Dear Members
I'm working on an industrial problem, the objective is to remove
dust/soil from inside the tube. Its a vertical tube
made of steel and clamped on the top, free at the
bottom. Tube is excited by applying a force on it. The
tube will vibrate and bond between soil/dust particles
will break and they'll fall under gravity. Since the
tube is thin, many modes will be excited (bending
modes + shell modes + axial modes). Intuitive feeling
says shell modes will be most effective in removal of
dust/soil.
The problem is how to model the adhesion between the
dust and surface of the tube. The simplest one can
think of is to include somekind of cohesion and
friction angle, but seems abstract, as this is an
unusual problem.
I need some ideas, to model this normal or shear force
between the dust/soil particles and surface of the
tube. I'd be grateful, if someone could give the
solution of this problem, or can point out the related
journals, which would be of use.
Thanks a lot,
with regards,
Meysam
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