continuum mechanics

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

Amit Acharya and Claude Fressengeas

A PhD scholarship is available at DTU Mechanical Engineering, Section for Solid Mechanics, in the field of fatigue and wear in rolling and sliding contacts, with focus on computational stress and damage modelling. The department has well-established research activities in this field. The present scholarship is partly funded by the Danish Centre for Knowledge based Engineering for Improved Reliability of Critical Wind turbine Components (REWIND)  supported by the Danish Agency for Science, Technology and Innovation.

Hi,

I am writing to inform you about a new master in Computational Materials Science offered at TU Bergakademie Freiberg, Germany. It is an international master program, and all the lectures will be given in English.

To enhance multidisciplinary research, the program is open to students from different background, mechanical engineering, solid state physics and materials science.

Multiscale computation and modelling of granular materials
 

Granular materials are ubiquitous in nature and extensively utilized in many processes in civil, chemical, mechanical and mining industries.  Understanding and predicting granular material behaviour is vital for migrating natural hazards and for optimising industrial processes.  However, complexity arising from grain interactions poses considerable challenge to this task.  To date, there is no universal theory or model can describe granular material behaviour for a wide range of conditions.

(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 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.

Unofficial ERRATA and Commentary for
Continuum Mechanics for Engineers--3rd ed.
G. T. Mase, R. E. Smelser, and G. E. Mase, CRC, 2010
ISBN: 978-1-4200-8538-9 
http://www.amazon.com/exec/obidos/ASIN/1420085387/booksoncomposite 

See attachement; updated frequently.

It is with great sadness that I report the passing away of Prof. Don Carlson. The link below describes his life and work.

http://mechse.illinois.edu/content/news/article.php?article_id=410

Amit Acharya and Kaushik Dayal

 (To appear in Quarterly of Applied Mathematics)

This paper presents a generalization of traditional continuum approaches to liquid crystals and
liquid crystal elastomers to allow for dynamically evolving line defect distributions. In analogy with
recent mesoscale models of dislocations, we introduce fields that represent defects in orientational
and positional order through the incompatibility of the director and deformation ‘gradient’ fields.

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 Effects” and is initially limited to 1 year.

 (in Computational Methods for Microstructure-Property Relationships," Springer. Edited by Somnath Ghosh and Dennis Dimiduk)

Dislocation mediated continuum plasticity: case studies on modeling scale dependence, scale-invariance, and directionality of sharp yield-point

Claude Fressengeas, Amit Acharya, Armand Beaudoin

 Professor Naghdi's classnotes on continuum mechanics are posted at http://me.berkeley.edu/csml/other.html, and are also linked from my faculty page under "ME 185"

This paper revisits continua with microstructure from a geometric point of view. We model a structured continuum as a triplet of Riemannian manifolds: a material manifold, the ambient space manifold of material particles and a director field manifold. Green-Naghdi-Rivlin theorem and its extensions for structured continua are critically reviewed.

FACULTY POSITION
 
 
MECHANICAL ENGINEERING
COLLEGE OF ENGINEERING
UNIVERSITY OF CALIFORNIA, SANTA BARBARA
 
 

The main idea is the following: a most natural mathematical setup for considering the motion of the void-solid interface of an expanding void is that of the traveling wave. Thus, a theory for macroscopic damage evolution may be suspected as being a homogenized version of basic theory that has such wave phenomena as an essential ingredient. This paper is a first step in probing such questions. 

A three-year
PhD studentship is available within the Glasgow Research Partnership in
Engineering (GRPE) as part of the Joint Research Institute in Mechanics of
Materials, Structures and Bioengineering at the University of Glasgow. 
The
specific goals of the PhD will be to manufacture MREs and determine the
influence of manufacture conditions on the micro-structure and magnetic-sensitivity
of the magnetorheological elastomers (smart material).