摘要
以爆炸排淤填石法为背景 ,对不同应变率阶段淤泥的本构模型进行了分析 ,利用ANSYS/LS-DYNA动态有限元分析程序对所选择的模型进行验证和确认。计算和分析结果表明 :在形成爆炸空腔的高应变率阶段 ,淤泥表现为理想不可压缩流体的性质 ;在小药量小抵抗线条件下 ,甚至在淤泥自重作用下的较低应变率变形阶段 ,其黏性效应也可以忽略不计。
In this paper,seaooze constitutive models at different strain rate stages are studied based on the toe shooting method and the selected models are verified numerically via ANSYS/LS DYNA dynamic FEM program The numerical results show that seaooze behaves as an ideal non compressible fluid under explosive loading in high strain rate stage at which the blasting crater is forming while the viscosity of seaooze is negligible for small scale in low strain rate stage at which rock fill and seaooze flow to the blasting crater under gravity
出处
《工程爆破》
2003年第3期1-6,共6页
Engineering Blasting
基金
国家自然科学基金资助项目 (10 0 72 0 70 )
