CAJ | 학술논문

针对具有开口群的船舶集成上层建筑,使用ANSYS分析其开口区域的强度特性.在多方案有限元计算的基础上,提出兼顾计算精度和计算成本的强度计算模型.基于该模型,以影响开口区域应力的主要设计参数为设计变量,构造了快速预报开口群角隅节点应力的4种代理模型,并对这4种代理模型进行误差检验,得出在所选取的样本点比例下,Kriging代理模型拟合精度较高.因此,采用构造的Kriging模型分析了结构尺寸对开口角隅节点应力的影响.结果表明:开口面板厚度的变化对角隅节点应力水平影响最大.
침대구유개구군적선박집성상층건축,사용ANSYS분석기개구구역적강도특성.재다방안유한원계산적기출상,제출겸고계산정도화계산성본적강도계산모형.기우해모형,이영향개구구역응력적주요설계삼수위설계변량,구조료쾌속예보개구군각우절점응력적4충대리모형,병대저4충대리모형진행오차검험,득출재소선취적양본점비례하,Kriging대리모형의합정도교고.인차,채용구조적Kriging모형분석료결구척촌대개구각우절점응력적영향.결과표명:개구면판후도적변화대각우절점응력수평영향최대.
The strength of the opening area of a ship integrated superstructure is investigated in this paper by using the ANSYS software. A simplified FEM model considering both simulation accuracy and computa-tional expense is developed based on the comparison between the results of several FEM models. Based on this simplified FEM model,four kinds of surrogate models that are used to efficiently predict the corner stress of the opening area of the integrated superstructure are constructed. Meanwhile,error tests of these four surrogate models are carried out, and the results indicate that Kriging model performs best in terms of fitting accuracy among the four models. Finally, the influences of three different major structure sizes on the stress of the opening area is discussed, where it is concluded that the thickness of the plate has the greatest effect on the corner stress of the opening area.