. "Novotn\u00E1, Eva" . . "S\u00FDkora, Jan" . . . "Prediction of the Effective Fracture Energy in Quarry Masonry" . . . . "neuvedeno" . "RIV/68407700:21110/06:01122784!RIV07-GA0-21110___" . . "RIV/68407700:21110/06:01122784" . . "21110" . "Prediction of the Effective Fracture Energy in Quarry Masonry"@en . . . "[6737351A48D0]" . . . "\u0160ejnoha, Ji\u0159\u00ED" . "P(GA103/04/1321), Z(MSM6840770001)" . . "493971" . "Stanoven\u00ED efektivn\u00ED lomov\u00E9 energie zdiva s nepravidelnou strukturou"@cs . "5"^^ . "Prediction of the Effective Fracture Energy in Quarry Masonry"@en . "1-905088-07-8" . "This paper offers two specific ways of the determination of macroscopic or homogenized fracture energy of quarry masonry. The first approach complies with the RILEM recommendations and draws on the series of numerical representations of macroscopic wedge splitting test assuming specimens of variable ligament lengths. While the estimated fracture energies vary with the depth of the wedge their plot gives in the limit for the wedge depth approaching zero the size independent effective fracture energy. Less cumbersome approach also offering savings on the computational part draws on the assumption of periodic character of masonry structure. A single numerical experiment carried out on a suitable periodic unit cell readily provides the desired fracture energy as the area under macroscopic stress-strain curve multiplied by the area of the unit cell and divided by the total crack length (the extent of traction free surfaces)."@en . "Stirling" . "5"^^ . . "Fracture energy; Homogenization; Periodic unit cell; Quarry masonry; Wedge splitting test"@en . . "This paper offers two specific ways of the determination of macroscopic or homogenized fracture energy of quarry masonry. The first approach complies with the RILEM recommendations and draws on the series of numerical representations of macroscopic wedge splitting test assuming specimens of variable ligament lengths. While the estimated fracture energies vary with the depth of the wedge their plot gives in the limit for the wedge depth approaching zero the size independent effective fracture energy. Less cumbersome approach also offering savings on the computational part draws on the assumption of periodic character of masonry structure. A single numerical experiment carried out on a suitable periodic unit cell readily provides the desired fracture energy as the area under macroscopic stress-strain curve multiplied by the area of the unit cell and divided by the total crack length (the extent of traction free surfaces)." . . . "Stanoven\u00ED efektivn\u00ED lomov\u00E9 energie zdiva s nepravidelnou strukturou"@cs . "Tento p\u0159\u00EDsp\u011Bvek popisuje dva specifick\u00E9 zp\u016Fsoby ur\u010Dov\u00E1n\u00ED makroskopick\u00E9 nebo homogenizovan\u00E9 lomov\u00E9 energie nepravideln\u00E9ho zdiva. Prvn\u00ED p\u0159\u00EDstup vych\u00E1z\u00ED z doporu\u010Den\u00ED RILEM a je proveden na s\u00E9rii numerick\u00FDch „wegde split“ test\u016F, kter\u00E9 p\u0159edpokl\u00E1daj\u00ED r\u016Fznou d\u00E9lku ligamentu zku\u0161ebn\u00EDch vzork\u016F. Vypo\u010Dten\u00E1 lomov\u00E1 energie se li\u0161\u00ED podle hloubky z\u00E1\u0159ezu, limitn\u00EDm \u0159e\u0161en\u00ED odpov\u00EDdaj\u00EDc\u00ED nulov\u00E9 hloubce z\u00E1\u0159ezu je rozm\u011Brov\u011B nez\u00E1visl\u00E1 lomov\u00E1 energie. Druh\u00FD zp\u016Fsob vych\u00E1z\u00ED z periodick\u00E9ho charakteru zdiva. Numerick\u00FD experiment proveden\u00FD na vhodn\u00E9 periodick\u00E9 bu\u0148ce poskytuje \u017E\u00E1danou lomovou energii vypo\u010Dtenou jako plochu pod pracovn\u00EDm diagramem n\u00E1sobenou plochou periodick\u00E9 bu\u0148ky a d\u011Blenou celkovou d\u00E9lkou trhliny. Druh\u00FD p\u0159\u00EDstup se jev\u00ED jako vhodn\u011Bj\u0161\u00ED z hlediska v\u00FDpo\u010Detn\u00EDho, tak i z hlediska vyhodnocov\u00E1n\u00ED v\u00FDsledk\u016F."@cs . "Vorel, Jan" . . . "\u0160ejnoha, Michal" . . . . "Prediction of the Effective Fracture Energy in Quarry Masonry" . .