碩士 / 國立臺灣大學 / 工程科學及海洋工程學研究所 / 93 / The experimental and numerical studies of linear and nonlinear dynamic response of cylindrical shell structures with stiffener rings subjected to underwater explosion in a 4m×4m×4m water tank have been examined in this work. The dimensions of cylindrical structures are Length × Diameter × thickness = 90cm×30cm×1mm. Two models were examined:
- cylindrical shell structure with outside stiffener rings made of 1mm mild steel
- cylindrical shell structure with inside stiffener rings made of 1mm mild steel
The experiments of dynamic response of cylinder subjected to UNDEX were performed with different standoff distances, which were varied from 30cm to 190cm. The standoff from 50cm to 190cm were designed to observe the linear responses, and the standoff 30cm was used to observe the plastic failures of cylindrical structures.
The modified measured pressure data were used as incident pressure of shock wave.The numerical analysis for the same experimental model was performed forcomparison. The USA and LS/DYNA software systems were selected as analysis tools.
The accelerations and dynamic strains obtained from experiment and numerical analysis were compared.
| Identifer | oai:union.ndltd.org:TW/093NTU05345038 |
| Date | January 2005 |
| Creators | Tsung-Lin Chou, 周宗燐 |
| Contributors | 洪振發 |
| Source Sets | National Digital Library of Theses and Dissertations in Taiwan |
| Language | zh-TW |
| Detected Language | English |
| Type | 學位論文 ; thesis |
| Format | 151 |
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