Perhaps some of those on this site have seen the news article on the BBC website yesterday about cracks appearing in the reactor at the Hunterston B nuclear power station. As the article states, cracking in the graphite bricks is predicted and the regulators are happy that the reactor is safe to operate.
I have already obtained the contact pressure (CPRESS) in the ABAQUS model.
NOW, I want to introduce a subroutine in ABAQUS which enables setting the contact pressure as input information, since contact pressue is the intial condition for another model which will incorporate with the existing model. I wonder if anyone can provide some suggestions on which subroutine can read the CPRESS (CSTRESS) as input information.
Many thanks!
Cephalopod-inspired Design of Electro-mechano-chemically Responsive Elastomers for On-demand Fluorescent Patterning
Qiming Wang, Gregory R. Gossweiler, Stephen L. Craig*, Xuanhe Zhao*
DEAR all
I want to knowthe following:
A circular diaphragm of 1mm diameter, is vibrating with the amplitude of 100 microns at frequency 1000 Hz. What is the sound output at 10 mm distance??
Recent experiments reveal that a scanning tunneling microscopy (STM) probe tip can generate a highly localized strain field in a graphene drumhead, which in turn leads to pseudomagnetic fields in the graphene that can spatially confine graphene charge carriers in a way similar to a lithographically defined quantum dot (QD). While these experimental findings are intriguing, their further implementation in nanoelectronic devices hinges upon the knowledge of key underpinning parameters, which still remain elusive.
Silicon is a promising anode material for lithium-ion batteries due to its enormous theoretical energy density. Fracture during electrochemical cycling has limited the practical viability of silicon electrodes, but recent studies indicate that fracture can be prevented by taking advantage of lithiation-induced plasticity. In this paper, we provide experimental insight into the nature of plasticity in amorphous LixSi thin films. To do so, we vary the rate of lithiation of amorphous silicon thin films and simultaneously measure stresses.
A short overview of micromechanical models of hierarchical materials (hybrid composites, biomaterials, fractal materials, etc.) is given. Several examples of the modeling of strength and damage in hierarchical materials are summarized, among them, 3D FE model of hybrid composites with nanoengineered matrix, fiber bundle model of UD composites with hierarchically clustered fibers and 3D multilevel model of wood considered as a gradient, cellular material with layered composite cell walls.
Does anybody know the underlying algorithm for the contact pressure in ABAQUS. Is the contact pressure calculated from the stresses?
Many thanks in advance!
Hi All,
Can a torque induce longitudinal motion of an elastic rod?
See the explanation and an example of use of the 'torsional gun' at http://www.ing.unitn.it/~bigoni/torsional_locomotion.html
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