Abstract Cone penetration tests (CPTs) are widely used in geotechnical engineering for soil characterization and parameter determination. Throughout the years, experimental data have been used to determine correlations between CPT data and soil properties, such as stiffness or strength. Recent progress in advance numerical methods allows the simulation of the full CPT penetration by overcoming the limitations related to extreme deformations. The use of these numerical techniques provides new prospective to the soil characterization and determination of soil parameters, especially for the settings where limited (or no) experimental data is available and existing correlations are not accurate, or absent. This paper presents a numerical framework based on the Material Point Method (MPM) to simulate CPT in dry sand. First, it is proven that the calculation scheme is stable and accurate. Then, the model results are validated against chamber test data in terms of both cone resistance and displacement field during the penetration. Finally, some considerations about the formulation of the constitutive models of soils are presented, specifically oriented for CPT applications.

中文翻译：

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干砂锥入度模拟中材料点法的研究

摘要 锥入度试验 (CPT) 在岩土工程中广泛用于土壤表征和参数确定。多年来，实验数据已被用于确定 CPT 数据与土壤特性（例如刚度或强度）之间的相关性。先进数值方法的最新进展允许通过克服与极端变形相关的限制来模拟完整的 CPT 穿透。这些数值技术的使用为土壤表征和土壤参数的确定提供了新的前景，特别是在有限（或没有）实验数据可用且现有相关性不准确或不存在的情况下。本文提出了一种基于材料点法 (MPM) 的数值框架来模拟干砂中的 CPT。第一的，证明该计算方案是稳定、准确的。然后，根据穿透过程中锥体阻力和位移场的腔室测试数据验证模型结果。最后，提出了一些关于土壤本构模型公式的考虑，特别是针对 CPT 应用。