| 卢正起,李楷,常松亮,苑志江,蒋晓刚.基于ALE的充气式海上围栏系统气囊单元优化设计[J].,2023,63(3):282-290 |
| 基于ALE的充气式海上围栏系统气囊单元优化设计 |
| inflated offshore fender system based on ALE |
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| DOI：10.7511/dllgxb202303008 |
| 中文关键词: 充气式海上围栏系统 气囊优化 ALE算法 正交试验 |
| 英文关键词: inflated offshore fender system airbag optimization ALE algorithm orthogonal test |
| 基金项目:国家自然科学基金资助项目(51509033)；中央高校基本科研业务费专项资金资助项目(DUT19JC51). |
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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10、20、30 m/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、最大反向加速度、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．借助正交试验进一步优化双层多气室气囊的设计参数．通过优化后的结果发现，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9%，显著提高了气囊的拦截能力． |
| 英文摘要: |
| Aiming at type selection of airbag unit for inflated offshore fender system, two improved types of single-layer multi-chamber airbag and double-layer multi-chamber airbag are proposed on the basis of single-layer single-chamber airbag, and three typical interception scenarios of small boat with initial speeds of 10, 20 and 30 m/s vertically impacting the middle of the airbag are built. Based on arbitrary Lagrange-Euler (ALE) algorithm, numerical simulation is conducted by using FE software LS-DYNA to compare interception effects of three types of airbag units, which are single-layer single-chamber airbag, single-layer multi-chamber airbag and double-layer multi-chamber airbag, via the data including the maximum impact force, the maximum deceleration and element failure ratio of the boat. Double-layer multi-chamber airbag turns out to be with the strongest interception ability. The design parameters of the double-layer multi-chamber airbag are further optimized by means of orthogonal test. The results of the optimization reveal that the maximum impact force of the optimized double-layer multi-chamber airbag is increased by 9% compared to the original design, so the interception capacity of the airbag is significantly improved. |
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