DYMAT News

09/18

French-German Research Institute of Saint-Louis
PhD degree or Master degree

The current needs for conception and optimisation of complex structures exposed to stress at high strain rates lead to the development of more and more sophisticated numerical models. Besides the purely numerical considerations necessary to obtain a reliable simulation, the most important aspect is modelling the material behaviour (deformation and rupture) at high strain rates and under complex stress conditions. Only an accurate description of the behaviour allows the detailed description of the mechanisms involved. The study conducted by the research engineer will focus in particular on the dynamic mechanical response of metallic materials during ballistic impacts. The aim is to develop numerical models based on material models suited to highly dynamic conditions. Those models have for example to take into account the evolution of the stress state during the perforation. Your scientific tasks: •Experimental study of material behaviour (complementary study on the deformation and more in-depth study of the failure) while taking into account their sensitivity to strain rates, confining pressure etc.(through quasi static tests, Hopkinson--bar test, etc.) •Identifying the constitutive models and failure criteria under the studied stress conditions; determining the involved parameters. Numerical inverse analysis. •Numerical modelling of conducted mechanical tests and ballistic impact. Validating the modelling of materials by comparing numerical and experimental results. •Promoting the scientific results (in articles, at conferences, in working groups, etc.) Your knowledge and experiences: • Knowledge in the field of finite element modelling (ABAQUS/Explicit, LS-Dyna) • Skills in mechanical characterization of materials at high strain rates •Knowledge in the field of mechanics of materials • Knowledge in the field of metallurgy •First professional experience in the field of the research strongly desired (Post-doc or private sector) Other skills: • Excellent French speaking and writing. English communication is a must. • Proactive, autonomous, inquisitive, dynamic, communicative personality.
Dr. Yaël Demarty

 
09/18

French-German Research Institute of Saint-Louis
Postdoc

Research scientist (m/f) in the field of dynamic mechanical behaviour of brittle materials The current needs for conception and optimisation of complex structures exposed to stress at high strain rates lead to the development of more and more sophisticated numerical models. Besides the purely numerical considerations necessary to obtain a reliable simulation, the most important aspect is modelling the material behaviour (deformation and rupture) at high strain rates and under complex stress conditions. Only an accurate description of the behaviour allows the detailed description of the mechanisms involved. Before evaluating the mechanical performance of a complex structure, it is necessary to study each of the materials used as components. The study conducted by the researcher will focus in particular on the dynamic mechanical response of brittle materials (like ceramics) under extreme stress during impacts. The aim is to make use of experimental and numerical tools that are necessary for the identification of suitable models of materials. Those models take into account the evolution of the stress state under highly dynamic conditions. Your new tasks and responsibilities – challenging and future-oriented: - Developing and validating new systems and tools for dynamic mechanical or impact testing - Experimental studies of material behaviour (deformation and rupture) while taking into account their sensitivity to strain rates, confining pressure etc.(through quasi static tests, Hopkinson--bar test, impact of plates, etc.) - Identifying the laws of behaviour and the criteria for rupture under the studied stress conditions; determining the involved parameters - Numerical simulation of conducted mechanical tests: validating the modelling of materials by comparing numerical and experimental results - Including problems associated with systems for ballistic protection, and working with the groups in charge of this topic at the ISL (multi-material composites, ballistic evaluation, definition of tests, etc.) - Guaranteeing the follow-up and management of the contractual research - Supervising students within the scope of internships and PhD theses - Working in a team with international and multicultural background - Drawing up progress and synthesis reports - Proposing and drawing up research projects - Developing collaborations with other laboratories in France and abroad - Promoting the scientific results (in articles, at conferences, in working groups, etc.) Your qualifications – solid and appropriate: - PhD degree in science - Skills in mechanical characterisation of materials at high strain rates, preferably ceramics - Knowledge in the field of mechanics of materials - Knowledge in the field of finite element modelling (ABAQUS/Explicit, LS-Dyna) - First professional experience in the field of the research strongly desired (Post-doc or private sector) - English communication is a must. Optional: Knowledge of French and/or German - Proactive, autonomous, inquisitive, dynamic, communicative personality.
Dr. Yaël Demarty

 
08/2018

6 fully funded PhD positions are open at TUT Faculty of Engineering. If you are interested doing a PhD in my Group, please contact me ASAP. Recent topics of interest include but are not limited to: Percussive drilling; rock and concrete mechanics, but also the development of the drill tools. We have several ongoing projects with the industry Effects of adiabatic heating on plasticity, microstructure development, and fracture Simultaneous high speed measurements of deformation and temperature using optical high speed cameras and high speed infrared cameras. Basically all materials – engineered or natural Anything that would combine in-situ mechanical testing (SEM + micro pillar compression) and larger scale macroscopic testing (e.g., Hopkinson Bar) would be extremely interesting! This topic I share with another professor who does the in-situ testing. Our group comprises currently 3 PhD students and 2 postdocs. Not too big, but there is still room to grow. We are a very international group, and currently I am
the only Finnish person in the group. Please forward this message to everyone who could be interested in applying. I will help candidates to apply with
a strong proposal.

More information at www.tut.fi/en/about-tut/careers-at-tut/open-positions
=> Faculty of Engineering Sciences

Mikko Hokka
Assistant Professor
ATE of Journal of Dynamic Behavior of Materials
DYMAT Governing Board Member
Tampere University of Technology
Department of Materials Science
POB 589, FI-33101 Tampere, Finland
mikko.hokka@tut.fi

 
11/2017

ISAE-SUPAERO Toulouse France
Faculty position – Research scientist in Dynamics of Structures and Materials

ISAE-SUPAERO, Toulouse, France, is seeking to hire a Research Scientist in Dynamics of Structures and Materials, see link below. The Researcher will conduct his scientific activities at Institut Clément Ader, Toulouse, France. The activities of the research scientist will be turned towards the experimental investigation and the nonlinear modelling of the multi-physic couplings at the origin of the energetic dissipation induced by viscoplasticity, viscoelasticity, dry friction, damage, heating, etc. These analyses will be applied to engineering materials (metals and alloys, polymers) subjected to * high strain/loading rate (impact, bird strike, etc); * and/or to vibrations (passive control of resonant and unstable systems, energy harvesting, etc). A multi-scale approach will allow the modeling of local phenomena modifying the global performances of the structure. The deadline for application is November 17th 2017.
Prof. Patrice Longère
https://www.researchgate.net/jobs/search/isae

 
09/2017


Tampere University of Technology offers 6 PhD positions for Engineering Sciences. One of the focus areas is Mechanical Testing and Mechanical Behavior of Advanced Engineering Materials. The students are selected based on their performance in their prior studies and academic potential. No detailed research plan is required, and the exact topic will be agreed later on with the supervisors, such as myself. Candidates should be interested in high strain rate testing, Digital Image Correlation, simultaneous IR and DIC measurements, microscopy, and modeling of material behaviour.  

www.tut.fi/en/about-tut/careers-at-tut/open-positions 

Please contact Dr. Mikko Hokka for more details:
Mikko Hokka
Tampere University of Technology
mikko.hokka@tut.fi
Tel:+358-40-8490132

 
08/2017


“Open access to JRC Research Infrastructures” 

The basic idea is that the European Commission’s Joint Research Centre (JRC) opens its scientific laboratories and facilities to people working in academia and research organisations, industry, small and medium enterprises (SMEs), and more in general to the public and private sector. This access will be on a competitive basis, as a group is expected to submit a proposal, which will be evaluated together with other proposals ...etc.

You can find the relevant press-release of our Commissioner
Mr. Tibor Navracsics at: 
http://europa.eu/rapid/press-release_IP-17-2002_en.htm.

Information about the conditions of access and details of the 1st Call for
proposals are included in the EU Science Hub page:
 
https://ec.europa.eu/jrc/en/research-facility/open-access.

It is to be noted that the ELSA-HOPLAB has been included in this 1st Call, which will remain open from 26 June until 20 October 2017.

More information concerning the technical capabilities of the facility can be requested to:  JRC-OPEN-ELSA@ec.europa.eu.

 
01/2016


The login and password to access DYMAT publications have changed:
https://www.dymat.org/members/publication_dymat_members.html

 

 

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DYMAT 2018
12th International DYMAT Conference
September 9-14, 2018
Palais des Congrès, Arcachon

This event is organized by DYMAT