AI 中文总结
本研究提出稳定半隐式两相双点物质点法，经滑坡数值算例验证其结果更可靠，额外计算成本可接受，建议用于部分大变形岩土问题。
AI 中文摘要
本研究提出一种新型半隐式两相双点物质点法，其中水土两相采用两组不同的物质点建模，两组物质点均通过一种新方法实现稳定。采用Nor-Sand本构模型模拟更真实的土体行为。通过若干滑坡数值算例研究所提方法的性能，并凸显采用双点法的重要性。与传统单点法相比，滑坡算例中采用两组物质点的公式得到的结果显著不同但更可靠。此外，本研究表明，额外水物质点带来的额外计算成本是可接受的。因此，建议在一些大变形岩土问题中使用两组物质点。
英文摘要
In this research, a new semi-implicit two-phase double-point material point method is proposed, in which the soil and water phases are modelled using two distinct sets of material points, both being stabilised with a novel approach. The Nor-Sand constitutive model is implemented to simulate more realistic soil behaviour. Some landslide numerical examples are presented to investigate the performance of the proposed method and highlight the importance of using the double-point approach. The formulation with two sets of material points shows significantly different but more reliable results in the cases of landslides, compared with the conventional single-point approach. Furthermore, this research shows that the additional computational cost given by the additional water material points is acceptable. Therefore, it is recommended to use two sets of material points for some large deformation geotechnical problems.
DOI：10.62512/conf.ukacm2024.018
