Reliability Analysis of Filament-wound Composite Pressure Vessels
碩士 === 國立交通大學 === 機械工程系 === 88 === A method formulated on the basis of the concept of first-ply failure and the structural reliability theory is presented for the reliability analysis of filament-wound composite pressure vessels with random strength parameters. The first-ply failure analy...
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| Format: | Others |
| Language: | zh-TW |
| Published: |
2000
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| Online Access: | http://ndltd.ncl.edu.tw/handle/91388993514382406256 |
| Summary: | 碩士 === 國立交通大學 === 機械工程系 === 88 === A method formulated on the basis of the concept of first-ply failure and the structural reliability theory is presented for the reliability analysis of filament-wound composite pressure vessels with random strength parameters. The first-ply failure analysis of the filament wound composite pressure vessels is achieved via the use of different phenomenological failure criteria and the finite element method. The maximum stress and Tsai-Hill criteria are used to establish the limit state equation. The direct numerical integration method together with the series system hypothesis are adopted to compute the reliability of the pressure vessels. Experimental investigations of lamina strength distributions and first-ply failure of filament-wound composite pressure vessels were performed. It has been found that the lamina strengths and the first-ply failure load of the vessels can be well fitted by Weibull distributions. Baseline probability distributions of lamina strength parameters constructed from the tests are used in the reliability analyses of the filament-wound composite pressure vessels. The accuracy of the proposed methods in reliability analyses of the filament wound composite pressure vessels are verified by the experimental results.
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