An immediate fully-funded Ph.D. position is open in Advanced Hierarchical Materials by Design Lab at Louisiana Tech University on multiscale modeling of materials under extreme conditions. The project involves collaboration with the computational research groups at national labs, as well as experimental researchers from MIT and Georgia Tech to test and validate the models and codes.
I hope some of you may find this work interesting, the finite element code developed (Abaqus UEL subroutine) can be downloaded from www.empaneda.com/codes
A phase field formulation for hydrogen assisted cracking
Emilio Martínez-Pañeda, Alireza Golahmar, Christian F. Niordson
Computer Methods in Applied Mechanics and Engineering, 342, pp. 742-761 (2018)
I hope some of you may find this work interesting:
Size effects in elastic-plastic functionally graded materials
Tittu V. Mathew, Sundararajan Natarajan, Emilio Martínez-Pañeda
Composite Structures, 204, pp. 43-51 (2018)
https://www.sciencedirect.com/science/article/pii/S0263822318313928
Cardiff University invites applications for an Early Stage Researcher position (Doctoral Candidate) as part of the Rapid Biomechanics and Simulation for Personalised Clinical Design (RAINBOW) MCSA European Training Network. RAINBOW is funded under the European Union’s Horizon 2020 research and innovation programme. The post holder will undertake research on “Meta Modelling for Soft Tissue Contact and Cutting Simulation” leading to a PhD degree award. The post holder will develop numerical methods to simulate the deformations of soft-tissues in the context of computer-aided surgery.
We have always modelled crack propagation under monotonic/static loading in metals assuming isotropic hardening. However, we show that anisotropic/kinematic hardening effects play a significant role due to non-proportional straining with crack advance; the isotropic hardening idealization leads to steady state fracture toughness predictions that could be 50% lower. I hope that some of you find this work interesting.
Emilio Martínez-Pañeda, Norman A. Fleck. Crack Growth Resistance in Metallic Alloys: The Role of Isotropic Versus Kinematic Hardening.
I have 2 questions regarding GTN model.
1) What does q1, q2, q3 signify in GTN damage model? What are their physical meanings. I know only their numerical values.
2) How to deal with the problem of GTN in Compression? It is working fine with tension but while in compression it is unable to converge.
A 2 years post Doctoral position is avalaible in France, on material science numerical modeling fields. This is a join project between Univ. Lille (UMET lab), Paris 13 (LSPM lab), CEA (IRFM lab) and Marseille univ. (PIIM lab).
The present postdoc subject is focused on the modeling of the interactions between impurities (H, He...) and tungsten.
I hope some of you find this work interesting, the code with the control algorithm (Segurado and Llorca, 2004) to avoid convergence problems in cohesive zone model analyses of crack propagation can be downloaded from empaneda.com/codes (documentation and Abaqus input files are provided).
Non-local plasticity effects on notch fracture mechanics
Emilio Martínez-Pañeda, Susana del Busto, Covadonga Betegón
Theoretical and Applied Fracture Mechanics (2017)
The Composites Materials Group (http://www.materials.imdea.org/groups/cm/) at IMDEA Materials, led by Dr. Carlos González and Dr. Cláudio S. Lopes, invites applications for a PhD student position in the field of multiscale computational mechanics of advanced composites. Candidates with interest and knowledge on computational damage mechanics, model development, numerical simulation and optimization methods for advanced composite materials and structures are strongly encouraged to apply.
