Exploring the mechanisms of wave propagation in granular materials

About the Project

Shear wave propagation and associated velocity Vs, are fundamental in characterising the small-strain response of soils. In addition, the shear wave velocity is essential input information in the characterisation of soils under static and dynamic conditions and eventually, in the design of geotechnical structures.

The present study aims in exploring the mechanisms of wave propagation in dry and (ultimately) saturated granular materials on an interparticle level through the use of DEM. In particular, the first attempt to capture the problem with the use of DEM is going to be based on simple assumptions, which will gradually increase in complexity to incorporate more information with regards to the micro- and the macro- mechanics of the problem at hand, and link to actual soil conditions.

Being able to evaluate the shear wave velocity of the liquefied soil by means of DEM simulations and under various soil and excitation conditions is going to provide valuable insight into the behaviour of liquefied soils and allow us to potentially revisit some of the provisions of the existing design codes with regards to the considered shear wave velocity.

Academic qualifications

Have, or expect to achieve by the time of start of the studentship a first-class honours degree, or a distinction at master level, in Civil Engineering, Geology, Geophysics

English language requirement

IELTS score must be at least 6.5 (with not less than 6.0 in each of the four components). Other, equivalent qualifications will be accepted. Full details of the University’s policy are available online.

Essential attributes:

• Only a first-class honours degree, or a distinction at master level in a subject relevant to the PhD project will be considered, or equivalent achievements.
• Subject Knowledge: Soil mechanics, Geotechnical earthquake engineering, Geophysics
• Knowledge of theoretical soil mechanics and soil properties
• Basic knowledge and capability in setting up numerical simulations
• Knowledge of programming languages (C+ preferably)
• Capable of collecting and analysing data sets
• Good oral and written communication skills
• Good time management
• Strong motivation and commitment to research

Desirable attributes:

• Practical experience in research or industry will be considered an advantage.
• Laboratory experience in soil mechanics
• Earthquake engineering

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APPLICATION CHECKLIST

• Completed application form
• CV
• 2 academic references, using the Postgraduate Educational Reference Form (download)
• Research project outline of 2 pages (list of references excluded). The outline may provide details about
  1. Background and motivation of the project. The motivation, explaining the importance of the project, should be supported also by relevant literature. You can also discuss the applications you expect for the project results.
  2. Research questions or objectives.
  3. Methodology: types of data to be used, approach to data collection, and data analysis methods.
  4. List of references.

The outline must be created solely by the applicant. Supervisors can only offer general discussions about the project idea without providing any additional support.

• Statement no longer than 1 page describing your motivations and fit with the project.
• Evidence of proficiency in English (if appropriate)

To be considered, the application must use

• the advertised title as project title

For informal enquiries about this PhD project, please contact V.Dimitriadi@napier.ac.uk