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基于ALE的充气式海上围栏系统气囊单元优化设计 |
Optimization Design of Airbag Unit for Inflated Offshore Fender System based on ALE |
投稿时间:2022-04-13 修订日期:2022-04-29 |
DOI: |
中文关键词: 充气式海上围栏系统 气囊优化 ALE 正交试验 |
英文关键词: Inflated offshore fender system Airbag optimization ALE Orthogonal experiment |
基金项目:基于语义推理的船舶舱室布置进化设计方法 |
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中文摘要: |
针对充气式海上围栏系统的气囊单元选型,在单层单气室气囊的基础上提出单层多气室气囊、双层多气室气囊两种改进型,建立静水海域中小艇以10m/s、20m/s、30m/s的初速度垂直撞击气囊中部3种典型拦截场景,基于任意拉格朗日-欧拉(ALE)算法,应用大型有限元软件LS-DYNA进行数值模拟,通过小艇的最大碰撞力、最大减速度、单元失效比等数据,分析单层单气室气囊、单层多气室气囊、双层多气室气囊3种气囊单元对来袭小艇的拦截效果,发现双层多气室气囊的拦截能力最强。通过正交试验对双层多气室气囊的设计参数进行优化。结果表明,优化后的双层多气室气囊的最大碰撞力相比原设计方案提高了6%,显著提高了气囊的拦截能力。 |
英文摘要: |
Aiming at airbag unit type selection of inflated offshore fender system, this paper proposed the concept of single-layer multi-chamber airbag and double-layer multi-chamber airbag on the basis of single-layer single-chamber airbag, built 3 typical interception scenarios of small boat with initial speeds of 10m/s, 20m/s and 30m/s vertically impacting the middle of the airbag, proceeded numerical simulation by using LS-DYNA based on ALE algorithm, compared interception effects of three types of airbag unit via the data including the maximum impact force, the maximum deceleration, element failure ratio of the boat, which are single-layer single-chamber airbag, single-layer multi-chamber airbag, double-layer multi-chamber airbag. Double-layer multi-chamber airbag turns out to be with the strongest interception ability. The design parameters of double-layer multi-chamber airbag are optimized via orthogonal experiment. The results show that the optimized airbag significantly enhances the maximum impact force by 6% compared with the original plan, which can improve the interception ability of airbag significantly. |
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