Comparison between stress within the single-layer soil and multi-layer soil Abaqus

Project Overview

This tutorial focuses on the comparison of vertical stress within single-layer and multi-layer soil under a circular surface load using Abaqus software. This example is based on Example 3.7 from the Sam Helwany book.

The purpose of this analysis is to investigate how the presence of multiple soil layers affects the distribution of vertical stress within the soil compared with a single-layer soil model.

Model Description

The soil is modeled as cylindrical domain with a height of 50 m and a diameter of 100 m.

Two soil configurations are investigated in this example. The first model consists of a single soil layer, while the second model consists of multiple soil layers. The vertical stress distribution obtained from both models is then compared.

Circular Loading

A circular loading area is defined on the top surface of the soil. A uniform pressure of 10 kPa is applied to this circular area.

The applied pressure produces an increase in vertical stress within the soil. The resulting stress distribution is obtained from the Abaqus analysis.

Single-Layer Soil

First, the soil is modeled as a single-layer soil. The vertical stress distribution caused by the circular surface load is obtained from the Abaqus simulation.

The numerical results are then compared with the corresponding results presented in the Sam Helwany book.

Multi-Layer Soil

In the second model, the soil is represented by multiple soil layers. The purpose is to investigate the effect of soil layering on the distribution of vertical stress beneath the circular loading area.

The stress results obtained from the multi-layer soil model are compared with those from the single-layer soil model.

Comparison of Results

The vertical stress results obtained from Abaqus are compared with the corresponding results from the Sam Helwany book.

The results from the single-layer and multi-layer soil models are also compared to investigate the effect of soil layering on the distribution of vertical stress.

What You Will Learn

• How to model a three-dimensional cylindrical soil domain in Abaqus.
• How to model single-layer soil.
• How to model multi-layer soil.
• How to apply a circular surface load.
• How to apply a uniform pressure of 10 kPa.
• How to investigate vertical stress within the soil.
• How to compare stress distributions in single-layer and multi-layer soil.
• How to compare Abaqus results with the results from the Sam Helwany book.
• How to evaluate the effect of soil layering on stress distribution.

Key Features

• Three-dimensional cylindrical soil model.
• 50 m soil height.
• 100 m soil diameter.
• Circular surface loading.
• 10 kPa applied pressure.
• Single-layer soil model.
• Multi-layer soil model.
• Vertical stress analysis.
• Comparison between single-layer and multi-layer soil.
• Comparison with Sam Helwany Example 3.7.
• Free Abaqus tutorial.