. . "Elaboration of method for determination of shape and size of blank for drawing of intricate shape stampings from sheet-metal"@en . "2008-05-19+02:00"^^ . "39"^^ . . "GA101/00/0488" . "39"^^ . . . . "Rozpracov\u00E1n\u00ED metodiky stanoven\u00ED optim\u00E1ln\u00EDho tvaru a velikosti p\u0159\u00EDst\u0159ihu pro ta\u017Een\u00ED v\u00FDta\u017Ek\u016F nepravideln\u00FDch tvar\u016F z tenk\u00FDch plech\u016F s vyu\u017Eit\u00EDm trajektorii maxim\u00E1ln\u00EDch smykov\u00FDch nap\u011Bt\u00ED, vy\u0159e\u0161en\u00ED rychl\u00E9ho a p\u0159esn\u00E9ho m\u00E1ln\u00EDch smykov\u00FDch nap\u011Bt\u00ED a charakteristik vhodografu rychlost\u00ED, kter\u00E9 maj\u00ED tvar logaritmick\u00FDch spir\u00E1l. Vyhodnocen\u00ED tva\u0159itelnosti plechu, kter\u00FD se pou\u017E\u00EDv\u00E1 pro ta\u017Een\u00ED vybran\u00E9ho v\u00FDta\u017Eku nepravideln\u00E9ho tvaru s vyu\u017Eit\u00EDm zkou\u0161ek z\u00E1kladn\u00EDch, napodobuj\u00EDc\u00EDch, podle nov\u00FDch krit\u00E9rii hodnocen\u00ED tva\u0159itelnosti podle diagram\u016F mezn\u00EDch deformac\u00ED. Pro vybran\u00FD v\u00FDta\u017Eek nepravideln\u00E9ho tvaru sestrojen\u00ED tvaru p\u0159\u00EDst\u0159ihu metodou, vyu\u017E\u00EDvaj\u00EDc\u00ED \u010CSN, metodou \u0159ez\u016F a metodou, vyu\u017E\u00EDvaj\u00EDc\u00ED trajektorii maxim\u00E1ln\u00EDch smykov\u00FDch nap\u011Bt\u00ED a proveden\u00ED jejich vz\u00E1jemn\u00E9ho porovn\u00E1n\u00ED. Stanovennap\u011B\u0165ov\u00FDch pom\u011Br\u016F v p\u0159\u00EDrub\u011B v\u00FDta\u017Eku pomoc\u00ED trajektori\u00ED maxim\u00E1ln\u00EDch smykov\u00FDch nap\u011Bt\u00ED a kinematick\u00FDch pom\u011Br\u016F s vyu\u017Eit\u00EDm hodografu rychlost\u00ED bod\u016F p\u0159\u00EDruby p\u0159i ta\u017Een\u00ED. Porovn\u00E1n\u00ED \u010Dty\u0159 alternativ tvaru p\u0159\u00EDst\u0159ihu na z\u00E1klad\u011B rozlo\u017Een\u00ED nap\u011Bt\u00ED a deformac\u00ED p\u0159i" . . . . "V\u00FDsledkem \u0159e\u0161en\u00ED projektu je zpracov\u00E1n\u00ED metodiky optimalizace tvaru a velikosti p\u0159\u00EDst\u0159ihu pro ta\u017Een\u00ED v\u00FDta\u017Ek\u016F nepravideln\u00FDch tvar\u016F. P\u0159i \u0159e\u0161en\u00ED byl vyu\u017Eit syst\u00E9m trajektori\u00ED maxim\u00E1ln\u00EDch smykov\u00FDch nap\u011Bt\u00ED a deforma\u010Dn\u00EDch rychlost\u00ED. V\u00FDsledky experiment\u016F byly"@cs . . "0"^^ . . . "Rozpracov\u00E1n\u00ED metodiky stanoven\u00ED tvaru a velikosti p\u0159\u00EDst\u0159ihu pro ta\u017Een\u00ED dut\u00FDch v\u00FDta\u017Ek\u016F nepravideln\u00FDch tvar\u016F z tenk\u00FDch plech\u016F" . "0"^^ . . "http://www.isvav.cz/projectDetail.do?rowId=GA101/00/0488"^^ . "1"^^ . "Neuvedeno."@en . . "Elaboration of method for determination of shape and size of blank for drawing of intricate shape stampings from sheet-metal with the use of maximum shear stress trajectories. Solving of quick and accurate method for drawing of maximum shear stress trajectories and characteristics in velocities hodograph, which have the shape of logarithmic spirals. Evaluation of the formability of sheet-metal, which is used for drawing of chosen intricate shape stamping, with the use of basic tests, simulation tests, according to the new criteria for evaluation of sheet-metal formability and according to forming limit diagrams. Construction of the blank shape for chosen intricate shape stamping by method, using the Czech State Standards, by method of sections and by method, using the maximum shear stress trajectories and making their reciprocal comparison. Guessing the stress conditions in the flange of stamping with the use of maximum shear stress trajectories and kinematic conditions with the use of"@en . . .