| Autor: |
Masato Kim, Yasumi Kawamura, Tetsuo Okada, Yoshiaki Naruse, Rikuto Umezawa, Kinya Ishibashi, Hiroyuki Koyama |
| Rok vydání: |
2020 |
| Předmět: |
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| Zdroj: |
Lecture Notes in Civil Engineering ISBN: 9789811546716 |
| DOI: |
10.1007/978-981-15-4672-3_6 |
| Popis: |
This paper presents a method for deriving the practical collapse strength against lateral pressure of hull local members such as plates and stiffeners which makes use of non-linear FEA calculations. Unlike the collapse strength against compressive axial loads, the collapse strength against lateral pressure cannot be clearly identified because such structures are capable of withstanding lateral pressure caused by membrane stress even though they may deform plastically. This paper, therefore, defines “collapse” to be the condition in which residual deflection develops up to a defined criterion after the unloading of both axial loads and lateral pressures, where the maximum lateral pressure that does not cause “collapse” is regarded to be the practical collapse strength. Utilizing this criterion, the practical collapse strength against lateral pressure of various types and scantlings of plates and stiffeners is investigated and compared with the assessment formulae for hull local members specified in the International Association of Classification Societies’ (IACS) Common Structural Rules (CSR). Additionally, the effects of the axial loads acting together with lateral pressures are also studied. The results of the study show that compressive axial loads are more critical than tensile axial loads with respect to collapse strength. For thinner plates and smaller stiffeners, tensile axial load gains their collapse strength. The out-plane component of internal force due to the axial load is considered to cause these phenomena. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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