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Formulation and Implementation of Effective Stress Coefficient of Rock to FEM

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Please use this identifier to cite or link to this item:http://hdl.handle.net/2115/67122

Title: Formulation and Implementation of Effective Stress Coefficient of Rock to FEM
Authors: Fujii, Yoshiaki Browse this author →KAKEN DB
Dassanayake, Anjula Browse this author
Alam, A.K.M.Badrul Browse this author
Fukuda, Daisuke Browse this author →KAKEN DB
Keywords: Rock
Effective stress coefficient
Formulation
FEM
Issue Date: 13-Sep-2016
Publisher: 資源・素材学会
Journal Title: MMIJ Fall Meeting 2016
Volume: 2016
Start Page: 2504
Abstract: The authors tried to evaluate four types of effective stress coefficients of rock; one under hydrostatic pressure (Biot's effective stress coefficient), one for peak strength, one for residual strength and one for fractured rock. The types of rock considered were Kimachi sandstone, Bibai sandstone, Inada granite and Shikotsu welded tuff. Biot's effective stress coefficient obtained by conventional hydrostatic compression test method and the coefficient for peak and residual strengths obtained by the modified failure envelope method which was newly developed by the authors decreased with confining pressure. The effective stress coefficient for fractured rock was evaluated under hydrostatic pressure for post-failure specimens and it was slightly smaller than one. An equation which represents the coefficient by stress was derived and implemented into a FEM software. This paper explains the equation and the example of calculation results.
Description: MMIJ Fall Meeting 2016, Sept. 13-15 2016, Morioka, Japan (資源・素材2016(盛岡): 平成28年度資源・素材関係学協会合同秋季大会, 2016年9月13日~15日, 岩手大学, 盛岡市)
Conference Name: MMIJ Fall Meeting 2016
資源・素材2016(盛岡): 平成28年度資源・素材関係学協会合同秋季大会
Conference Place: Morioka
盛岡市
Type: proceedings
URI: http://hdl.handle.net/2115/67122
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 藤井 義明

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