Advanced reproducing kernel meshfree modeling of cracked curved shells for mixed-mode stress resultant intensity factors
Engineering Fracture Mechanics 233 巻
107012- 頁
2020-05-04 発行
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| ファイル情報(添付) | |
| タイトル ( eng ) |
Advanced reproducing kernel meshfree modeling of cracked curved shells for mixed-mode stress resultant intensity factors
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| 作成者 |
Dai Ming-Jyun
Sadamoto Shota
Yu Tiantang
Bui Tinh Quoc
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| 収録物名 |
Engineering Fracture Mechanics
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| 巻 | 233 |
| 開始ページ | 107012 |
| 抄録 |
A meshfree approach for analyzing the fracture mechanics parameters in cracked curved shells is presented. The reproducing kernel (RK) meshfree method and mapping technique are employed to approximate cracked curvilinear surfaces and field variables. In order to model the crack segment, the meshfree discretization techniques are used. The stabilized conforming nodal integration (SCNI) and sub-domain stabilized conforming integration (SSCI) techniques are adopted to accurately integrate the stiffness matrix. The contour integral is chosen to evaluate the fracture mechanics parameters and discretized using the RKs and SSCI. The J-integral value is separated into symmetric and asymmetric components using the decomposition method to extract the mode-I and -II stress resultant intensity factors (SRIFs). The numerical results reveal that the accurate J-integral value and mixed-mode SRIFs of cracked curved shells can be effectively evaluated using the proposed formulation and discretization. The simplified fatigue crack propagation is also presented.
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| 著者キーワード |
Curved shell
Fracture
Meshfree method
Convected coordinate system
J-integral
Stress intensity factors
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| 内容記述 |
The first author (Ming-Jyun Dai) would like to express his appreciation for the financial support received from the Fundamental Research Developing Association for Shipbuilding and Offshore (REDAS). This study was supported by the National Natural Science Foundation of China (Grant No. 11972146), whose financial support is gratefully acknowledged.
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| 言語 |
英語
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| 資源タイプ | 学術雑誌論文 |
| 出版者 |
Elsevier
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| 発行日 | 2020-05-04 |
| 権利情報 |
© 2020. This manuscript version is made available under the CC-BY-NC-ND 4.0 license https://creativecommons.org/licenses/by-nc-nd/4.0/
This is not the published version. Please cite only the published version.
この論文は出版社版ではありません。引用の際には出版社版をご確認、ご利用ください。
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| 出版タイプ | Accepted Manuscript（出版雑誌の一論文として受付されたもの。内容とレイアウトは出版社の投稿様式に沿ったもの） |
| アクセス権 | オープンアクセス |
| 収録物識別子 |
[DOI] https://doi.org/10.1016/j.engfracmech.2020.107012
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