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force displacement curve

Asked by Hasan

Hello All,

I was trying to obtain force displacement curve between two particles in contact but I wasn't sure how to do this.

I have some scenarios here.

What if I fixed one particle can I applied external force to the other particle?

or if I fixed one particle and gave the other particle the command to move towards the other particle either by :
 moving with constant velocity,
or to move directly to specific overlap location?

Would any of these method give me correct force displacement results?

Many thanks,

Hasan

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Anton Gladky (gladky-anton) said : 		#1

2014-08-14 20:02 GMT+02:00 Hasan <email address hidden>:
> or if I fixed one particle and gave the other particle the command to move towards the other particle either by :
> moving with constant velocity,

I prefer this one. But it depends on the paper/description of contact
model, which you want to use to calibrate your model.

Anton.

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Hasan (hassanmsahli) said : 		#2

Hi Anton,

Thank you for your reply. This will give me a good starting point.

I am trying to calibrate either MindlinCapilla or Cundallstrack, if I could do both that would be better of cource.

I started doing some two particles interaction tests (MindlinCapilla contact model) I noticed that under inspect -> interactions there are two terms penetrantionDepth and normalforce.

Do the values represented in front of these terms correspond to the real force and displacement values? or do I need to calibrate these valuse as well if I want to use them?

Many Thanks

Hasan

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Jan Stránský (honzik) said : 		#3

Hi Hasan,

>
> I started doing some two particles interaction tests (MindlinCapilla
> contact model) I noticed that under inspect -> interactions there are
> two terms penetrantionDepth and normalforce.
>
> Do the values represented in front of these terms correspond to the real
> force and displacement values? or do I need to calibrate these valuse
> as well if I want to use them?
>

the penetrationDepth and normalForce are real values

cheers
Jan

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