CAJ | 학술논문

为研究船体上层建筑端部的疲劳特性，设计和实施了实板厚四点弯曲疲劳模型试验。获得疲劳试验中不同应力水平下的疲劳失效循环次数，并采用定斜率极大似然法拟合应力水平－疲劳失效循环次数得到中值S－N曲线和P－S－N曲线。分别采用试验P－S－N曲线和CCS规范E曲线计算和比较研究该部位的疲劳强度。结果表明，试验得到的S－N曲线可为实船设计和分析提供参考。
위연구선체상층건축단부적피로특성，설계화실시료실판후사점만곡피로모형시험。획득피로시험중불동응력수평하적피로실효순배차수，병채용정사솔겁대사연법의합응력수평－피로실효순배차수득도중치S－N곡선화P－S－N곡선。분별채용시험P－S－N곡선화CCS규범E곡선계산화비교연구해부위적피로강도。결과표명，시험득도적S－N곡선가위실선설계화분석제공삼고。
In order to research the fatigue characteristics of the ship superstructure end, the real?thickness four?point bending model tests were designed and actualized. The number of cycles to failure in the fatigue tests were ob?tained under different stress levels. The mid?value S-N curve and P-S-N curve were drawn through the fixed?slope maximum likehood method. The fatigue strength of the position was caculated and compared by testing P-S-N curve and the E curve of CCS codes. The research showed that the S-N curve obtained from fatigue tests can offer a reference for the design and analysis of ships in practice.