Essential role of non-essential multifield approximations in lattice dynamics
| العنوان: | Essential role of non-essential multifield approximations in lattice dynamics |
|---|---|
| المؤلفون: | Miguel Charlotte, Lev Truskinovsky |
| المساهمون: | Charlotte, Miguel |
| المصدر: | HAL |
| مصطلحات موضوعية: | [PHYS.MECA.SOLID] Physics [physics]/Mechanics [physics]/Solid mechanics [physics.class-ph], anticontinuum phenomena, non-essential multilattice, long wavelength approximation, multifield continuum elastodynamics, non-trivial inertia |
| الوصف: | Relevant scales of length and time in lattice dynamics depend on both, the structure of atomic interactions and the nature of the observed phenomenon. In this work we are interested in building such a mesoscale description of dynamics in a mass-spring system which will be capable of capturing atomically fast and localized phenomena that cannot be handled correctly by the classical quasi-continuum theories relying on a single displacement field. Our approach is based on a nonessential multilattice description of a chain with nearest neighbor interactions and its multi-field long wavelength approximations. The outcome is a non-classical multifield continuum elastodynamics with nontrivial inertia whose complexity depends on the level of frequencies intended to be captured. The advantage of the multi-field approach is that we can deal in the same framework with both continuum and anticontinuum phenomena. |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=dedup_wf_001::3cc6fae549c246efb45f987088df0ce0 https://hal.science/hal-02064380 |
| رقم الانضمام: | edsair.dedup.wf.001..3cc6fae549c246efb45f987088df0ce0 |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |