Question #159705 on Yade changed:
https://answers.launchpad.net/yade/+question/159705
Status: Open => Answered
Anton Gladky proposed the following answer:
Do you need to change a density during simulation?
Anton
On Tue, May 31, 2011 at 9:21 AM, Lin Zhang
<[email protected]> wrote:
> New question #159705 on Yade:
> https://answers.launchpad.net/yade/+question/159705
>
> hi,
> I found it kind of unreasonable about the mass calculation of body(sphere and
> box). I don't know whether it have been posted. If yes, plz ignore this.
> I am trying to increase the timestep by assigning a large density to
> particles, so-called density-scale. However, I found the mass of body won't
> update when a new density assigned. Maybe it is a bug, at least unreasonable.
>
> As far as I found, the mass of body is calculated only in Shop.cpp, saying
> only available in the initialize of body. So the calculated mass is right
> only if the body is declared with given materials. Otherwise, it will be
> calculated according to the default value(1000. in my current version) and
> won't update even if you change the density.
>
> regards,
> Lin ZHANG
>
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