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Browsing by Subject "damage variable D"

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  • thumbnail.journal.alt
    Item type:Article, Access status: Open Access ,
    Zmienna uszkodzenia D dla skał poddanych próbom jednoosiowego rozciągania
    (Wydawnictwa AGH, 2008) Tomiczek, Krzysztof
    On basis of Lemaitre and Ju and Xie theories a new damage variables D are proposed to measure the damage and evolution of failure of rocks under uniaxial tension. The damage D was determined by load and unload stress - strain characteristics of cylindrical sandstones and granite samples under direct tension condition. Generally, the damage D of rocks under tension was lower than critical value (D< 1), when the load amplitude reached ultimate strength. The results illustrated also that the tangent modulus E, has determinative influence of D.