ESyS-Particle

Viscoelastic model for rotational bonds

Asked by Shakhawath Hossain

Hello Everyone,

Is there any viscoelastic model implemented in ESyS-particle for rotational bonded interaction? If not, then how difficult it will be to implement such model? I can understand the implementation of viscoelastic model for NRotBonded interaction will be easier.

However, it will be really helpful if anyone can suggest me about the implementation of viscoelastic model for rotational bonded interaction group.

Thanks.

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Qi Shao (uqqshao) said : 		#1

Hi Shakhawath,

Thank you for your questions. As far as I understand, currently there is no viscoelastic model directly implemented in ESyS-particle for rotational bonded interaction. Instead, an elastic-brittle beam model is implemented for rotational bonded interactions to compute the normal, shear, bending and torsion forces (please refer to Section 3.2.1 of the Tutorial for more information). The bond can be broken when a breaking strength is reached. After a bond breaks, particles switch to interacting with their unbonded neighbours via the elastic/frictional contact, where viscous damping is implemented via LinDamping and RotDamping.

If you wish to add a new type of interaction to ESyS-Particle, the following guidance would be helpful: https://bugs.geocomp.uq.edu.au/attachments/download/21/HowToAddInteraction.pdf . You may need to register first to get access to this document.

Please let me know if you have further questions.
Thank you.

Cheers,
Qi

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