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Why is glass brittle?

Submitted by amohajerani on

What makes glass brittle? I am posting this because I don't have a good answer for it, although I can think of three reasons:

 

-
The disordered structure of glass.  The problem with this explanation
is that silica is brittle in both ordered (quartz) and disordered (fused
silica) forms.

 

-
The covalent type of atomic bonds. The problem with this explanation is
that metallic glasses do not have covalent bonds, but are brittle.

 

Deformation rates and localization of an active fault system

Submitted by saberelarem on

The Corinth Rift in Greece is one of the most active extensional regions in the Mediterranean area (Fig. 1). The Corinth Rift Laboratory project (CRL, http://crlab.eu) is based on the cooperation of various european institutions that merge their efforts to study fault mechanics and related hazards in this natural laboratory where numerous continuous observations are made. The present rift is asymmetric and deformation is very localized.

ENF Model in Abaqus

Submitted by jayhars on

Hi Everyone,

                 I am new to abaqus and I am modeling an ENF specimen in abaqus..I am trying to find some tutorials relating to ENF specimen model in internet but i couldn't find one till now..If any one having the experience of modeling ENF specimen in abaqus kindly help me by providing some of the materials regarding this.

Research Associate in Clean Steel Processing

Submitted by rongshan on

Research Associate in Clean Steel Processing

Imperial College London - Department of Materials

Salary:  £31,300 per annum

Fixed term appointment for 36 months

The Department of Materials at Imperial College London wishes to appoint a Research Associate to explore the electropulsing-assisted clean steel processing science and technology. The project is funded by EPSRC for 36 months, and is associated with TATA Steel UK Technology Centres 

2012 SIMULIA Community Conference - May 15-17, 2012 - Providence RI, USA

Submitted by matt.ladzinski on

Ph.D. Studentships on Direct and Large-Eddy Simulation of Turbulent Heat and Fluid Flows (September 2013)

Submitted by bc_wang@umanitoba.ca on

Ph.D. studentships are available in the Department of Mechanical & Manufacturing
Engineering at the University of Manitoba, Canada. The research projects involve the
development of numerical modelling and parallel computer codes for studying
turbulent heat, mass and fluid flows within an environment with
complex geometries.



Successful candidates should have experience and/or interest in the following areas:
turbulence theory, LES, RANS, DNS, numerical algorithms, FORTRAN 90/95 and C

Opening: Research Professor Position at KAIST, Daejeon, Korea

Submitted by Jung W. Hong on

There is an opening for a research professor position in Advanced Engineering Mechanics Lab at KAIST, Daejeon, South Korea. Research topics include multiscale and multiphysics simulations and DIC experiments at high speeds. Applicants need to send a copy of Curriculum Vitae and a reference list to Prof. J.W. Hong (j.hong [at] kaist.ac.kr).

Post Doc

Submitted by ercan1011 on

I want to study post doc, my beckground is;  

concluded my doctoral thesis, in 2010, on “Design Of A Composite Tube Under
High Temprature And Dynamic Pressure Loading” at Kırıkkale University, Turkey.
Previously, I gratuaded from Istanbul Technical University and Gazi University
with honoured degree. I also studied on fracture mechanics, fatique
characteristics of mechanics and compututional mechanics with finite element
methods.