書誌事項
- タイトル別名
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- Asymptotic Analysis of Mode II Singular Fields near a Crack Tip in a Hardening Drucker-Prager Elastic-Plastic Material
- Drucker-Prager弾塑性体のモード2型き裂先端近傍特異場の漸近解析
- Drucker Prager ダンソセイタイ ノ モード 2ガタ キレツ センタン キンボウ トクイバ ノ ゼンキン カイセキ
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In the geomechanical studies the mechanism of the shear failure for the Mode II crack extension is still an open problem. As the basic research, the purpose of this paper is, therefore, to obtain the Mode II singular fields near a crack tip.<br>The geomaterials, in general, have a pressure sensitive yield function to yield a dilatant effect. Thus, assuming a proportional loading, we obtain the asymptotic stress and displacement fields for the Mode II crack in the linear hardening Drucker-Prager elastic-plastic material.<br>For the Mode II crack of the Drucker-Prager material, the boundary conditions can not be given on the extension of the crack surface, since the informations of the boundary are unknown : This is due to the loss of symmetry or asymmetry of the displacements and the stresses because of the existence of a parameter of the dilatant effect. Then the boundary conditions for the Mode II crack are given on the crack surfaces ; that is, the jumps of the normal displacement, the normal stress, and the shear stress vanish. As a result, a very small normal stress appears on the crack surfaces. We finally examine the angular distribution of the displacement and stress fields which depend on the hardening parameter and the pressure sensitivity parameter.
収録刊行物
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- 材料
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材料 57 (9), 936-943, 2008
公益社団法人 日本材料学会
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詳細情報 詳細情報について
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- CRID
- 1390001205419611136
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- NII論文ID
- 130002085630
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- NII書誌ID
- AN00096175
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- ISSN
- 18807488
- 05145163
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- NDL書誌ID
- 9654026
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- IRDB
- NDL
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- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可