岩石类SHPB实验理想加载波形的三维数值分析  

Three Dimensional Numerical Analysis of Perfect Loading Wave-form of Rock With SHPB

作　　者：周子龙[1] 李夕兵[1] 赵国彦[1] 胡柳青[1] 

机构地区：[1]中南大学资源与安全工程学院,湖南长沙410083

出　　处：《矿冶工程》2005年第3期18-20,共3页Mining and Metallurgical Engineering

基　　金：国家自然科学基金项目(10472134)资助;国家自然科学基金重大项目(50490274;50490272)

摘　　要：从SHPB实验装置加载波形入手,运用非线性动力分析有限元程序对传统矩形波和改进的半正弦波加载下不同直径入射杆中的波形弥散情形进行分析,显示并验证了SHPB半正弦加载波随杆径增大无明显弥散。该波形是用于岩石类脆性材料大直径SHPB测试的理想波形。Started with the loaded wave of SHPB, the different wave dispersion of different diameter SHPB input bar with rectangle and half-sine wave-formed by using the 3D non-linear dynamic finite element code are analyzed. The results validate and show that half-sine loaded wave of SHPB has little dispersion with the increase in the diameter of bars and is perfect to be used in the test with large-diameter SHPB for brittle materials such as rocks.

关 键 词：岩石动态测试 大直径SHPB 弥散效应 半正弦加载波 

分 类 号：TU452[建筑科学—岩土工程] O347.1[建筑科学—土工工程]