000012464 001__ 12464
000012464 005__ 20160816141447.0
000012464 04107 $$aeng
000012464 046__ $$k2016-05-09
000012464 100__ $$aMikeš, K.
000012464 24500 $$aCOMPARISON OF QUASICONTINUUM APPROACHES USING VARIOUS LEVELS OF SIMPLIFICATION

000012464 24630 $$n22.$$pEngineering Mechanics 2016
000012464 260__ $$bInstitute of Thermomechanics AS CR, v.v.i., Praha
000012464 506__ $$arestricted
000012464 520__ $$2eng$$aAtomistically based simulations of materials with disordered microstructure often lead to a high number of degrees of freedom (DOFs) and extreme computational costs. The quasicontinuum method (QC) is a multiscale simulation technique which combines fast continuum and exact atomistic approaches. The key idea of QC is to reduce the computational cost by reducing degrees of freedom of the fully atomistic approach. In the present work, the QC idea is applied to particle systems with elastic-brittle links representing a specific material microstructure. Three approaches using various levels of simplification based on the idea of QC are described and implemented. Accuracy and specific properties of QC-inspired approaches are evaluated by comparing the results with the fully resolved particle model.

000012464 540__ $$aText je chráněný podle autorského zákona č. 121/2000 Sb.
000012464 653__ $$aQuasicontinuum method, finite elements, discrete particle model, elasto-brittle material.

000012464 7112_ $$aEngineering Mechanics 2016$$cSvratka, CZ$$d2016-05-09 / 2016-05-12$$gEM2016
000012464 720__ $$aMikeš, K.$$iJirásek, M.
000012464 8560_ $$ffischerc@itam.cas.cz
000012464 8564_ $$s245846$$uhttps://invenio.itam.cas.cz/record/12464/files/094bo_o_sol.pdf$$yOriginal version of the author's contribution as presented on CD, id 094, section SOL.
000012464 962__ $$r12369
000012464 980__ $$aPAPER