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Deformational Response of Rocks to Uniaxial, Biaxial, and Triaxial Loading or Unloading Regimes
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SYSNO ASEP 0475825 Druh ASEP C - Konferenční příspěvek (mezinárodní konf.) Zařazení RIV D - Článek ve sborníku Název Deformational Response of Rocks to Uniaxial, Biaxial, and Triaxial Loading or Unloading Regimes Tvůrce(i) Janeček, Ivan (UGN-S) RID
Mishra, A. Deepak (UGN-S)Celkový počet autorů 2 Zdroj.dok. Procedia Engineering - ISRM European Rock Mechanics Symposium EUROCK 2017. - Amsterdam : Elsevier Ltd., 2017 / Koníček P. ; Souček K. ; Konečný P. - ISSN 1877-7058 Rozsah stran s. 332-341 Poč.str. 10 s. Forma vydání Online - E Akce ISRM European Rock Mechanics Symposium EUROCK 2017 Datum konání 20.06.2017 - 23.06.2017 Místo konání Ostrava Země CZ - Česká republika Typ akce WRD Jazyk dok. eng - angličtina Země vyd. NL - Nizozemsko Klíč. slova triaxial testing ; equi-biaxialloading ; compressibility ; uniaxial loading ; isotropic compression ; Hooke's law Vědní obor RIV BM - Fyzika pevných látek a magnetismus Obor OECD Materials engineering CEP LO1406 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy ED2.1.00/03.0082 GA MŠMT - Ministerstvo školství, mládeže a tělovýchovy Institucionální podpora UGN-S - RVO:68145535 UT WOS 000416996000043 DOI 10.1016/j.proeng.2017.05.189 Anotace In material sciences, it is a well-known fact that linear or linearized theory based on Hooke's law does not offer a satisfactory description of solids in special regimes, which include e.g. too high strains under large uniaxial stresses. Therefore, in general, the response to biaxial or triaxial loading cannot be obtained as superposition of uniaxial load responses. Striking paper book example of material demonstrating such behavior is rubber subjected to uniaxial or isotropic compression. Despite this fact, linear mechanical moduli, being secant or differential, determined through standard rock-mechanics tests, mostly from the uniaxial compression, are still widely used for description of deformational behavior of rocks. Without doubt, an appropriate interpretation of these effective quasi-elastic or stiffness moduli can give useful information about mechanical properties of the rocks, especially in comparative sense. However, for more reliable constitutive modeling of any solid materials, paricularly rocks, an experimental investigation of deformational responses to uniaxial, biaxial and triaxial loading or unloading regimes is very useful. This contribution presents the results of an experimental case study on homogeneous sandstone exposed to isotropic triaxial, and equi-biaxial or uniaxial loading regimes. The measured deformational response of this rock is compared with behavior of elastic solid materials. Finally, benefit of the experimental testing for constitutive modeling based on phenomenological description is briefly discussed. Pracoviště Ústav geoniky Kontakt Lucie Gurková, lucie.gurkova@ugn.cas.cz, Tel.: 596 979 354 Rok sběru 2018 Elektronická adresa http://www.sciencedirect.com/science/article/pii/S1877705817323299
Počet záznamů: 1