research
An XFEM/level-set method to model nanostructures
In the attached paper, we propose a procedure combining an XFEM/level-set technique and Gurtin-Murdoch surface elasticity to model nanostructures with arbitrary geometries. The effects of free surface which are dominant at small scales are easily captured in this framework.
Composite thermoforming-ABAQUS
I need to modeling an example of thermoforming of composite (woven PPS/ Carbone) on ABAQUS, which can help me (if possible to give me a tutorial)
thank you
Equivalent Mass and Stiffness Distribution
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Hello everyone,
Mechanism To Increase Energy Efficiency.
View the figure attached. It is about using Cam for increase
energy efficiency. Cam are generally used to open and close valve of IC
Engine. I am going to show you another use. Left side initial position.
Right side final position. Redius of cam continuously decrease.Sliding
weight (MG) applied on Cam. With the help of rope weight(MG*Cos(b)) is
fixed with cam. We consider b as 45. So cos 45=.70. This fixed weight
should be 0.70 MG. Which balance the sliding weight applied on cam in
tengential direction. As sliding weight come down the fixed weight go
up. But the twist is the redius of cam decrease nominal continuously.
So sliding weight come down little bit and fixed weight go up much
more. We consider sliding weight come dowm H2 height and fixed weight
"Time variation of a fundamental dimensionless constant"
http://arxiv.org/PS_cache/arxiv/pdf/0903/0903.5321v1.pdf
The above article is an April Fool's joke. It reminded me of the recent "discoveries" in the mechanics community regarding stress tensor.
Regards,
Arash