引用本文: 闫澍旺, 霍知亮. 岩土工程下沉贯入数值模拟方法研究进展[J]. 力学与实践, 2016, 38(3): 237-249,236.
YAN Shuwang, HUO Zhiliang. ADVANCE IN NUMERICAL SIMULATION METHODS FOR PENETRATION IN GEOTECHNICAL ENGINEERING[J]. MECHANICS IN ENGINEERING, 2016, 38(3): 237-249,236.
 Citation: YAN Shuwang, HUO Zhiliang. ADVANCE IN NUMERICAL SIMULATION METHODS FOR PENETRATION IN GEOTECHNICAL ENGINEERING[J]. MECHANICS IN ENGINEERING, 2016, 38(3): 237-249,236.

## ADVANCE IN NUMERICAL SIMULATION METHODS FOR PENETRATION IN GEOTECHNICAL ENGINEERING

• 摘要: 岩土工程下沉贯入领域的数值分析,由于结构物贯入时网格变形过大而产生扭曲畸变等问题,常会造成收敛困难甚至计算结果失真. 采用合适的数值方法分析此类问题颇具挑战性. 本文系统介绍了近年来对于岩土下沉贯入数值模拟的研究现状和发展动态,对各种数值模拟方法的相关原理、主要特征以及优缺点进行简要的探讨. 并简要介绍耦合的欧拉-拉格朗日(coupled Eulerian-Lagrangian, CEL) 有限元法的基本原理,通过不排水条件下的条形基础贯入问题和砂土中桩的静压下沉示例分析,表明CEL 有限元法在模拟岩土贯入问题时计算结果的准确性和较其他模拟方法的优势. 文中所阐述的岩土贯入分析数值模拟方法可供从事岩土贯入分析的相关学者借鉴参考.

Abstract: Earth penetration in geotechnical engineering is difficult to model, largely due to the transient, cou- pled nature of the impact event. The interaction between the penetrator and the target is inherent due to their vastly different material responses. The loading induced on the penetrator can lead to a significant deformation and potentially high shock levels on any onboard components. It is a challenging task to simulate such problems properly. This paper presents typical progresses, and the principles and features of each simulating method are elaborated. In addition, the rationale of the coupled Eulerian-Lagrangian method is discussed in detail. Two examples, the surface footing and the pile penetration, show that the coupled Eulerian-Lagrangian method is more accurate and convenient than other methods for the penetration analysis in geotechnical engineering. The numerical simulation methods of penetration in geotechnical engineering discussed in this paper can be used by related researchers.

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