ESyS-Particle

dynamic change of time steping in EsysParticle

Asked by Debski

Dear All

Recently I am carrying an exhaustive testing of numerical (time integration) stability of EsysParticle code with uniaxial compression tests. The most interesting situations appears when simulation is stable at initial ``elastic'' part of simulations and lose it when approaching the moment of sample breaking. For analysis of such cases it would be convenient to use two (at least) different time steps: a large for the initial ``elastic'' non-interesting period to go through it quickly and much smaller when approaching the breaking moment. Is it possible to do it with a standard python API for Esys?

Best regards
Wojciech

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SteffenAbe
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Best SteffenAbe (s-abe) said : 		#1

Hi Wojciech,

you can call lsm.setTimeStepSize() from the python script at any time during the simulation to change the time step size manually. There is no automatic "adaptive timestepping" method implemented.

Steffen

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Debski (debski) said : 		#2

 Steffen
Thanks a lot
Wojciech

SteffenAbe <email address hidden> wrote:

> Your question #687091 on ESyS-Particle changed:
> https://answers.launchpad.net/esys-particle/+question/687091
>
> Status: Open => Answered
>
> SteffenAbe proposed the following answer:
> Hi Wojciech,
>
> you can call lsm.setTimeStepSize() from the python script at any time
> during the simulation to change the time step size manually. There is
> no automatic "adaptive timestepping" method implemented.
>
> Steffen
>
> --
> If this answers your question, please go to the following page to let us
> know that it is solved:
> https://answers.launchpad.net/esys-particle/+question/687091/+confirm?answer_id=0
>
> If you still need help, you can reply to this email or go to the
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> You received this question notification because you asked the question.

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Debski (debski) said : 		#3

Thanks SteffenAbe, that solved my question.