英文摘要:The crashworthiness of bulbous bow is an important aspect of hull structures accidental ultimate state design and security assessment. The present work researched the crash mechanism of bulbous bow with rigid body and ice load using non-linear finite element method, the results shows that Bow and rigid body collision, damage and failure zone in the rigid body contact, the deck also produced vibration deformation, the deflection is about 5% wide type; No matter with rigid or ice collision load, bulbous bow plate stress time curve and energy time curve are highly nonlinear, the vibration period of bulbous bow is about 4 ms; Bow and ice load collision, can absorb the order of main hull plate, bulbous bow plate, deck, longitudinal ribs and transverse ribs of each member. Therefore, in the crashworthiness design and forecast of bulbous bow, the vibration of bulbous bow and deformation of deck plate should be sufficiently considered, the amount of vertical stiffeners should be raised adequately.
2019,41(7): 25-30 收稿日期:2017-11-05
DOI:10.3404/j.issn.1672-7649.2019.07.005
分类号:U661.4
作者简介:刘伯运(1977-),男,博士,副教授。研究方向为舰艇结构系统安全性
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