Abstract: Strict design criteria will be proposed for the strength and weight of the hatch cover in the practical engineering application,. whichIt brings challenges to the structural design of the hatch cover. A design concept of the hatch cover based on the weight optimization objective is presented for the hatch cover design of the Russia Ice Resistant Self-Propelled Drifting Platform. Firstly, the functional requirements of the hatch cover are analyzed and the scheme design is carried out by the partial variable proportion optimization method. Then the finite element strength and deflection are checked by ABAQUS for further discussion of the stress concentration of the structure to propose the optimization scheme of the structure. Finally, the nonlinear buckling strength check of the initial defects is carried out by the arc length method. The weight of the hatch cover after structural optimization is reduced by 4.3% with overall rigidity increased by 11%, and the yield strength and the buckling strength meet the requirements. The practical application shows that the design concept in the current study can provide reference for the design of the same type hatch covers.

Key words: hatch cover, weight optimization, finite element, strength, buckling check

摘要： 舱口盖在实际工程应用时,会对强度与质量同时提出较为严苛的设计指标,这对舱口盖的结构设计工作带来了挑战。鉴此,该文以俄罗斯Ice Resistant Self-Propelled Drifting Platform工程为例,提出一种基于质量优化目标的舱口盖设计思路。首先,分析了所研究舱口盖的功能要求,采用部分量比例优化的手段进行方案设计;然后,通过ABAQUS进行有限元强度与挠度校核,进一步探讨了结构的应力集中问题并提出方案对结构进行优化;最后,通过弧长法进行初始缺陷的非线性屈曲强度校核。结构优化后的舱口盖质量减轻4.3%,整体刚性提高11%,屈服强度和屈曲强度均满足要求。实际应用结果表明：该设计思路可为同类型舱口盖设计提供借鉴参考。

关键词: 舱口盖, 质量优化, 有限元, 强度, 屈曲校核