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The Investigation of Macroscopic Mechanical Characteristic and Formability of Material with Periodical Sub-macroscopic Structure
http://hdl.handle.net/10212/2565
http://hdl.handle.net/10212/2565bdf6d83f-2562-4876-9075-796411d83bf0
| 名前 / ファイル | ライセンス | アクション |
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全文 (22.5 MB)
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内容・審査結果の要旨 (160.0 KB)
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| Item type | 学位論文 / Thesis or Dissertation(1) | |||||||||
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| 公開日 | 2022-04-21 | |||||||||
| タイトル | ||||||||||
| タイトル | The Investigation of Macroscopic Mechanical Characteristic and Formability of Material with Periodical Sub-macroscopic Structure | |||||||||
| 言語 | en | |||||||||
| その他のタイトル | ||||||||||
| その他のタイトル | 周期的なサブマクロ構造を有する素材の巨視的な力学特性および成形性の発現メカニズムの解明 | |||||||||
| 言語 | ja | |||||||||
| 作成者 |
劉, 午阳
× 劉, 午阳
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| 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 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Tailored materials | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Lightweighting | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Duplex embossed sheet | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Sub-macroscopic structure | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Uniaxial tension | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Bending | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Apparent rigidity | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Apparent plastic anisotropy | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Apparent mechanical properties | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Formability | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Deep drawing | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Flange deformation behavior | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Hole expansion | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Punch stretch | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | In-plane compression | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | Annealing process | |||||||||
| 主題 | ||||||||||
| 言語 | en | |||||||||
| 主題Scheme | Other | |||||||||
| 主題 | FE simulation | |||||||||
| 内容記述 | ||||||||||
| 内容記述タイプ | Abstract | |||||||||
| 内容記述 | In recent decades, lightweight has become an important issue from the viewpoint of realizing a low carbon society and securing collision safety. Materials with periodic structures have been widely applied as lightweight constructions. It is considered that the flexural rigidity and functionality can be enhanced by embossing process. Sheet metal has uniform characteristics depending on aggregate structure. After being subjected to embossing process, properties would also depend on this sub-macroscopic structure. Therefore, such an embossed sheet is considered to be a sheet with a new macrostructure superposed by microscopic and sub-macroscopic features. This thesis aims to evaluate the macroscopic mechanical characteristic and formability and their relationship of embossed sheets. In the Chapter 3, to investigate the apparent elastic rigidities of embossed sheets, uniaxial tensile and bending tests for embossed sheets were conducted. From the results, the intrinsic apparent elastic rigidities and their variations depend on pre-uniaxial tension deformation were investigated. In the Chapter4, to understand the apparent plastic anisotropy of an embossed sheet under uniaxial tension, experiments and simulations were conducted. From the results, their intrinsic apparent plastic deformation anisotropies were investigated. It was confirmed that the apparent plastic anisotropy emerges as a superposition of two anisotropies. A simple superposition model was also proposed. In the Chapter5 and 6 the effect of work hardening and thickness distribution derived from the embossing process on apparent mechanical properties were also investigated. It is considered that the formability is correlated with the mechanical properties. In the Chapter 7, Swift deep drawing test was conducted in order to investigate the deep drawability and flange deformation behavior of embossed sheets. It was thought that embossed sheets have a strong SD effect. In the Chapter8, in-plane compression tests were investigated numerically. The apparent in-plane compression properties and the difference from that of uniaxial tension was investigated. In the Chapter 9 and 10, the stretch-flange ability and punch stretch ability of embossed sheets were evaluated by hole expansion and punch stretch. The effects of embossing process on these deformation behavior and fracture style were investigated and discussed. | |||||||||
| 言語 | en | |||||||||
| 日付 | ||||||||||
| 日付 | 2020-03-25 | |||||||||
| 日付タイプ | Issued | |||||||||
| 言語 | ||||||||||
| 言語 | eng | |||||||||
| 資源タイプ | ||||||||||
| 資源タイプ識別子 | http://purl.org/coar/resource_type/c_db06 | |||||||||
| 資源タイプ | doctoral thesis | |||||||||
| 出版タイプ | ||||||||||
| 出版タイプ | VoR | |||||||||
| 出版タイプResource | http://purl.org/coar/version/c_970fb48d4fbd8a85 | |||||||||
| 学位授与番号 | ||||||||||
| 学位授与番号 | 甲第955号 | |||||||||
| 学位名 | ||||||||||
| 言語 | ja | |||||||||
| 学位名 | 博士（工学） | |||||||||
| 学位授与年月日 | ||||||||||
| 学位授与年月日 | 2020-03-25 | |||||||||
| 学位授与機関 | ||||||||||
| 学位授与機関識別子Scheme | kakenhi | |||||||||
| 学位授与機関識別子 | 14303 | |||||||||
| 言語 | ja | |||||||||
| 学位授与機関名 | 京都工芸繊維大学 | |||||||||
