Blog posts

EML Webinar on July 1, 2020 will be given by Prof. Chiara Daraio at Caltech via Zoom meeting. Discussion leader: Teng Li, University of Maryland.

Title: The mechanics of Robotic Matter

Time: 7 am California, 10 am Boston, 3 pm London, 10 pm Beijing on July 1, 2020

Zoom Link: https://harvard.zoom.us/j/271079684 

A formal hierarchy of exact evolution equations are derived for physically relevant space-time averages of state functions of microscopic dislocation dynamics. While such hierarchies are undoubtedly of some value, a primary goal here is to expose the intractable complexity of such systems of nonlinear partial differential equations that, furthermore, remain ‘non-closed,’ and therefore subject to phenomenological assumptions to be useful. It is instead suggested that such hierarchies be terminated at the earliest stage possible and effort be expended to derive closure relations for the ‘non-closed’ terms that arise from the formal averaging by taking into account the full-stress-coupled microscopic dislocation dynamics (as done in [CPZ+ 20]), a matter on which these formal hierarchies, whether of kinetic theory type or as pursued here, are silent.

An immediate Ph.D. position is available in the Predictive Computational Engineering (PCE) Lab in the Department of Mechanical and Aerospace Engineering. The research project aims at developing novel computational methods for predictive modeling and uncertainty quantification of biomimetic-inspired materials systems. Candidate should already be in the U.S. and must have a Master's degree in engineering or applied math. A strong background in computational and applied mechanics is desired. If interested, contact Dr.

Two postdoctoral positions are available in the laboratory of physical metallurgy in CEA Saclay (France) for two years starting this Fall 2020 to work either on the thermodynamic modeling of Ti-Zr-O alloys using ab initio calculations, or on the interaction between dislocations and precipitates in Zr-Nb alloys using molecular dynamics.


1) Modeling of Ti-Zr-O thermodynamics from ab initio calculations

Based on the newly released  2019 CiteScore™ values by Elsevier, Extreme Mechanics Letters received a CiteScore of 7.9, exemplifying

Dear Colleagues,

In the last twenty years, tribology and nonlinear dynamics have included several major contributions related to key topics such as rough contact, friction, damping mechanisms, and dynamical behaviour of nonlinear systems, which are paving the way for future engineering challenges. The two fields are largely intertwined as, among the others, contact nonlinearities are almost omnipresent in any technical application ranging from the development of NEMS/MEMS to bioengineering, automotive, civil/mechanical industry, and aerospace.