3-D elasto-plastic spectral element application to evaluate the stability of large-scale landslides
3-D elasto-plastic spectral element application to evaluate the stability of large-scale landslides
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DOI：
10.1080/17486025.2014.985337
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发表时间：
2015-02
期刊：
影响因子：
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通讯作者：
R. Tiwari;N. Bhandary;R. Yatabe
中科院分区：
文献类型：
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作者：
R. Tiwari;N. Bhandary;R. Yatabe
本文研究了弹塑性谱元在边坡稳定性计算中的精度影响因素。它包含三类影响因素：1)建模域相关参数，2)光谱参数，3)X弹塑性参数。每个类别都有许多准确性影响因素。在弹塑性有限元方法中，建模域和弹塑性相关的影响因子可以平等地应用，但谱校正只能应用于谱单元应用。本文在坡角26.26°、36.69°和45°三个具有代表性的理论范围内，对所有三个影响因素对边坡稳定系数的影响进行了数值评价。此外，研究重点是谱元在边坡稳定性评价中的应用，因为它是一种新的、可靠的边坡稳定性建模方法。与现有的建模方法相比，应用于边坡稳定性建模具有以下几个优点：1)有限元几何灵活；2)计算效率高；3)谱精度可靠；
This research deals with the computational accuracy impact factors of elasto-plastic spectral element applications to slope stability. It contains three categories of impact factors: 1) modelling domain related parameters, 2) spectral parameters, and 3)X elasto-plastic parameters. Each category has many accuracy impact factors. The modelling domain and elasto-plastic related impact factors can be equally applied to the elasto-plastic finite element method, however spectral corrections can only be applied for spectral element applications. This work presents a numerical evaluation of all three impact factors to the stability factor of a slope in three representative theoretical domains of slope angle, of 26.26°, 36.69°, and 45°. In addition, the study focuses on spectral element applications to slope stability evaluation, because it is a new and reliable approach in slope stability modelling. It has several benefits over the existing modelling methods to apply for slope stability modelling: 1) geometric flexibility of the finite elements, 2) high computational efficiency, 3) reliable spectral accuracy, and 4) high numerical stability.