書誌事項
- タイトル別名
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- Nonlinear Finite Element Analysis of Collapse Loads of Cylindrical Shells Subjected to Combined Longitudinal Thermal Loads and External Pressure
- ジク ホウコウ ネツ カジュウ ト ガイアツ オ ウケル アツニク エントウ ノ ホウカイ カジュウ ノ ヒセンケイ ユウゲン ヨウソ カイセキ
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説明
The inner tube of the double-tube reactors used in some chemical process units must be designed to resist buckling. When the inner tube is operated at a higher temperature and at a lower pressure and outer tube is operated at a lower temperature and at a higher pressure, the inner tube will be subjected to combined thermal loads and external pressure. ASME Code Sec. VIII Div. 1 provides a design procedure for shells, based on a B-chart, to ensure against buckling under external pressure, however, additional consideration should be made where plastic deformation may occur due to very large longitudinal thermal loads.<br/> In this study, nonlinear finite element analyses were performed to investigate the collapse of thick-walled cylindrical shells subjected to combined thermal loads and high external pressures. Two nonlinearities, a material nonlinearity (elastic-plastic behavior) and a geometric nonlinearity (large deformation) , were considered in these analyses. The effects of initial imperfection in the shells (out-of-roundness) as well as of thermal loads were studied. The results showed that the longitudinal thermal loads reduce the plastic collapse load especially when the thermal loads are tensile. It was also shown that the loading sequence has a large effect on the collapse load especially when the thermal stress was larger.
収録刊行物
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- 圧力技術
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圧力技術 46 (5), 311-318, 2008
一般社団法人 日本高圧力技術協会
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詳細情報 詳細情報について
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- CRID
- 1390282679593729792
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- NII論文ID
- 130004446818
- 10024326987
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- NII書誌ID
- AN00011762
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- ISSN
- 13479598
- 03870154
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- NDL書誌ID
- 9677613
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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
- NDL
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可