"Tunnel face stability transformation field analysis and distinct state concept"@en . "Neuvedeno."@en . . . . . . . . "Coupled modeling concists in connection of results from mathematical and experimental models. The mathematical models start with generalized Transformation Field Analysis, established by (Dvorak and Prochazka, 1996). This theory consideres linear states"@en . . . . "0"^^ . "GA103/03/0483" . . . . "http://www.isvav.cz/projectDetail.do?rowId=GA103/03/0483"^^ . "Vlastn\u00ED nap\u011Bt\u00ED a vlastn\u00ED deformace hraj\u00ED velmi d\u016Fle\u017Eitou roli v mnoha oblastech aplikovan\u00E9 mechaniky. Vlastn\u00ED parametry mohou representovat plastick\u00E9 deformace, nebo relaxa\u010Dn\u00ED nap\u011Bt\u00ED (nebo tak\u00E9 p\u0159edp\u011Bt\u00ED, zm\u011Bnu teploty, atd.), a mohou slou\u017Eit jako voln\u00E9n\u00E1vrhov\u00E9 parametry pro zp\u0159esn\u011Bn\u00ED vlastnost\u00ED numerick\u00FDch model\u016F v tom smyslu, \u017Ee vypo\u010D\u00EDtan\u00E9 hodnoty jsou co mo\u017En\u00E1 nejbl\u00ED\u017Ee skute\u010Dn\u00FDch hodnot\u00E1m veli\u010Din z re\u00E1ln\u00E9ho stavu. Abychom dostali rozumnou shodu mezi t\u011Bmito veli\u010Dinami p\u0159i porovn\u00E1v\u00E1n\u00ED m\u011B\u0159en\u00FDch avypo\u010D\u00EDtan\u00FDch hodnot, m\u016F\u017Eeme zformulovat speci\u00E1ln\u00ED varia\u010Dn\u00ED formulaci, kter\u00E1 vych\u00E1z\u00ED z minima variance rozd\u00EDl\u016F m\u011B\u0159en\u00FDch a vypo\u010D\u00EDtan\u00FDch hodnot. S vyu\u017Eit\u00EDm velmi u\u017Eite\u010Dn\u00E9ho postupu, metody transforma\u010Dn\u00EDho pole (TFA), kter\u00E1 byla navr\u017Eena Dvorakem &Proch\u00E1zkou, probl\u00E9m vede na syst\u00E9m line\u00E1rn\u00EDch rovnic. V p\u0159\u00EDpad\u011B navrhovan\u00E9ho grantu se soust\u0159ed\u00EDme na mnohem obecn\u011Bj\u0161\u00ED v\u00FDchoz\u00ED stav, na distinct state concept (DSC) navr\u017Een\u00FD prof. Desai a popisuj\u00EDc\u00ED neline\u00E1rn\u00ED chov\u00E1n\u00ED materi\u00E1lu horniny. Tento koncept ji\u017E" . "Eigenstresses and eigenstrains act out a very important role in many branches of applied mechanics. The eigenparameters may represent plastic strains or relaxation stresses (or also prestresses, change of temperature, etc.), and may serve as freeparameters for improving properties of numerical models to get the computed quantities that should be as close as possible to the real state. In order to get a reasonable agreement between these quantities when comparing both computed and measuredvalues, a special variational formulation can be given, dealing with the minimum variance of differences between measured and computed values. Using a very useful treatment, transformation field analysis (TFA), having recently been proposed by Dvorak &Proch\u00E1zka, the problem leads to a linear system of algebraic equations. In the case of proposed grant project we start with distinct state concept (DSC) having been proposed by Desai and describing nonlinear material behavior of the rock. This concept do"@en . . . . "28"^^ . "1"^^ . "28"^^ . "3"^^ . . "\u0158e\u0161en\u00ED stability tunelov\u00E9 \u010Delby Anal\u00FDzou transforma\u010Dn\u00EDho pole a Konceptu odli\u0161n\u00FDch stav\u016F" . . "2009-01-15+01:00"^^ . "Sdru\u017Een\u00E9 modelov\u00E1n\u00ED je propojen\u00ED v\u00FDsledk\u016F z\u00A0matematick\u00FDch a experiment\u00E1ln\u00EDch model\u016F. Matematick\u00E9 modely vych\u00E1z\u00ED ze zobecn\u011Bn\u00E9 teorie Anal\u00FDzy transforma\u010Dn\u00EDho pole, poprv\u00E9 u\u017Eito na teorii kompozit\u016F v (Dvorak, Proch\u00E1zka, 1996). Tato teorie vych\u00E1zela z line\u00E1r"@cs . .