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Finite element analysis of cone penetration in cohesionless soil

机译：无粘性土中锥入度的有限元分析

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Displacement finite element analysis is performed for a cone-penetration test in cohesionless soils. By modelling finite strain in the soil and large scale sliding at the penetrometer-soil interface, a more realistic penetration process is simulated in which the pene-trometer is assumed to be rigid and the soil is assumed to be an elastic-perfect-plastic continuum obeying the Mohr-Coulomb criterion. The cone resistance found from the calculations shows that the depth of steady-state penetration depends on the stress state and the soil properties. Parametric studies are performed to illustrate the influence of various factors on the cone resistance at the steady state. The deformation mode of the soil around the cone, as well as the plastic zone, is shown to be similar to that caused by cavity expansion. Indeed, the calculated cone resistances are comparable with empirical correlations based on cavity-expansion theory.
机译：在无粘性的土壤中进行位移渗透有限元分析，以进行锥形渗透试验。通过对土壤中的有限应变进行建模，并在针入度计-土壤界面处进行大规模滑动，可以模拟更现实的渗透过程，其中将针入度计假定为刚性，而土壤则为弹性完美塑性连续体遵守Mohr-Coulomb准则。通过计算发现的圆锥阻力表明，稳态渗透的深度取决于应力状态和土壤特性。进行了参数研究，以说明各种因素对稳态下的锥阻的影响。圆锥周围的土壤以及塑料区域的变形模式显示出与空腔扩张引起的变形模式相似。实际上，所计算的圆锥电阻与基于腔体膨胀理论的经验相关性相当。

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