iMechanica

In a pure liquid, molecules touch one another but change neighbors frequently.  External forces cause the liquid to change shape by viscous flow.  Thermal agitation causes  molecules to undergo self-diffusion.  The two phenomena--viscous flow and self-diffusion--often result from a single rate-limiting process:  molecules change neighbors.  This simple picture is amply confirmed by the Stokes-Einstein relation, which links the viscosity and self-diffusivity for many liquids over wide ranges of temperature.

All vacancies have been fulfiled.

Dear all

My project work is in crack analysis, so I used cohesive zone model for crack analysis in Abaqus.I implement the cohesive element in crack path but I don't known how to plot crack extension vs time(load, J-integral) curve.

Pls suggest the procedure for ploting crack extension curve.

thanks.

The Kang Group at Johns Hopkins University is looking for outstanding candidates to join the group. We have openings as below.

Postdoctoral Fellow

The Bioengineering Science Research Group at the University of Southampton invites applications for an 18 month post-doctoral position investigating the mechanical performance of unicondylar knee arthroplasty (UKA). 

Soft Matters, (2014) Advance article

It is our sincere pleasure to invite you to participate in the upcoming Malaysian International Tribology Conference 2015 (MITC2015). For quick information, feel free to watch our teaser at http://youtu.be/HwLON3uIz3M. For more details, you are kindly advice to visit our website at http://mitc2015.mytribos.org

Dear Colleagues,

You are welcome to submit abstracts to the workshop of  "International Workshop on Pattern Formation in Soft Materials" chaired by Prof. Zhigang Suo & Prof. Yibin Fu, which will be held from 1th to 4th of June 2015 in Tianjin, China.  More details could be got by clicking on http://www.iwsm2015.org/. Thanks for your attention.

Best wishes,

Yu-Xin XIE

Prof. Wei Cai at the Mechanical Engineering Department of Stanford University is seeking a postdoctoral researcher to lead a project on the modeling of grain structure evolution in the surface layer under friction.  The major task of this project is the development of a phase field model for grain/sub-grain structure evolution under friction.  It is likely that molecular dynamics and dislocation dynamics simulations would be required as well to obtain a good physical understanding of the process.

Two PhD positions are available immediately in the Computational Materials & Mechanics Laboratory at Missouri University of Science and Technology (Rolla):

1.  Density functional theory calculations: Advanced High Strength Steels

2.  Multi-phase field modeling: Boride Ceramics with Improved Fracture Toughness at Elevated Temperatures

Candidates should have a master's degree in mechanical engineering, materials science and engineering, solid-state physics, or applied mathematics. Experience in DFT, MD, or phase field modeling is desired.

The Department of Mechanical Engineering, Temple University, seeks applications and nominations— for: (i) tenure-track lines at the junior level, and (ii) tenured lines at the senior level.

We study some differential complexes in continuum mechanics that involve both symmetric and non-symmetric second-order tensors. In particular, we show that the tensorial analogue of the standard grad-curl-div complex can simultaneously describe the kinematics and the kinetics of motions of a continuum. The relation between this complex and the de Rham complex allows one to readily derive the necessary and sufficient conditions for the compatibility of the displacement gradient and the existence of stress functions on non-contractible bodies.

The Daniel Guggenheim School of Aerospace Engineering at the Georgia Institute of Technology in Atlanta, GA, invites nominations and applications for five tenure-track faculty positions. Applications are sought from candidates with expertise in the traditional aerospace disciplines, promising new research areas, and cross-cutting interdisciplinary fields. Areas of interest may include, but are not limited to, aerodynamics, design and manufacturing, structures and solid mechanics, and autonomy for aerospace systems.

As the importance of micromechanics is increasingly realized in composites design & manufacturing at the industry level, cdmHUB is launching a Micromechanics Simulation Challenge for the purpose of establishing the best practices for homogenization and dehomogenization needed in composites design and manufacturing.

The Department of Civil and Environmental Engineering invites applications for several tenure-track faculty positions to begin July 2015 or thereafter.  Appointments will be at the assistant or untenured associate professor level. In special cases, a senior faculty appointment may be possible.  We will consider exceptional candidates in a range of areas, broadly defined.  Further information about the department can be found at this page. 

We are looking for PhD candidates to conduct research at the following two interdisciplinary subfields, starting from Spring of 2015. Interested individuals are encouraged to apply (suz10@psu.edu)

1) Mechanics in electrochemistry. We develop atomistically informed continuum mechanics models, coupling mechanics and lithium reaction and diffusion to account for a wide range of in-situ experimental phenoemna. Some recent publications:

i want to know the material grade which is used in APPLE phones/laptop circuit chassis 

i know that aluminium is used .grade please????

Recent experiments showed that the Lode parameter, which distinguishes between axisymmetric and shear dominated stress states, has a profound effect on material ductility, especially at low stress triaxiality. Consequently, the theoretical framework for void growth and coalescence is currently being revisited, which often involve performing representative volume element (RVE) calculations. The present study investigates an RVE composed of a cubic unit cell containing a spherical void at its center.

3D numerical simulations of fatigue damage of multiscale fiber reinforced polymer composites with secondary nanoclay´reinforcement are carried out. Macro–micro FE models of the multiscale composites are generated automatically using Python based software. The effect of the nanoclay reinforcement (localized in the fiber/matrix interface (fiber sizing) and distributed throughout the matrix) on the crack path, damage mechanisms and fatigue behavior is investigated in numerical experiments.

The Department of Civil and Environmental Engineering at the George Washington University invites applications for a tenure-track faculty position at the level of Assistant Professor starting fall semester 2015. The primary field of interest is mechanics of geomechanical and structural systems. Applications from women and under-represented minority groups are strongly encouraged. 

Basic Qualifications

The attached notes are written for a course on plasticity.  I will update new posts on my twitter account:  https://twitter.com/zhigangsuo.  

Hi all,

We've recently published a paper on

Micromechanical Study of the Interface Properties in Concrete Repair Systems

It deals with nanoindentation and numerical simulation of the interface zone in concrete repair systems.

Greetings

http://hdl.handle.net/10993/12316

The attached notes are written for a course on plasticity.  I will update new posts on my twitter account:  https://twitter.com/zhigangsuo.  Rheology is the science of deformation. This science poses a question for every material: given a history of stress, how do we find the history of strain?

http://orbilu.uni.lu/handle/10993/17878

http://hdl.handle.net/10993/17878