Item type |
デフォルトアイテムタイプ(フル)(1) |
公開日 |
2007-08-16 |
タイトル |
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タイトル |
新しいタイプの高剛性試験機による岩質材料の一軸圧縮変形試験について |
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言語 |
ja |
タイトル |
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タイトル |
On Uniaxial Compression Tests of Rock-like Materials Using a New Type of High Stiff Testing Machine |
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言語 |
en |
作成者 |
川本, 朓万
渡嘉敷, 直彦
Kawamoto, Toshikazu
Tokashiki, Naohiko
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アクセス権 |
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アクセス権 |
open access |
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アクセス権URI |
http://purl.org/coar/access_right/c_abf2 |
主題 |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
rock-like material |
主題 |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
a stiff testing machine |
主題 |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
uniaxial compression test |
主題 |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
cyclic loading |
主題 |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
complete stress-strain curve |
主題 |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
deformation |
主題 |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
fatigue life |
主題 |
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言語 |
en |
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主題Scheme |
Other |
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主題 |
a progressive failure model |
内容記述 |
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内容記述タイプ |
Other |
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内容記述 |
In planning of underground structures stability analysis of rock masses requires precise properties of fractured rocks.\nIn this paper, an experimental study of rock-like materials by uniaxial compression tests is presented using a new type of high stiff loading machine. Four kinds of rocks were selected, namely, Oya-stone (green tuff), Kobe-tuff, cement mortar and marble stone. Three differrent loading procedures were employed, i.e., static loading, incrementally cyclic loading and cyclic loading in post-failure region (see Fig. 4).\nThe machine used in these experiments has high stiffness about 312 ton/mm, and is capable of controlling either deformation or load of the specimen by mechanical action of the wedges under steel blocks installed in parallel with a specimen. This loading machine is very practical and efficient to obtain complete stress-strain curve of geologic materials.\nMain results are summarized as follows:\n(1) Obtained stress-strain curves are resolved into four characteristic regions due to the progress of fracturing, namely, intact, crack, fracture, and flow regions. The strains corresponding to each region are related to the strength, or the fablic of materials.\n(2) Tests of incrementally cyclic loading show that the envelop of unloading and reloading curve is coincident with the statical loading curve.\n(3) Relationship between plastic strain and total strain on incrementally cyclic loading are distributed by Weibull's probability.\n(4) Fatigue life under cyclic loading in post-failure region are influenced significantly by crypto-damage due to initial loading and applied stress level. |
内容記述 |
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内容記述タイプ |
Other |
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内容記述 |
紀要論文 |
出版者 |
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言語 |
ja |
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出版者 |
琉球大学工学部 |
言語 |
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言語 |
jpn |
資源タイプ |
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資源タイプ |
departmental bulletin paper |
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資源タイプ識別子 |
http://purl.org/coar/resource_type/c_6501 |
出版タイプ |
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出版タイプ |
VoR |
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出版タイプResource |
http://purl.org/coar/version/c_970fb48d4fbd8a85 |
識別子 |
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識別子 |
http://hdl.handle.net/20.500.12000/1392 |
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識別子タイプ |
HDL |
収録物識別子 |
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収録物識別子タイプ |
ISSN |
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収録物識別子 |
0389-102X |
収録物識別子 |
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収録物識別子タイプ |
NCID |
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収録物識別子 |
AN0025048X |
収録物名 |
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言語 |
ja |
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収録物名 |
琉球大学工学部紀要 |
書誌情報 |
号 21,
p. 41-52,
発行日 1981-03
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