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dislocations

Coupled phase transformations and plasticity as a field theory of deformation incompatibility

Submitted by Amit Acharya on

(to appear in International Journal of Fracture; Proceedings of the 5th Intl. Symposium on Defect andMaterial Mechanics)

Amit Acharya and Claude Fressengeas

5th International Symposium on Defect and Material Mechanics - Abstract Deadline January 30th 2011

Submitted by jsanz on

We are delighted to invite you to submit your contribution to ISDMM11. The conference will take place in Seville, Spain, June 27 – July 1st 2011.

Microcanonical Entropy and Mesoscale Dislocation Mechanics and Plasticity

Submitted by Amit Acharya on

(Journal of Elasticity, Carlson memorial Volume)

A methodology is devised to utilize the statistical mechanical entropy of an isolated, constrained atomistic system to define the dissipative driving-force and energetic fields in continuum thermomechanics. A thermodynamic model of dislocation mechanics is discussed. One outcome is a definition for the mesoscale back-stress tensor and the symmetric, polar dislocation density-dependent, Cauchy stress tensor from atomistic ingredients.

A new postdoc position is available

Submitted by Eran Bouchbinder on

A new postdoctoral position in continuum mechanics is available at the Weizmann Institute of Science. Candidates should have a strong background in physics and/or theoretical mechanics, as well as experience with analytical and computational methods for solving partial differential equations. Possible projects include the mechanics of frictional sliding, the mechanics of biomaterials, the mechanics of glassy materials and dislocation-mediated plasticity. Highly motivated candidates are requested to send their CV, publications list and statement of research interests to Dr.

Dislocation migration in carbon onions

Submitted by Jianyu Huang on

Phys. Rev. Lett. 105, 106102 (2010) 

What does a dislocation look like in a spherical geometry, and how does it migrate in such a structure? We report here the counterintuitive motion of the 1/2⟨0001⟩ edge dislocation in carbon onions from the outer surface to the inner core, i.e. from a low pressure surface to a high pressure core, rather than from the core to the surface as expected due to a surface image force. Maybe you can help us to explain this peculiar phenomenon.

PhD student or Postdoc position in Multiscale Modelling

Submitted by Steffen Brinckmann on

The
Interdisciplinary Centre for Advanced Materials Simulation (ICAMS) is
a new research centre at the Ruhr-University Bochum, Germany. At
ICAMS an interdisciplinary team of scientists from engineering,
materials science, chemistry, physics and mathematics is working on
the development and application of a new generation of simulation
tools for multi-scale materials modelling.

Position for Research staff member at Leibniz Universität Hannover, Germany

Submitted by Hirschberger on

The Graduate School MUSIC ("Multiscale Methods for Interface Coupling") and the

Institute of Continuum Mechanics at Leibniz Universität Hannover invites

applications for a position as a

Research Staff Member in Computational Mechanics

(Salary scale E13 TV-L)

to be appointed on 1 April 2010.

The position is embedded into the Junior Research Group on „Multiscale Modelling of

Materials and Interfaces with Size Effec
ts” and is initially limited to 1 year.