| 爆炸排淤填石法中淤泥的本构模型 |
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| 引用本文： | 乔继延,丁桦,郑哲敏. 爆炸排淤填石法中淤泥的本构模型[J]. 工程爆破, 2003, 9(3): 1-6 |
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| 作者姓名： | 乔继延 丁桦 郑哲敏 |
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| 作者单位： | 中国科学院力学研究所,北京,100080 |
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| 基金项目： | 国家自然科学基金资助项目 (10 0 72 0 70 ) |
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| 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。
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| 关 键 词： | 爆炸排淤填石法 淤泥 理想弹塑性模型 宾汉体模型 |
| 文章编号： | 1006-7051(2003)03-0001-06 |
| 修稿时间： | 2003-06-17 |
SEAOOZE CONSTITUTIVE MODEL FOR TOE-SHOOTING METHOD |
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| QIAO Ji yan,DING Hua,ZHENG Zhe min. SEAOOZE CONSTITUTIVE MODEL FOR TOE-SHOOTING METHOD[J]. Engineering Blasting, 2003, 9(3): 1-6 |
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| Authors: | QIAO Ji yan DING Hua ZHENG Zhe min |
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| Abstract: | 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 |
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| Keywords: | Toe shooting method Seaooze Ideal elastoplastic model Bingham model |
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