I want to model 1/4 part of cubic void cell which is subjected to combined tension and shear, Since its a part of RVE hence I need to apply periodic boundary conditions. I am trying to model the same model which is taken by Prof  Cihan Tekoglu in his paper "Representative volume element calculations under constant stress triaxiality, Lode parameter, and shear ratio" under same boundary conditions. I had applied all the boundary conditions mentioned in his paper in Appendix B, but still I get wierd deformed shape after simulation.

Through strain-induced morphological instability, protruding patterns of roughly commensurate nanostructures are self-assembled on the surface of spherical core/shell systems. A three-dimensional (3D) phase field model is established for a closed substrate. We investigate both numerically and analytically the kinetics of the morphological evolution, from grooves to separated islands, which are sensitive to substrate curvature, misfit strain, and modulus ratio between the core and shell.

Mechanics fundamentally governs the way cells and tissues adopt their functional shapes, the way they resist stresses, and the way they move, individually or collectively. In turn, mechanical forces critically influence cell behavior. Over the last decade, the field of mechanobiology has emerged, emphasizing the tight interplay between mechanics and biological function.

In our just published paper, we identify two ways to extract the energy (or power) flowing into a crack tip during propagation based on the power balance of areas enclosed by a stationary contour and a comoving contour. It is very interesting to find a contradiction that two corresponding energy release rates (ERRs), a surface-forming ERR and a local ERR, are different when stress singularity exists at a crack tip. Besides a rigorous mathematical interpretation, we deduce that the stress singularity leads to an accompanying kinetic energy at the crack tip.

Abstract

Two PhD positions and two postdoc positions are available at the University of Padua in the field of computational mechanics of materials. The work will involve building a multi-scale model to study contact, friction and lubrication.

For the PhD candidates, a Master Degree is required. Experience with programming is a requirement for PhD as well as postdoctoral applicants. Experience with dislocation dynamics and/or molecular dynamics simulations is appreciated.

Postdoc and PhD student positions are available at Arizona State University. Research background in at least one of the following areas is preferred.

1. Prognostics for fatigue and fracture

2. Probabilistic methods and reliability

3. Data analytics

4. Inverse problem and optimization

5. Dynamic system and network modeling

Title: Structural FEA Intern

Category: Internship in Industry

Employer: Schlumberger Technology Corporation

Location: Sugar Land, TX, USA

Opening Date: 04/27/2017

Our group has one postdoctoral position openings supported by Singapore University of Technology and Design(SUTD)-Digital Manufacturing and Design(DManD) Centre for the projects of multimaterial stereolithography for 3D/4D printing.

We are seeking self-motivated postdoctoral researchers with a Ph.D. degree on mechanical engineering, mechatronics, electronic engineering and the related fields.

The successful candidate is required to: