental technique were analyzed on the basis of the two fundamental assumptions in the SHPB experiment. The influencies on experimental results of some factors such as the incident bar, transmission bar, sensors, specimen, incident wave shape and the data processing algorithm were investigated, respectively. According to the results, a modified experimental technique was developed for measuring the compressive stress-strain response of these materials. This paper provides some gaidances the design of SHPB experiments for porous materials or brittle materials.

关 键 词：SHPB 脆性材料 多孔材料 实验技术 

分 类 号：O348.3[理学—固体力学]