不同波形下应力早期不均匀性数值模拟
首发时间:2010-03-26
摘要:本文从SHPB实验装置加载波形入手 ,运用有限元软件ANSYS/LS-DYNA对传统矩形波和改进的半正弦波加载下并分析大直径 SHPB试验中试件的应力均匀性, ,验证了半正弦波加载在岩石类大直径SHPB实验中的优越性。
关键词: 矩形波 半正弦波 应力早期平衡 ANSYS/LS-DYNA
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Numerical simulation of early stage specimen stress equilibrium in different wave-formed
Abstract:Started with the loaded wave of SHPB, the early stage specimen stress equilibrium with rectangle and half-sine wave-formed by using the 3D non-linear dynamic finite element code ANSYS/LS-DYNA are analyzed. The results validate and show that half-sine loaded wave of SHPB made stress in reaches equilibrium faster than the rectangle loaded wave and is perfect to be used in the test with large-diameter SHPB for brittle materials such as rocks.
Keywords: Rectangle wave Half-sine wave Early stage stress equilibrium ANSYS/LS-DYNA
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