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EML Webinar on June 3, 2020 will be given by Prof. Rob Wood at Harvard University via Zoom meeting. Discussion leader: Rob Howe, Harvard.

Title: The mechanical side of artificial intelligence

A postdoctoral position in “Multi-Scale Modeling of Composites” is available in Tehrani Group in the Walker Department of Mechanical Engineering at UT Austin. The position starts in August 2020. The required qualifications for this position are as follows:

·       Acquired a Ph.D. in Mechanical Engineering or a closely related field before the position start date.

PhD position(s) is available immediately in the Engineering Mechanics program in Aerospace Engineering Department at Iowa State University to perform theoretical and computational part of work on NSF-funded projects on the interaction between phase transformations and plasticity. Phase-field, micromechanical, and macroscale simulations using FEM are of interest, in close collaboration with experiments. Please send vita to Prof. Valery Levitas (vlevitas@iastate.edu).

Interested in deep learning, scientific computations, solution, and inversion methods for PDE? 

Check out the preprint at: 

https://www.researchgate.net/publication/341478559_SciANN_A_Keras_wrappe...

Amit Acharya

(to appear in Comptes Rendus Mécanique)

A continuum model of fracture that describes, in principle, the propagation and interaction of
arbitrary distributions of cracks and voids with evolving topology without a 'fracture criterion'
is developed. It involves a 'law of motion' for crack-tips, primarily as a kinematical consequence
coupled with thermodynamics. Fundamental kinematics endows the crack-tip with a topological
charge. This allows the association of a kinematical conservation law for the charge, resulting
in a fundamental evolution equation for the crack-tip field, and in turn the crack field. The
vectorial crack field degrades the elastic modulus in a physically justified anisotropic manner.
The mathematical structure of this conservation law allows an additive 'free' gradient of a scalar
field in the evolution of the crack field. We associate this naturally emerging scalar field with the
porosity that arises in the modeling of ductile failure. Thus, porosity-rate gradients affect the
evolution of the crack-field which, then, naturally degrades the elastic modulus, and it is through
this fundamental mechanism that spatial gradients in porosity growth affect the strain-energy
density and stress carrying capacity of the material - and, as a dimensional consequence related
to fundamental kinematics, introduces a length-scale in the model. A key result of this work is
that brittle fracture is energy-driven while ductile fracture is stress-driven; under overall shear
loadings where mean stress vanishes or is compressive, shear strain energy can still drive shear
fracture in ductile materials.

The paper can be found here

Description

https://doi.org/10.1016/j.intermet.2020.106844

Abstract

Published in Phys. Rev. Research: https://journals.aps.org/prresearch/abstract/10.1103/PhysRevResearch.2.023187

Call for applications: PhD in computational mechanics

Title: Multi-scale mechanisms of thermo-mechanical frictional contact

Supervisors: V.A. Yastrebov, C.M. Ovalle Rodas, S. Forest

Thomas, M.S. Manju, K.M. Ajith, S.U. Lee and M. Asle Zaeem. Strain-induced work function in h-BN and BCN monolayers.  Physica E: Low-dimensional Systems andNanostructures 123 (2020) 114180 (9 pages).  

Abstract

In the past decade, the development of theory has deeply revealed the electromechanical coupling deformation mechanism of dielectric elastomer (DE). Many theoretical predictions on highly nonlinear deformation of dielectric elastomer have been verified by experiments. With the guidance of theory, the voltage-induced areal strain of dielectric elastomer has been increased from 100% in the pioneering work to the current record of 2200% and the energy density of a dielectric elastomer generator has reached 780 mJ/g.

EML Webinar on May 27, 2020 will be given by Prof. Norman Fleck at the University of Cambridge via Zoom meeting. Discussion leader: Vikram Deshpande, Cambridge.

Title: New Horizons in Microarchitectured Materials

A postdoctoral position on soft material ionotronics is available in the Silberstein lab (silbersteinlab.com) to start in late summer/early fall of 2020. Expertise in electrochemistry and/or continuum mechanics is desirable. The ideal candidate will also be familiar with polyelectrolytes, gels, and/or ionomers.

The University of Southern Denmark invites applications from qualified doctoral graduates for a 3-year postdoc position in the field of Soft Robotics.

The application deadline is 14th June, 2020 | Apply Online