"Pl\u00E1nov\u00E1na je spolupr\u00E1ce dvou instituc\u00ED p\u0159i v\u00FDzkumu velk\u00FDch elasto-plastick\u00FDch deformac\u00ED materi\u00E1lu. Geometrie deformace by mohla b\u00FDt pops\u00E1na kombinac\u00ED dvou p\u0159\u00EDstup\u016F: logaritmick\u00E9 derivace XBM (Xiao-Bruhns-Meyers) a Rougeeho metriky. Takov\u00E1 teorie by v p\u0159\u00EDpad\u011B \u00FAsp\u011Bchu umo\u017Enila sjednotit tot\u00E1ln\u00ED a inkrement\u00E1ln\u00ED formulace, jin\u00FDmi slovy, byla by konsistent\u00ED sou\u010Dasn\u011B s rovnicemi hypoelastick\u00E9ho i multiplikativn\u00EDho typu. V tomto obecn\u00E9m r\u00E1mci lze navrhnout konkr\u00E9tn\u00ED materi\u00E1lov\u00E9 modely, vhodn\u00E9 pro tv\u00E1\u0159en\u00ED kov\u016F. Zahrnuty mohou b\u00FDt parametry zaznamen\u00E1vaj\u00EDc\u00ED po\u0161kozen\u00ED a navr\u017Eena vhodn\u00E1 kriteria kritick\u00E9ho poru\u0161en\u00ED. Materi\u00E1lov\u00E9 modely se pak daj\u00ED implementovat v kone\u010Dnoprvkov\u00E9m syst\u00E9mu PMD, vyv\u00EDjen\u00E9m v \u00DAstavu termomechaniky. K tomu \u00FA\u010Delu je vhodn\u00E9 vyu\u017E\u00EDt standardn\u00ED procedury numerick\u00E9 integrace (return mapping). \u010C\u00E1st v\u00FDstupu z projektu tvo\u0159\u00ED komparativn\u00ED studie a verifikace nejnov\u011Bj\u0161\u00ED verze elasto-plastick\u00E9ho modelu XBM. Pot\u0159ebn\u00E1 materi\u00E1lov\u00E1 data budou z\u00EDsk\u00E1na z dynamick\u00FDch r\u00E1zov\u00FDch zkou\u0161ek Taylorova"@cs . . "1"^^ . "Numerick\u00E9 modelov\u00E1n\u00ED velk\u00FDch elasto-plastick\u00FDch deformac\u00ED a aplikace v procesech tv\u00E1\u0159en\u00ED kov\u016F"@cs . . . "2006-01-01+01:00"^^ . . . . . "2008-12-31+01:00"^^ . . . . "Computational finite elasto-plasticity and its application in metal forming processes"@en . "1"^^ . "2508"^^ . . "plasticity; finite strains; finite element method; metal forming"@en . "35"^^ . "0"^^ . . "2508"^^ . "35"^^ . "Efforts are joined by two institutions to perform research in the field of finite elasto-plasticity. The logarithmic XBM (Xiao-Bruhns-Meyers) objective rate and Rougee's metric are employed to propose a general geometric framework. This theory, if successful, will reconcile total and incremental descriptions, being consistent both with the hypoelastic type relations and multiplicative plasticity. Specific material models for metal forming then may be proposed within this arrangement, including theintroduction of damage internal variables and suitable criteria of failure. The models will be implemented in the finite element code PMD available at the Institute of Thermomechanics, using the standard return mapping procedures of numerical integration. As a part of assessment and comparative studies, the latest XBM model should be validated. Material data feed is planned to be accomplished via contact-impact elastic-plastic experiments as in the Taylor test. Theoretical findings and"@en . .