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| Evaluation Method for Compression Test Uncertainty of Typical Plate Frame Structure |
| Received:July 03, 2023 Revised:August 22, 2023 |
| View Full Text View/Add Comment Download reader |
| DOI：10.7643/issn.1672-9242.2023.09.007 |
| KeyWord:plate frame structure compression test ultimate strength uncertainty model test yield strength |
| Author | Institution |
| JIANG Ze |
China Ship Scientific Research Center, Jiangsu Wuxi , China |
| WEI Peng-yu |
China Ship Scientific Research Center, Jiangsu Wuxi , China |
| WANG Lian |
China Ship Scientific Research Center, Jiangsu Wuxi , China |
| WANG Ruo-ye |
China Ship Scientific Research Center, Jiangsu Wuxi , China |
| GE Shen-yu |
China Ship Scientific Research Center, Jiangsu Wuxi , China |
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| Abstract: |
| In view of the low accuracy of the test results caused by the factors such as test site, test environment, test method, test model and test equipment in the ultimate strength test of ship structures, the work aims to analyze the main sources of uncertainty in the compression test of typical stiffened plate structures, and put forward measures and methods to reduce the test uncertainty. Based on the uncertainty analysis theory, the typical stiffened plate structure was designed to carry out the compression test, and the sources of uncertainty such as model material, model processing and test system were systematically analyzed. The uncertainty under ultimate compression load was evaluated. A set of uncertainty evaluation method for ultimate strength compression test of stiffened plate structure was established. For the ultimate compression load of a typical stiffened plate structure, the uncertainty caused by the material yield strength was the largest, followed by the uncertainty caused by the thickness of the main panel and web. The height of the stiffener web and the size of the main panel had a certain impact on the uncertainty of the test results, and the uncertainty caused by the loading servo control system could be ignored. It can be concluded that material yield strength, plate thickness and other factors have a great impact on the uncertainty of ultimate load. In the subsequent similar test model material selection, model processing and other stages, strict control should be carried out to ensure that the key parameters such as material and plate thickness are consistent with the design value, thus improving the reliability and accuracy of test results. |
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