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Wenbin Yu's picture

cdmHUb Hands-on Workshop for Composites Learning, Teaching and Research in the Cloud

Join us at the American Society for Composites 31st Technical Conference (Williamsburg, VA) for a hands-on workshop, on September 18, from 7:00–9:00pm, on how to use for composites learning, teaching, and research in the cloud. This workshop features an overview of the cdmHUB cyberinfrastructure, and how to use cdmHUB for learning, teaching, and research.

mohsenzaeem's picture

Competing mechanisms between dislocation and phase transformation in plastic deformation of single crystalline yttria-stabilized tetragonal zirconia nanopillars

Molecular dynamics (MD) is employed to investigate the plastic deformation mechanisms of single crystalline yttria-stabilized tetragonal zirconia (YSTZ) nanopillars under uniaxial compression. Simulation results show that the nanoscale plastic deformation of YSTZ is strongly dependent on the crystallographic orientation of zirconia nanopillars. For the first time, the experimental explored tetragonal to monoclinic phase transformation is reproduced by MD simulations in some particular loading directions.

Journal Club for September 2016: Developments and challenges in miniaturized in situ experiments – Towards small-scale fracture mechanics

Small-scale mechanics, especially in situ in electron microscopes, is what I enjoy spending my time with. Within this monthly journal club topic on iMechanica, I would like to give a quick recapitulation of what happened in micromechanics, of course with special emphasis to in situ techniques, over the last years to set the stage. Subsequently, we should revisit some longstanding issues before turning towards recent developments in the field of fracture testing.

marco.paggi's picture

Mini-symposium at ICF14 on "Fracture and contact in multiphysics problems: from energy to biological applications"

Dear Colleague,

I kindly inform you that, in the framework of the 14th International
Conference on Fracture (ICF14), to be held in Rhodes, Greece, June 18-23,
2017, we are organizing a mini-symposium on "Fracture and contact in
multiphysics problems: from energy to biological applications".

If you are interested, please submit your two-page abstract through the
ICF14 website ( by October 31, 2016, selecting our

Arttu Polojärvi's picture

Doctoral Candidate Position in Computational Ice Mechanics

We are looking for a doctoral student to join our Arctic Marine and Ice Technology research group at the Aalto University (Finland), Department of Mechanical Engineering, to study ice-structure interaction process in shallow water using numerical simulations.  In the complex ice-structure interaction process an intact ice sheet fails into discrete ice blocks, which affect further stages of the process. Realistic calculations of ice loads due to this process require modeling of the ice blocks and their pile-up process.


A paper by Kubelwa et al. (Statistical Modelling of Bending Stress in ACSR Overhead Transmission Line Conductors subjected to Aeolian Vibrations –I) reports data from vibration tests on 4 ACSR.  under  3 axial loads (20, 25 and 30% UTS). An 84.5 m conductor span is vibrated at various bending amplitudes and strain is measured near a clamped end (distance not given). Clamps are rigid square-faced bushings. Vibration amplitude is measured at 89 mm from bushing. Strain gages are glued on 3 adjacent top layer wires.

Workshop-Conference on Research Challenges in Mechanics: Applications of Automated Computational Modeling (RCM 2017)

This is the first call-for-contributions for the International Workshop-Conference Research Challenges in Mechanics: Applications of Automated Computational Modeling to be held between 01-03 March (2017) in Hannover (Germany).

For more information visit

Postdoctoral Associate

            The University of Notre Dame, Center for Shock Wave-processing of Advanced Reactive Materials (C-SWARM), is seeking a highly qualified candidate for the postdoctoral associate position in the area of computational mechanics/physics with emphasis on chemically reactive solids. C-SWARM is center of excellence established by National Nuclear Security Administration (NNSA) whose primary focus is on the emerging field of predictive science.

Post-doctoral positions in the Center for Advanced Research in the Engineering Sciences, and the Institute for Materials, Manufacturing, and Sustainment at Texas Tech, Lubbock, TX

I belong to the Lab of Professor Satya N Atluri  ( ).  Professor Atluri asked me to advertise in Imechanica that he will have 5 or 6 Post-doctoral positions in his labs, the Center for Advanced Research in the Engineering Sciences, and the Institute for Materials, Manufacturing, and

Shengqiang Cai will be the new editor of the iMechanica Journal Club

Shengqiang Cai, of the University of California at San Diego, will be the new editor of the iMechanica Journal Club.  He is an active researcher in the field of soft materials, and has made contributions to the development of theory, experiment, and computation.  He will be principally responsible for selecting the discussion leaders for themes in 2017.

Narasimham's picture

Prescribing Surface Strains to change Gauss curvature

Prescribing  Surface Strains to change Gauss curvature

To change Gauss curvature K of a surface we need to strain each differential shell element by virtue of Egregium theorem ( K is invariant if strain is zero in isometry mappings).

vicky.nguyen's picture

Postdoctoral position in Mechanical Engineering on Growth and Remodeling

Description:  Postdoc position in growth and remodeling in the Nguyen Lab, Department of Mechanical Engineering, The Johns Hopkins University


Zhigang Suo's picture


These notes are a part of the notes on linear algebra.

Zhigang Suo's picture

Imperfections in Crystalline Solids

Wei Cai and Bill Nix, of Stanford University, have just published a new textbook Imperfections in Crystalline Solids.  You can look at the first chapter at the website of the Cambridge University Press.  

ahmedettaf's picture

Modulating elastic band gap structure in layered soft composites using sacrificial interfaces

A wide range of engineered and natural composites exhibit a layered architecture whereby individual building blocks are assembled layer by layer using cohesive interfaces. We present a novel mechanism for evolving acoustic band gap structure in a model system of these composites through patterning the microstructure in a way that triggers non-planar interfacial deformations between the layers as they are stretched.

unnithan's picture

Two Tenure Track Faculty Positions (Assistant/Associate Professor), Department of Aerospace Engineering and Mechanics, The University of Alabama

The Department of Aerospace Engineering and Mechanics (AEM) at The University of Alabama invites applications for two tenure-track faculty positions in areas related to space/astronautics and unmanned aerial systems (UAS). The successful applicant for the space/astronautics position will contribute to the department’s emerging space technology research thrust. The successful applicant for the UAS position will contribute to a University-led effort to establish an airborne/spaceborne remote sensing center of excellence.

cemalbasaran's picture

A Nobel Prize worthy paper, unifying Mechanics and Thermodynamics with a mathematical basis

I highly recommend this paper to any mechanician who is familiar with the scientific efforst in the last 150 years to unify mechanics and thermodynamics. Sosnoskiy and Sherbakov and several others from the Russian Academy of Sciences listed in the Acknowledgemnsts have achieved it. Congratulations.

Sosnovskiy, L. Sherbakov, S.,”Mechanothermodynamic Entropy and Analysis of Damage State of Complex Systems”, Entropy, 2016, 18, 268.

A Unification of the Concepts of Variational Iteration, Adomian Decomposition and Picard Iteration method; and a Local Variational Iteration Method

This paper compares the variational iteration method (VIM), the Adomian decomposition method (ADM) and the Picard iteration method (PIM) for solving a system of first order nonlinear ordinary differential equations (ODEs). A unification of the concepts underlying these three methods is attempted by considering a very general iterative algorithm for VIM. It is found that all the three methods can be regarded as special cases of using a very general matrix of Lagrange multipliers in the iterative algorithm of VIM.

Kun Zhou's picture

Postdoctoral positions at Nanyang Technological University, Singapore

We are looking for two postdoctoral researchers to work on the following topics at Nanyang Technological University, Singapore.  

1. Modeling the welding process using finite element method.  

2. First-principles calculations of novel nanomaterials for energy harvesting applications.  

Why two different heaviside enrichment functions used in XFEM?

I have been looking at XFEM literature for a while and wondering why do we need 2 different heaviside enrichment functions in XFEM? In paper titled "A finite element method for crack growth without remeshing" by Nicolas Moes et al.(1999), they use the following function for heaviside enrichment:

 H(x,y)={1, for y>0

             -1,for y<0}

 While, in paper titled "A review of extended/generalized finite element methods for material modeling" by Ted Belytschko et al.(2009), they use the following function for heaviside enrichment:


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