双整体式止屈器结构性能研究及优化设计

发布时间：2018-05-18 01:29

本文选题：双整体式止屈器 + 穿越模式　；参考：《海洋工程》2017年02期

【摘要】：建立了双整体式止屈器结构的三维有限元模型,模拟其在外部静水压力作用下的屈曲穿越过程,总结不同穿越破坏模式的产生条件及机理。对影响穿越破坏压力的主要参数进行敏感性分析,结果表明止屈器布置间距、两个止屈器的几何尺寸均会对整体止屈性能产生影响。在拟合的双整体式止屈器效率公式的基础上,依据非线性有约束优化理论,分别采用经典算法和智能遗传算法确定模型最优解,提出了一种兼顾结构重量与止屈性能的最优双整体式止屈器结构型式;并经计算分析,验证了该方法的可靠性和适应性。
[Abstract]:A three-dimensional finite element model of double integral buckler structure is established to simulate the buckling and traversing process under external hydrostatic pressure. The conditions and mechanism of different failure modes are summarized. The sensitivity analysis of the main parameters affecting the traversing failure pressure shows that the spacing of the buckler arrangement and the geometric size of the two restraints will have an effect on the overall anti-buckling performance. On the basis of the fitted efficiency formula of double integral anti-buckler, according to the nonlinear constrained optimization theory, classical algorithm and intelligent genetic algorithm are used to determine the optimal solution of the model, respectively. In this paper, an optimal structure type of dual integral anti-buckling device is proposed, which takes account of both weight and flexural performance of the structure, and the reliability and adaptability of the method are verified by calculation and analysis.
【作者单位】：天津大学水利工程仿真与安全国家重点试验室;高新船舶与深海开发装备协同创新中心;
【基金】：国家自然科学基金资助项目(51239008);国家自然科学基金创新研究群体科学基金资助项目(51321065) 国家重点基础研究发展计划资助项目(973)(2014CB046805)
【分类号】：P756.2

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