PhD student position in Numerical modelling of vibrational effects..

Updated: 2 months ago
Job Type: FullTime
Deadline: 31 Mar 2024

14 Feb 2024
Job Information
Organisation/Company

Chalmers University of Technology
Research Field

Engineering » Mechanical engineering
Researcher Profile

First Stage Researcher (R1)
Country

Sweden
Application Deadline

31 Mar 2024 - 22:00 (UTC)
Type of Contract

Temporary
Job Status

Full-time
Is the job funded through the EU Research Framework Programme?

Not funded by an EU programme
Reference Number

304--1-12606
Is the Job related to staff position within a Research Infrastructure?

No

Offer Description

PhD student position in Numerical modelling of vibrational effects on buildings from blasting

We are looking for a Ph.D. student who will model vibrational effects in structures from nearby blasting activities such as tunnel constructions. The aim is to improve our understanding of the connection between ground vibrations and damages to structures. By using numerical modelling in conjunction with experimental data, more reliable predictions are sought that leads to more efficient blasting processes that enables temporal, economic and environmental savings.

Project description
Blasting in rock induces ground vibrations, which in turn may cause structural damage to nearby buildings. The Swedish Standard states guidelines for vibration values that are permitted to avoid such damages. These guidelines are sometimes considered obsolete and criticisms have been raised concerning their validity. Thus, there is a desire to update these standards based on more modern findings. This project aims to provide a deeper physical understanding of the connection between ground vibrations and damage to structures. Eventually, the project is expected to contribute to a revision of the current guidelines in Swedish Standard regarding blast-induced vibrations in buildings.

This PhD project mainly aims at developing numerical models that describe the impact on buildings from ground vibrations. This includes studying and evaluating the effects from various parameters (material, geometry, amplitude, frequency, etc). The modeling is mainly based on finite element models (FEM). These calculations will be performed in both 2D and 3D, and are primarily based on linear elastic models. Both time and frequency analysis are to be studied. Calculations will include structural effects at both a "global" level (eigenfrequencies, mode shapes) and a "local" level (strains). The models are calibrated and compared primarily with existing experimental blast data on simple test buildings in Norway as well as from full-scale tests in Sweden, France and the USA. Additional experimental tests are possible during the course of the project based on results obtained and needs identified from the project.

Information about the division and the department
The research is part of a joint collaboration in the applied mechanics field comprising the division of Dynamics at the department of Mechanics and Maritime Sciences (M2), and the division of Structural Engineering at the Department of Architecture and Civil Engineering (ACE). These divisions have long time expertise in supplementary areas relevant to the project, including modelling of wave propagation effects from blasting activities (M2 Dynamics) and its structural impact on nearby buildings (ACE Structural Engineering). In addition, the project also involves Luleå University of Technology (LTU) and Norwegian Geotechnical Institute (NGI). These partners participate with expertise linked to rock engineering (LTU) and experimental measurements (NGI).

Expertise from industry is included through a reference group consisting of representatives from NCC, Skanska, Trafikverket and others. This ensure societal relevance for the project, as well as providing an important network academy-industry. The project is financed by two national foundations: the Rock Engineering Research Foundation (BeFo) and the Development Fund of the Swedish Construction Industry (SBUF).

Major responsibilities
Your major responsibility will be to carry out the PhD project within solid dynamics. This includes developing scientific concepts and communicating research results both verbally and in writing. This includes presenting at international conferences (scientific, industrial) and publishing in scientific journals and reports. You will have the opportunity to influence the details of the research towards the needs of the project, developing theoretical and numerical modelling based on experimental results. As a doctoral student, you will participate in doctoral courses following the syllabus of the Graduate School in Solid and Structural Mechanics.

Read more about doctoral studies at Chalmers here .

Qualifications
The successful applicant has a good knowledge of solid mechanics and enjoys numerical modelling. A suitable background is a Master of Science in Mechanical or Civil Engineering or an equivalent degree. Good knowledge in finite element analysis of structures is required, and a specialization in structural dynamics or concrete structures is meritorious. Also good if you have some experience of data processing and commercial finite element software, e.g. COMSOL Multiphysics.
We will evaluate all candidates after the deadline. We will not pre-review applications sent by email, thus please ensure that you have provided all required information through the online application system!

To qualify as a PhD student, you must have a master's level degree corresponding to at least 240 higher education credits in a relevant field.

The position requires sound verbal and written communication skills in English. If Swedish is not your native language, Chalmers offers Swedish courses.

Contract terms
The position is a full-time temporary employment limited to 4.5-5 years including teaching or other departmental duties corresponding to 10-20% of working hours. You will be employed by Chalmers and will receive a salary according to current salary agreements.

For more information about what we offer and the application procedure, please visit Chalmers website.


Requirements
Research Field
Engineering
Education Level
Master Degree or equivalent

Languages
ENGLISH
Level
Excellent

Research Field
Technology » Other
Years of Research Experience
None

Additional Information
Work Location(s)
Number of offers available
1
Company/Institute
Chalmers University of Technology
Country
Sweden
City
Göteborg
Postal Code
41296
Street
Chalmers Tekniska Högskola

Where to apply
Website

https://www.chalmers.se/en/about-chalmers/work-with-us/vacancies/?rmpage=job&rm…

Contact
City

Göteborg
Street

Chalmers Tekniska Högskola
Postal Code

41296

STATUS: EXPIRED

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