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Typical fluid-structure interaction model

Posted 12.04.2013, 00:51 GMT-4 2 Replies

Jay Kim
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Hi

I am new and struggling to start a simple model.

I have been playing with blood vessel model from the model library.

I would like to look at the vascular behavior when blood vessel is impacted by a piston.

It is going to be dynamic analysis and I want control the velocity of piston and depth of impact.

My question is that how I can make piston move with certain velocity and control the displacement of piston.

And also how can I solve the problem with dynamic analysis?

Any help will be appreciated.

Thanks
2 Replies Last Post 12.04.2013, 12:24 GMT-4
Ivar KJELBERG COMSOL Multiphysics(r) fan, retired, former "Senior Expert" at CSEM SA (CH)
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Posted: 1 decade ago 12.04.2013, 03:46 GMT-4
Hi

but arent velocity and displacement linked ?

for me s=s0+v0*t where s0 is the initial position and v0 the (assumed here constant) velocity

so try to define an imposed displacement as

s0[m]+v0[m/s]*t

with i.e s0 and v0 defined as parameters

--
Good luck
Ivar
Hi but arent velocity and displacement linked ? for me s=s0+v0*t where s0 is the initial position and v0 the (assumed here constant) velocity so try to define an imposed displacement as s0[m]+v0[m/s]*t with i.e s0 and v0 defined as parameters -- Good luck Ivar
Jay Kim
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Posted: 1 decade ago 12.04.2013, 12:24 GMT-4
Ivar

The piston moves 1mm of displacement with 7m/s of velocity.
Ivar The piston moves 1mm of displacement with 7m/s of velocity.

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