Zheng Jia, Teng Li, Intrinsic stress mitigation via elastic softening during two-step electrochemical lithiation of amorphous silicon, Journal of the Mechanics and Physics of Solids, 91, 278–290, (2016) (DOI:10.1016/j.jmps.2016.03.014)
Predicting the rate at which dislocations overcome obstacles is key to understanding the microscopic features that govern the plastic flow of modern alloys. In this spirit, the current manuscript examines the rate at which an edge dislocation overcomes an obstacle in aluminum. Predictions were made using different popular variants of Harmonic Transition State Theory (HTST) and compared to those of direct Molecular Dynamics (MD) simulations. The HTST predictions were found to be grossly inaccurate due to the large entropy barrier associated with the dislocation–obstacle interaction.
The 2016 winner of the Robert J. Melosh Medal is Maruti Kumar Munuduru, with the paper “Structure-Preserving Finite Element Formulations for Advective-Diffusive-Reactive Systems.” Maruti earned a Ph.D. Degree from the University of Houston, and is currently a post-doctoral appointee at Los Alamos National Laboratory.
The other five finalists in the competition were (in alphabetical order):
Recent Progress in Curvilinear Electronics and Mechanics
Jianliang Xiao
Department of Mechanical Engineering, University of Colorado Boulder
1. Introduction
Discrete dislocation dynamics simulations were performed to investigate the dislocation microstructure evolution and cyclic hardening during the early stages of fatigue loading in nickel single crystals. The effects of the crystal size and initial dislocation densities on both the mechanical response and the evolution of dislocation microstructure were quantified. Crystals having an initial dislocation density of 1012 m−2 and diameter less than do not show any dislocation density multiplication or cyclic hardening.
We have PhD student positions available who are interested in soft tissue biomechanics of the brain. Work will involve developing sophysticated, yet efficient computational models of the human brain to study the mechanisms of brain injury. This work is supported by NIH grants.
In addition, we have openings for visiting students or visiting scholars who have their own funding to stay in the lab.
Interested applicants please contact: Songbai.Ji [at] dartmouth.edu
For visiting positions, please clarify your funding sources and the eligibility to work in the lab.
Akanksha Garg, Craig Maloney
(accepted mannuscript in Journal of Mechanics and Physics of Solids)
These fragments of notes are intended for a course on fracture mechanics, but I have always run out of time, and have never managed to go over them in class. Some of the ideas are mentioned in various parts of the class. I have also listed refeences and review articles.
We would like to invite you to submit abstracts to the symposium on Mechanics and Electrochemistry of Energy Materials at the 53rd Annual Technical Meeting of the Society of Engineering Science (SES 2016) to be held at University of Maryland College Park (October 2-5, 2016).
Symposium Description
The stress intensity factor and Young's Modulus
It is evident that stress intensity factor considered as the most important factor in fracture mechanics which used for evaluating the stress state near to tip crack . However this factor depends up many parameters (such us normal loading, cracks size and its geometry). my question is as follow
The stress intensity factor is depend of Young's modulus, How to identify the effect of Young's modulus on the variation of stress intensity factors.
