Udemy
    •  
    •  
    •  
    •  
    •  
    •  
    •  
    •  
Subscribe
Turn what you know into an opportunity and reach millions around the world.
Learn More
Your cart is empty.
Keep shopping
Perform better geotechnical numerical analysis
Rating: 4.6 out of 5(758 ratings)
12,861 students

What you'll learn

  • Define the aims of a geotechnical numerical model
  • Develop the geometry of an analysis model and apply appropriate simplifications
  • Set up appropriate initial states and construction stages
  • Select appropriate models and parameters to simulate ground behaviour
  • Select appropriate groundwater and drainage conditions
  • Judge whether analysis outputs are reasonably accurate
  • Select appropriate elements and material models for structures

Course content

2 sections • 18 lectures • 2h 8m total length

  • Analysis Planning9:53

    After viewing this lecture you should be able to:

    • Prioritise the features of an analysis in order to meet the analysis needs
    • Compose a list of aims of each analysis model
    • Identify the strengths, weaknesses, assumptions and limitations of an analysis program
    • Organise the analysis process.

    The text of the commentary can be downloaded below to facilitate its translation, if required.

  • Geometry simplification10:58

    After viewing this lecture you should be able to:

    • Apply appropriate simplifications to the analysis geometry to speed the analysis process without significantly affecting outputs
    • Judge whether a simplified numerical model is adequate to meet the needs of an analysis
    The text of the commentary can be downloaded below to facilitate its translation, if required.
  • Plane Strain and Axisymmetric Assumptions9:08

    After viewing this lecture you should be able to:

    • Illustrate the 3D projection of the 2D plane strain and axisymmetric geometrical assumptions.
    • Select appropriate geometrical assumptions in order to complete an analysis effectively

    The text of the commentary can be downloaded below to facilitate its translation, if required.

  • Locating Boundaries7:20

    At the end of this lecture you should be able to:

    • Locate boundaries to the analysis model at appropriate distances from the area of interest in order to eliminate any false boundary effects.
    The text of the commentary can be downloaded below to facilitate its translation, if required.
  • Fixities and Axes of Symmetry5:22

    At the end of this lecture you should be able to:

    • Apply appropriate boundary conditions to the analysis model.

    The text of the commentary can be downloaded below to facilitate its translation, if required.

  • Elements and Meshing5:55

    At the end of this lecture you should be able to:

    • Create a mesh suitable for all stages of the analysis, sufficiently fine in critical areas and with good aspect ratio and gradation.
    • Select appropriate element types, including interface elements where necessary

    The text of the commentary can be downloaded below to facilitate its translation, if required.

  • Half-Time Quiz
  • Constitutive Model Selection3:56

    At the end of this lecture you should be able to:

    • Prioritise the important characteristics of soil and rock behaviour for particular applications
    • Combine site investigation and characterisation test results with the aims of the analysis to justify constitutive model selections

    The text of the commentary can be downloaded below to facilitate its translation, if required.

  • Initial Stress7:58

    At the end of this lecture you should be able to:

    • Set up appropriate initial stress by direct specification or initiation of gravity switch-on
    • Explain the importance of setting up initial stresses correctly

    The text of the commentary can be downloaded below to facilitate its translation, if required.

  • Construction Methods7:20

    At the end of this lecture you should be able to:

    • Recognise the influence of the construction methods on the numerical model
    • Create construction stages in an analysis model that adequately capture the important aspects of the true construction sequence
    • Assess the effect of compaction of soil and the ways to model it in a simplified manner

    The text of the commentary can be downloaded below to facilitate its translation, if required.

  • Analysis Options9:24

    At the end of this lecture you should be able to:

    • Give examples of situations where a large strain or updated mesh formulation would be required
    • Select appropriate drainage conditions (drained, undrained, consolidation) for each ground type for each construction stage
    • Select appropriate groundwater levels, pressures and flow conditions based on site investigation information and any anticipated changes

    The text of the commentary can be downloaded below to facilitate its translation, if required.

  • Analysis Methods4:49

    At the end of this lecture you should be able to:

    • Choose appropriate solution methods and convergence requirements
    • Resolve convergence problems in non-linear analyses appropriately

    The text of the commentary can be downloaded below to facilitate its translation, if required.

  • Validation3:07

    At the end of this lecture you should be able to:

    • Illustrate the expected dominant stress path of the problem being considered
    • Improve a numerical model in response to early outputs
    The text of the commentary can be downloaded below to facilitate its translation, if required.
  • Reporting4:35

    At the end of this lecture you should be able to:

    • Prepare a report presenting an analysis model for both internal and external use
    • Develop recommendations for design based on numerical analysis results
    The text of the commentary can be downloaded below to facilitate its translation, if required.
  • Full-Time Quiz

Requirements

  • You need to have a good background knowledge of soi and/or rock mechanics and geotechnical engineering.

Description

This course teaches you the decision-making process when setting up a geotechnical numerical model as well as how to add structural elements in soil-structure interaction problems appropriately. It is the first software-neutral e-learning course in this field and is aimed at novice users of the software in both academia and industry.

The first section contains 13 lectures structured in the normal sequence of setting up a geotechnical numerical model, from planning the analysis to reporting the results at the end. The first six lectures focus on setting up the model geometry including rationalising the geometry, the 2D plane strain and axisymmetric assumptions, boundary conditions and mesh generation. This is followed by a self-test quiz with feedback provided on your answers. Another seven lectures then follow covering the input parameters that need to be provided including constitutive model selection and setting up the initial state and subsequent construction stages. We end with the important stages of validating the analysis results and presenting the input and output data in a report. These lectures are also followed by a self-test quiz.

The second section contains five lectures on modelling structural elements, including the different element types and modelling concrete and steel materials. There is also a worked example on deriving input parameters and interpreting output for structural elements in plane strain and axisymmetric models.

All the lectures use videos with 3D graphics and a commentary by our tutor to illustrate many of the complex geometrical concepts that are explained in this course in an engaging way.

On completing this course you will be able to prepare geotechnical numerical analyses more confidently, avoiding many of the common errors of novice users. You will gain valuable skills in geotechnical numerical analysis – a method whose use in geotechnical design is growing rapidly.

Who this course is for:

  • This is a practical, introductory course to geotechnical numerical analysis intended for new and inexperienced users of such software both in industry and in academic study.
  • This course is not likely to be suitable for experienced users of geotechnical numerical analysis, nor for other fields of numerical analysis.

Report abuse