JMPS link: https://www.sciencedirect.com/science/article/pii/S0022509619304405?dgcid=raven_sd_aip_email
Arxiv link to full text: https://arxiv.org/abs/1905.08485
An Adaptive Quasi-Continuum Approach for Modeling Fracture in Networked Materials: Application to Modeling of Polymer Networks
Hi everybody,
I have a very basic question. Is it possible to define the deformation gradient as a state variable in VUMAT and visualize it through SDV? If yes can you please suggest how to definr state variable? Thanks in advance!
2 funded PhD positions are available immediately. The research is on computational mechanics and materials relating to nuclear materials, energy storage materials, biomaterials, and composite materials. Temple University is located in Philadelphia, the sixth-most populous U.S.
Duke University will host on April 24, 2020 the 31th Annual Robert J. Melosh Competition for best papers by graduate (or recently graduated) students.
The deadline for extended abstract submission is January 20, 2020.
Students interested in participating can find more details about the format of the competition and submission requirements at
http://www.cee.duke.edu/melosh
and
The Department of Civil Engineering at Stony Brook University has started a search for 3 tenure-track faculty positions at the assistant professor or associate professor level with a desired start date of September 2020. We seek to fill the positions (one each) in the following areas:
1. Geotechnical Engineering. For this position, we are primarily interested in applicants who have expertise in energy geotechnics and coastal geotechnics. Also of interest is environmental geotechnics.
We present a one-dimensional variant of the Irving-Kirkwood-Noll procedure to derive microscopic expressions of internal contact force and moment in one-dimensional nanostructures. We show that these expressions must contain both the potential and kinetic parts: just the potential part does not yield meaningful continuum results. We further specialize these expressions for helically repeating one-dimensional nanostructures for their extension, torsion and bending deformation. As the Irving-Kirkwood-Noll procedure does not yield expressions of stiffnesses, we resort to a thermodynamic equilibrium approach to first obtain the Helmholtz free energy of the supercell of helically repeating nanostructures. We then obtain expressions of axial force, twisting moment, bending moment and the associated stiffnesses by taking the first and second derivatives of the Helmholtz free energy with respect to conjugate strain measures. The derived expressions are used in finite temperature molecular dynamics simulation to study extension, torsion and bending of single-walled carbon nanotubes and their buckling.
The article will soon appear in the Mathematics and Mechanics of Solids. The same can be accessed at the following link: https://www.researchgate.net/publication/337873624_Microscopic_definiti…
Dear Colleagues:
We cordially invite your participation in the mini-symposium
“Advances of Machine Learning in Material Design, Modeling and Processing” (MS226)
at the 14th World Congress on Computational Mechanics (WCCM XIV) to be held on July 19-24, 2020 in Paris, France. This is a great opportunity for researchers, graduate students and post docs who are working on this emergent field to share their experiences and discuss on recent progress.
Fully funded PhD positions in the area of meta-materials, computational mechanics and wave propagation available in the Department of Mechanical and Nuclear Engineering at Kansas State University. Research will be in topics related to the mechanics of metamaterials and the mechanics of amorphous or granular media.
Students often have a tough time understanding the crack driving force in an elementary course on fracture mechanics.
A recent free access article has been published on a fluid analogy to the crack driving force and the Riabouchinsky free streamline problem for ideal fluid flow around two plates. Hopefully this analogy can aid in the visualization.
The URL where this article can be downloaded is found at 10.1515/jmbm-2019-0011
