Development of effective calculaton procedure for hull girder ultimate strength under lateral loading and after damaged by collision

2016 Fiscal Year Final Research Report

• Project/Area Number: 26289334
• Research Category: Grant-in-Aid for Scientific Research (B)
• Allocation Type: Partial Multi-year Fund
• Section: 一般
• Research Field: Naval and maritime engineering
• Research Institution: Kyushu University
• Principal Investigator: Yoshikawa Takao 九州大学, 工学(系)研究科(研究院), 教授 (50380572)
• Co-Investigator(Kenkyū-buntansha): 前田 正広 九州大学, 工学(系)研究科(研究院), 助教 (70173713)
• Project Period (FY): 2014-04-01 – 2017-03-31
• Keywords: 最終強度 / 船体縦曲げ強度 / 横荷重影響 / FEM解析 / Smith法 / 換算細長比 / 形状初期不正

Outline of Final Research Achievements

Hull girder ultimate strength of two types of bulk carriers are calculated under the alternative loading condition which gives much effect of lateral loading. It was confirmed that the hull girder untimate strength reduces 25％ due to lateral loading when hogging condition in which the bottom parts are in compression. The accuracy of FE calculations for ultimate strength are confirmed by comparison to the experimental results for four points bending tesst of box girder models. Moreover, the effect of uncertainties such as the amplitude of geometrical initial imperfectiona and thicvkness reduction by corrosin on the hull girder ultimate strength are investigated utilizing the techniques of Monte Calro Simulations.

Free Research Field

船体構造力学