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Verifiication Check of Invariance with respect to Rigid-Body Motion (Objectivity) v001
Description Check whether a model is invariant with respect to rigid-body motion (translation and rotation) as required by objectivity (material frame-indifference). This is expected to be true for any model that does not depend on an external field. The check is performed for a randomly distorted non-periodic body-centered cubic (BCC) cube base structure. Separate configurations are tested for each species supported by the model, as well as one containing a random distribution of all species. The energy and forces of each configuration is compared with that of the same configuration rotated about a random axis by an irrational angle and translated in a random direction by an irrational distance. The verification check will pass if the energy of all configurations that the model is able to compute are invariant and the forces are mapped back by the inverse rotation. Configurations used for testing are provided as auxiliary files.
Contributor tadmor
Maintainer tadmor
Author Ellad Tadmor
Publication Year 2018
Item Citation Click here to download a citation in BibTeX format.
Short KIM ID
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Extended KIM ID
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DOI 10.25950/5be3d624
KIM Item TypeVerification Check
Properties as defined in kimspec.edn.
Simulator Name
The name of the simulator as defined in kimspec.edn.
Programming Language(s)
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100.00% Python
Previous Version Objectivity__VC_813478999433_000


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