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Caglar Oskay's picture

Postdoc Position at Vanderbilt University Multiscale Computational Mechanics Lab

We welcome applications for a post-doctoral position in the Multiscale Computational Mechanics Laboratory (MCML) at Vanderbilt University. MCML is a part of the interdisciplinary Multiscale Modeling and Simulation (MuMS) facility.

PhD studentship on Validation of crystal plasticity models in 3D policrystals at Portsmouth University (UK)

Fatigue life prediction in the aerospace components relies on fracture mechanics for relatively long cracks (>1mm). Nevertheless, most of the fatigue life is spent while the crack is relatively short (<1mm). However life of short cracks is far from well understood leading engineers to apply over conservative safety factors which involves environmental and economic losses. The material microstructure is responsible for the large life uncertainty in short cracks.

Ali Ramazani's picture

Development and application of a microstructure-based approach to characterize and model failure initiation in DP steels using XFEM

We develop a microstructure-based model to characterize and model failure initiation in DP steels using an extended finite element method (XFEM) to simulate martensite cracking on the mesoscale combined with representative volume element (RVE) modeling. A mini tensile test with digital image correlation (DIC) analysis is linked to local SEM analysis to identify the local strain at which failure is initiated.

Multiple postdoctoral associate positions in virtual surgery at RPI

Description & Requirement
The Center for Modeling, Simulation and Imaging in Medicine (CeMSIM) at Rensselaer Polytechnic Institute, Troy, NY, USA invites applications for multiple postdoctoral associate positions to work on projects funded by the NIH on developing virtual surgery technology.  The ideal candidate will develop the next generation surgical simulation technology  based on advanced physics-based computational methods and robotic systems in collaboration with surgeons at Harvard Medical School.

chiqun's picture

A non-traditional view on the modeling of nematic disclination dynamics

Chiqun Zhang          Xiaohan Zhang         Amit Acharya          Dmitry Golovaty          Noel Walkington

Nonsingular disclination dynamics in a uniaxial nematic liquid crystal is modeled within a mathematical framework where the kinematics is a direct extension of the classical way of identifying these line defects with singularities of a unit vector field representing the nematic director. It is well known that the universally accepted Oseen-Frank energy is infinite for configurations that contain disclination line defects. We devise a natural augmentation of the Oseen-Frank energy to account for physical situations where, under certain conditions, infinite director gradients have zero associated energy cost, as would be necessary for modeling half-integer strength disclinations within the framework of the director theory. Equilibria and dynamics (in the absence of flow) of line defects are studied within the proposed model. Using appropriate initial/boundary data, the gradient-flow dynamics of this energy leads to non-singular, line defect equilibrium solutions, including those of half-integer strength. However, we demonstrate that the gradient flow dynamics for this energy is not able to adequately describe defect evolution. Motivated by similarity with dislocation dynamics in solids, a novel 2D-model of disclination dynamics in nematics is proposed. The model is based on the extended Oseen-Frank energy and takes into account thermodynamics and the kinematics of conservation of defect topological charge. We validate this model through computations of disclination equilibria, annihilation, repulsion, and splitting. We show that the energy function we devise, suitably interpreted, can serve as well for the modeling of equilibria and dynamics of dislocation line defects in solids making the conclusions of this paper relevant to mechanics of both solids and liquid crystals.

Amit Acharya's picture

A microscopic continuum model for defect dynamics in metallic glasses

Amit Acharya                       Michael Widom

Motivated by results of the topological theory of glasses accounting for geometric frustration,
we develop the simplest possible continuum mechanical model of defect dynamics in metallic
glasses that accounts for topological, energetic, and kinetic ideas. The model is aimed towards
the development of a microscopic understanding of the plasticity of such materials. We discuss
the expected predictive capabilities of the model vis-a-vis some observed physical behaviors of
metallic glasses.

Stephan Rudykh's picture

[Call for abstracts] 3D Printed Soft Materials, ASME IMECE 2016

Dear Colleagues,

Please be reminded that this year IMECE runs with two abstract submission deadlines. 

ASME Conference: Constitutive Modeling of Biological Tissues

Dear Colleagues, 


On behalf of the ASME Mechanics for Biology and Medicine  Technical Committee and Constitutive Equations Technical Committee, I cordially invite you to submit an abstract to the following track:


12-9 Constitutive Modeling of Biological Tissues 


The ASME/IMECE 2016 will be held from November 11 to November 17, 2016 in Phoenix, AZ (


Abstract submission deadline: March 07, 2016


Thank you,

Shadow Huang

Simpleware Boston Seminars: Wednesday Mar 16 2016

Introduction and Live Demo

3D Image Visualization, Analysis and Model Generation with Simpleware

Date: Wednesday, March 16, 2016

Time / Venue: 10:30am - 12:00pm: Boston Marriott Cambridge, 50 Broadway, Cambridge, MA 02142 

Time / Venue: 2:00pm - 3:30pm: Regus Newton, Riverside Center, 275 Grove St #2, Newton, MA 02466    

Who should attend

Jie-Hua Zhao's picture

FEM Job Opportunity at Apple

We are looking for a self-motivated individual who is proficient in FEM simulation with multi-year hands-on experience of FEM software ASNSY or ABAQUS. The individual should also be an expert programer of numerical simulation tools, such as Matlab and Python.

Key Qualifications 

Temporary Researcher Positions in Mechanical Engineering - University of California, Santa Barbara

The Department of Mechanical Engineering invites applications for temporary research positions in the Specialist, Project Scientist, and Researcher titles. This is a pooled recruitment, and appointments are subject to availability of funding and departmental needs, and may be part-time or full-time. Screening of applicants will occur as needed, for full consideration apply by March 2, 2016.

Ashfaq Adnan's picture

2016 ASME IMECE Call for Papers: Track 12-15 Failure and Fracture of Additively Manufactured Materials

Additive manufacturing or commonly known as 3D printing is a manufacturing technique that builds 3D objects by adding materials layer-by-layer.

PhD position in 3D printing of Alloys, microstructure and in-situ mechanical testing at Imperial College London

We are inviting motivated candidates for an EPSRC PhD studentship in the exciting fields of 3D printing, microstructural investigation and in-situ mechanical testing of metallic alloys at Imperial College London. The studentship includes fees and a bursary for suitable UK/EU nationals for the duration of 3 years. The expected start date is 1st October 2016.

Post-doctoral fellow at University of California San Francisco Medical Center and San Francisco VA

The Cardiac Biomechanics Laboratory at the University of California San Francisco Medical Center (UCSF) Division of Cardiothoracic Surgery and San Francisco VA Medical Center is seeking a hard working, motivated post-doctoral fellow to participate in biomedical engineering research involving the ascending thoracic aortic aneurysms (aTAA).  The post-doctoral fellow should be motivated to be on a career track to become an academic professor.  Our lab is NIH funded to investigate the biomechanics of aortic aneurysms and currently has 2 postdoctoral fellows, and are seeking a 3rd.  The goals ar

ludovicnoels's picture

PhD position in computational fracture mechanics


The CM3 lab, is looking for a PhD student to developed advanced fracture models.

Your profile

We are looking for holders of an MSc title (or who will receive their MSc title before the start of the project) or students who have received at least 300 ECTS.

ludovicnoels's picture

3 PhD positions in Computational Mechanics in Belgium and Luxembourg


Profs. Thierry J. Massart (Universite Libre de Bruxelles), Ludovic Noels (Universite de Liege) and Stephane P.A.
Bordas (University of Luxembourg) have recently been awarded a joint research project by the FNRS and FNR.
The project focuses on the mechanical behavior of discrete metallic materials, such as metal foams and printed metallic structures

PhD opportunities

Shaoxing Qu's picture

Journal Club Theme of March 2016: When mechanics meets medicine in the new age

Choose a channel featured in the header of iMechanica: 

Shaoxing Qu

Department of Engineering Mechanics, Zhejiang University, China



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