CAJ | 학술논문

文章将Monte Carlo抽样法和有限元非线性屈曲计算相结合，利用参数化方法模拟了满足Gumble分布和Gauss分布的钢板腐蚀减薄量在超大潜深球壳开孔结构上的分布，对各状况进行了100个样本的计算，并分析了腐蚀量均值和方差对结构在静水外压下极限承载能力的影响，结果表明，腐蚀样本数据分散度的大小几乎不产生影响，产生主要影响的是样本均值，失稳压力随腐蚀减薄量均值的增大而显著地线性降低。
문장장Monte Carlo추양법화유한원비선성굴곡계산상결합，이용삼수화방법모의료만족Gumble분포화Gauss분포적강판부식감박량재초대잠심구각개공결구상적분포，대각상황진행료100개양본적계산，병분석료부식량균치화방차대결구재정수외압하겁한승재능력적영향，결과표명，부식양본수거분산도적대소궤호불산생영향，산생주요영향적시양본균치，실은압력수부식감박량균치적증대이현저지선성강저。
Based on the Monte Carlo sampling theory and FEM nonlinear buckling analysis, APDL program was developed to simulate Gumble & Gauss distributions of corrosion-thinned status of super-diving spheri-cal hull with round hole structure. The calculation of 100 samples was accomplished for each different con-ditions. The influence of sample mean and variance on the collapse pressure of model under external hy-drostatic pressure was also analyzed. Results show that sample variance has little effect on the critical pres-sure, which is mainly determined by corrosion sample mean, and collapse pressure declines evidently and linearly with increment of the mean value of corrosion thinned data.