Young scientist Suganth Kannan presents his mathematical model at the International Conference on Engineering Failure Analysis in The Hague, July 2012.
To read more, go to http://elsevierconnect.com/12035/
Nanoscale fracture of graphene under coupled in-plane opening and shear
mechanical loading is investigated by extensive molecular dynamics
simulations. Under opening-dominant loading, zigzag edge cracks grow
self-similarly. Otherwise, complex stresses concentrated around
crack-tip can manipulate the direction of crack initiation changing by
30° (or multiples of 30°). Toughness determined by obtained critical
stress intensity factors 2.63–3.38 nN Å−3/2
demonstrates that graphene is intrinsically brittle opposite to its
exceptional high strength at room temperature. Torn zigzag edges are
more energetically and kinetically favorable. Cracking of graphene has
The dielectric constant is an essential electrical parameter to the
achievable voltage-induced deformation of the dielectric
elastomer. This paper primarily focuses on the temperature
dependence of the dielectric constant (within the range of 173 K
to 373 K) for the most widely used acrylic dielectric
elastomer (VHB 4910). First the dielectric constant was investigated
experimentally with the broadband dielectric spectrometer
(BDS). Results showed that the dielectric constant first increased
with temperature up to a peak value and then dropped to a
relative small value. Then by analyzing the fitted curves, the Cole–Cole
dispersion equation was found better to characterize the
rising process before the peak values than the Debye dispersion
Hello All,
I have some questions concerning the VUMAT subroutine, I run successfully an
analysis on one element with one integration point,
so my first question is how to code for several integration points (
nblock concerns only the material points not the integration points)?
My second question is how to write for datas dependent of temperature (like Young and shear modulus)??
Thank you all for your answers.
Manal
I have been asked questions about how the shear modification was introduced to the Gurson model. I was also asked to compare my modification (see Xue L., Constitutive modeling of void shearing effect in ductile fracture of porous materials, Engineering Fracture Mechanics, 2008, 75(11):3343-3366) to John Hutchinson's modification (Nahshon, K., Hutchinson, J.W., Modification of the Gurson model for shear failure. European Journal of Mechanics A/Solids, 2008, 27:1-17).
HI,
Am trying to model prestressed box girder bridge for high speed railway analysis.Am not getting how to model prestressing force using ABAQUS/CAE.I have seen that it's not possible with CAE. Please say me an alternative way to model prestressing force.
how to plot load vs deflection graph and in multi step loading in ANSYS?
Now I am doing some work about nanotwinned copper, and don't understand what's the nature of "detwinning".
Could any disappearance of the original nanotwin structure and the formation of a single grain or a new twin structure with TBs in a different orientation and/or with different TB spacing be called detwinning?
The mechanical behavior of mono- and multi- layered graphene and carbon nanotube (CNT) systems has attracted great attention over the last decade because of their importance in nano-science and nanotechnology.
