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  1. 紀要論文
  2. 琉球大学農学部学術報告
  3. 48号
  1. 部局別インデックス
  2. 農学部

石灰質砂と鋼材の摩擦特性に及ぼす水分の影響

http://hdl.handle.net/20.500.12000/3648
http://hdl.handle.net/20.500.12000/3648
e6b4e400-83c9-444f-8fe6-bbb65be7848c
名前 / ファイル ライセンス アクション
KJ00000161922.pdf KJ00000161922.pdf
Item type デフォルトアイテムタイプ(フル)(1)
公開日 2008-02-14
タイトル
タイトル 石灰質砂と鋼材の摩擦特性に及ぼす水分の影響
言語 ja
作成者 瀬戸内, 秀規

× 瀬戸内, 秀規

ja 瀬戸内, 秀規

新城, 俊也

× 新城, 俊也

ja 新城, 俊也

Setouchi, Hideki

× Setouchi, Hideki

en Setouchi, Hideki

Shinjo, Toshiya

× Shinjo, Toshiya

en Shinjo, Toshiya

アクセス権
アクセス権 open access
アクセス権URI http://purl.org/coar/access_right/c_abf2
主題
言語 ja
主題Scheme Other
主題 石灰質砂
言語 ja
主題Scheme Other
主題 摩擦係数
言語 ja
主題Scheme Other
主題 鋼材
言語 ja
主題Scheme Other
主題 水分
言語 ja
主題Scheme Other
主題 極性
内容記述
内容記述タイプ Other
内容記述 乾燥状態および湿潤状態の石灰質砂について鋼材との摩擦試験を実施した。その結果, 摩擦特性は乾燥砂と湿潤砂では異なることが分かった。得られた主な結果を豊浦標準砂および国頭マージの結果と併せて以下に示す。(1) 乾燥土および無極性の四塩化炭素で浸した土の摩擦係数は各試験(σ_c=0.1∿0.7MPa)でばらつき, 石灰質砂の摩擦係数は相対湿度の上昇に伴い増加する。(2) 乾燥した石灰質砂の大変形時の摩擦係数は大きな値を示す。その原因は, せん断変位の増加に伴い砂と鋼材表面吸着膜の摩擦現象から砂と実鋼材表面の摩擦現象に移行するためだと推察される。(3) 湿潤状態の豊浦標準砂では, スティック・スリップ現象が確認された。(4) 湿潤状態の国頭マージの摩擦係数は, 乾燥状態の摩擦係数に比べ小さい値を示す。(5) 湿潤土におけるせん断応力と垂直応力の関係はクーロンの摩擦則に従う。(6) 土と鋼材の摩擦に関する研究においては, 水分の影響を考慮する必要がある。
内容記述タイプ Other
内容記述 The frictional characteristics between calcareous sands and the steel plate with the smooth surface were investigated experimentally. The tests were also performed on Toyoura sand and Kunigami-maji having clay minerals for the comparison of their frictional characteristics. Test results revealed that the frictional coefficients of dry calcareous sands were variations but the frictional coefficients of wet calcareous sands indicated the constant value. It was found, the frictional characteristics of sands soaked in the non-polar fluid were similar to the frictional characteristics of dry sands. The frictional characteristics of wet Toyoura sand showed the stick-slip phenomenon. No consistent relationship was found between the polarity of water and its effectiveness as a lubricant of clay minerals.
内容記述タイプ Other
内容記述 紀要論文
出版者
言語 ja
出版者 琉球大学農学部
言語
言語 jpn
資源タイプ
資源タイプ departmental bulletin paper
資源タイプ識別子 http://purl.org/coar/resource_type/c_6501
出版タイプ
出版タイプ VoR
出版タイプResource http://purl.org/coar/version/c_970fb48d4fbd8a85
識別子
識別子 http://hdl.handle.net/20.500.12000/3648
識別子タイプ HDL
収録物識別子
収録物識別子タイプ ISSN
収録物識別子 0370-4246
収録物識別子タイプ NCID
収録物識別子 AN00250548
収録物名
言語 ja
収録物名 琉球大学農学部学術報告
書誌情報
号 48, p. 103-111
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