03/11/2020
The Human Resources Strategy for Researchers

Two postdoctoral positions in computational mechanics of materials and structures at the Faculty of Civil Engineering, Czech Technical University in Prague


  • ORGANISATION/COMPANY
    Czech Technical University in Prague
  • RESEARCH FIELD
    EngineeringCivil engineering
    EngineeringMechanical engineering
    MathematicsApplied mathematics
    MathematicsComputational mathematics
  • RESEARCHER PROFILE
    First Stage Researcher (R1)
    Recognised Researcher (R2)
  • APPLICATION DEADLINE
    05/12/2020 22:00 - Europe/Brussels
  • LOCATION
    Czech Republic › Prague 6
  • TYPE OF CONTRACT
    Temporary
  • JOB STATUS
    Full-time
  • HOURS PER WEEK
    40
  • OFFER STARTING DATE
    01/03/2021
  • REFERENCE NUMBER
    FSV1, FSV3

OFFER DESCRIPTION

The Czech Technical University in Prague, Faculty of Civil Engineering, invites applications for two postdoctoral positions in computational mechanics of materials and structures.

Project in brief

The openings are a part of the “International Mobility of Academics and Researchers” Call no. CZ.02.2.69/0.0/0.0/18_053/0016980, supported by the “Operational Programme Research, Development, and Education” of the Ministry of Education, Youth, and Sports of the Czech Republic. The call aims at strengthening the Czech Technical University (CTU) in Prague’s international research activities by offering fully-funded research stays for high-quality post-doctoral candidates. During their stay, the postdoc will be supervised by an academic mentor, specifically Milan Jirásek or Jan Zeman, both from the Department of Mechanics, Faculty of Civil Engineering, CTU in Prague, and included in the mentor’s research group.

Objectives

The following four topics are offered under the auspices of this project:

Correspondence between nonlocal/gradient elasticity and discrete models (Milan Jirásek)

Discrete mechanical models directly involve a length scale dictated by the size or spacing of individual elementary units (particles), and the presence of this length scale leads to various types of size effects, e.g., to dispersion of elastic waves containing multiple wavelengths. On the other hand, the standard elastic continuum does not involve any length parameter and thus cannot capture the size effects. Many generalized continuum theories with nonlocal or gradient-type enrichments have been proposed in the literature. This research project will focus on the links between discrete and continuum models and on identification and possible refinement of those approaches that can reproduce size effects in a realistic way. Potential applications include nanobeams or nanoplates. The work will be done in collaboration with Martin Horák (CTU Prague).

Identification of inelastic properties of thin films from the bulge test (Milan Jirásek)

In the bulge test, a thin material layer (or a bi-layer composed of two different materials) is loaded laterally by hydrostatic pressure induced by a fluid, and the deflections at a grid of reference points are recorded during a loading program, which may involve loading-unloading cycles of variable magnitudes. The objective of the proposed research program is to identify material properties by fitting the measured data using a suitable computational model based on membrane theory for large strains. An elastic parameter dependent on Young’s modulus and Poisson’s ratio can be extracted from the response at low loading levels quite easily, but separate identification of two elastic constants is more difficult and requires test results obtained for two different geometries. The real challenge is the extension to elastoplasticity, which is needed to capture the response at moderate and high loading levels. The work will be performed in collaboration with Martin Horák (CTU Prague) and with the group of Tomáš Kruml (Institute of Physics of Materials, Czech Academy of Sciences).

Development of efficient spectral homogenization solvers (Jan Zeman)

Moulinec and Suquet laid the foundations of FFT-based spectral homogenization solvers in their seminal works in the late 1990s. Since then, the topic has evolved into a rich research area at the interface between micromechanics of materials and numerical mathematics. Within this topic, you will contribute to developing a new generation of these solvers, harnessing our recent theoretical findings on the finite element method with the Laplace preconditioning. Depending on your background, our efforts will focus on further theoretical developments, mostly in estimating discretization and algebraic errors, or on contributing to an open-source project muSpectre. In pursuing these goals, you will collaborate with Martin Ladecký, a Ph.D. candidate at CTU, with Ivana Pultarová (CTU in Prague) on theoretical aspects, or with Till Junge (EPFL) on software development.

Modular-topology optimization of materials and structures (Jan Zeman)

Designing optimal structures that consist of a given number of repeating blocks (modules) is a recently emerged branch of topology optimization with applications in, e.g., the design of prefabricated structures or non-periodic structured (meta)materials. Your expected activities in this topic will comprise the extension of our recent pilot results for truss structures to geometrically linear and non-linear continua or different physical phenomena such as heat conduction. Optionally, you may combine these activities with the exploration of polynomial optimization techniques in structural optimization. You will conduct these research activities in collaboration with Marek Tyburec, a Ph.D. candidate at CTU in Prague.

Upon a previous agreement with the prospective supervisor, alternative topics can be proposed by candidates.

Your contributions to this project will involve:

  • Carrying out independent research in collaboration with the advisor and their group,

  • Supervision of perspective Bachelor- and Master-level students working on the project,

  • Presenting project results in peer-reviewed journal papers,

  • Active participation in at least three research seminars or workshops organized at the Czech Technical University in Prague.

More Information

Benefits

We offer

  • The possibility of working on contemporary research problems in applied and computational mechanics in collaboration with experienced advisors,
  • A 13-month full-time contract,
  • A super-gross income of 84,518 CZK per month (includes the salary, social and medical insurance), equivalent to about 3,100 EUR or 3,600 USD1,
  • Family allowance bonus income of 12,908 CZK per month (includes the salary, social and medical insurance), equivalent to about 450 EUR or 550 USD2,
  • 30 days of paid annual leave, catering allowance, language courses, and institutional childcare.

1 According to Czech law, the resulting net monthly salary will be about 45,000 CZK, which is equivalent to 1,650 EUR or 2,000 USD. For comparison, the median net salary in the Czech Republic is about 21,000 CZK (equivalent to 800 EUR or 900 USD).

2 With the family allowance, the net salary will increase to about 52,000 CZK (equivalent to 1,900 EUR or 2,200 USD).

Eligibility criteria

The candidate eligibility criteria as per the call requirements are as follows:

  • Ph.D. degree (or equivalent) issued in the last seven years,
  • At least two-year research experience outside of the Czech Republic in the last three years,
  • At least two publications in peer-reviewed international research journals in the last three years.

All time eligibility periods are relative to the start of the employment, and are entitled to extension by a documented paternal leave, long-term illness (longer than 90 days), family member care (longer than 90 days), pre-medical training, and military service.

Selection process

Interested candidates are invited to send their applications directly to Ludmila Kříštanová via ludmila.kristanova@fsv.cvut.cz and a carbon copy to the respective advisor (Jan Zeman or Milan Jirásek). The application must contain:

  • Academic curriculum vitae including a detailed list of publications,
  • Motivation letter (up to two pages), stating your research interests and a tentative plan of your stay at CTU in Prague, including measurable goals you would like to reach within the 13-month period,
  • At least two letters of recommendation from academic colleagues,
  • Copy of the Ph.D. diploma or the expected date of Ph.D. completion,
  • Consent with the processing of personal data related to this competition.

Please explicitly mention the position acronyms FSV3 and FSV1 for topics offered by Milan Jirásek or Jan Zeman, respectively, in your motivation letter.

 

We reserve the right not to consider incomplete applications.

 

International as well as Czech researchers are encouraged to apply. A review of applications will begin immediately and continue until 5 December 2020. The starting date is expected to be no earlier than Q1/2021 and will depend on anti-Covid measures in the Czech Republic. Selected candidates will be invited for a remote interview by the potential advisors and the final decision will be reached by an independent selection committee by 5 January 2021.

Additional comments

For more information

Offer Requirements

  • REQUIRED LANGUAGES
    ENGLISH: Excellent

Skills/Qualifications

We are looking for candidates who:

  • Hold a Ph.D. degree (or equivalent) in the research area related to the opening,
  • Have the ability to perform independent research, with a strong emphasis on prior English-language publications in high-quality refereed journals,
  • Possess excellent communication skills and written/verbal knowledge of English.

Specific Requirements

 

 

Map Information

Job Work Location Personal Assistance locations
Work location(s)
2 position(s) available at
Faculty of Civil Engineering, Czech Technical University in Prague
Czech Republic
Prague 6
166 29
Thákurova 7

EURAXESS offer ID: 573988

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