The impact of mesh structural design on nonlinear numerical simulation of geo‐structure: A seismic analysis

Abstract

The strain energy is one of the significant factors in geo‐structure nonlinear analysis. The design quality in geotechnical earthquake engineering associates with the accuracy of the numerical simulation and the high quality of the seismic response prediction. In this study, the embankment‐subsoil Models A and B are modeled with the same geometry and two different meshes. To predict the strain mechanism of the embankment‐subsoil model, the hexahedral and tetrahedral meshes are used in nonlinear numerical simulation. To control the quality of the numerical simulation, the statistical analysis was made. The results of the statistical analysis illustrate that mesh shape governs the accuracy of the numerical simulation. The finding of this study improves the simulation of strain mechanism in embankment‐subsoil seismic analysis.

Overview of the Constitutive Model and Numerical Calibration by FEM to Compute Bearing Capacity and Embankment-Core Deformability

“…Several numerical methods can be used to calculate the stress-strain state of a structure: boundary elements, finite volumes, finite differences, and the finite-element method, among others (Haftka and Malkus, 1981;Namdar, 2020;Osipov et al, 2018;Otálvaro and Nanclares, 2009). This study uses the finite-element method, which, conceptually, is the breakdown of a continuous physical element into a discrete number of parts or elements that are connected by a number of points called nodes.…”

Design geometry of the embankment for minimize nonlinear displacement

“…The seismic response of the embankment subjected to seismic loading was investigated 2–6 through analysis of the effect of mechanical properties of the soil on displacements of embankment‐subsoil, 2 through simulation nonlinear displacement of cohesionless soil subjected to dynamic loading under laboratory condition, 3,4,6 and through assessment of nonlinear displacement of the embankment‐subsoil model impact of mesh structural design on nonlinear numerical simulation of geo‐structure, which was reported to improve quality of nonlinear displacement assessment, 5 and there is no report about the influence of embankment model geometry on the nonlinear displacement of the embankment model in either laboratory experimental results or numerical simulation outcome.…”