CAJ | 학술논문

船舶中的销轴结构在工作过程中的受力情况类似于一悬臂梁。船舶在航行过程中的激励载荷会使销轴上的支撑结构做轻微晃动，造成销轴末端受到较大应力，导致销轴结构疲劳寿命较差。为了提高某船用销轴结构疲劳寿命，改善其设计质量。本文构建销轴的三维结构，并采用有限单元法建立销轴结构双工况有限元模型，获得销轴结构应力分布以及销轴末端位移参数。并将随机载荷谱、疲劳寿命曲线、有限元法相结合，获得销轴结构在外界随机激励载荷情况下的疲劳破坏点，该方法同样可为船舶其余结构设计提供参考。
선박중적소축결구재공작과정중적수력정황유사우일현비량。선박재항행과정중적격려재하회사소축상적지탱결구주경미황동，조성소축말단수도교대응력，도치소축결구피로수명교차。위료제고모선용소축결구피로수명，개선기설계질량。본문구건소축적삼유결구，병채용유한단원법건립소축결구쌍공황유한원모형，획득소축결구응력분포이급소축말단위이삼수。병장수궤재하보、피로수명곡선、유한원법상결합，획득소축결구재외계수궤격려재하정황하적피로파배점，해방법동양가위선박기여결구설계제공삼고。
The pin of the ship structure is similar to a cantilever during operation of the forces. Excitation during the ship voyage will resulting a slight shaking of the pin supporting structure,this will cause a great stress in the back of the pin shaft,and finally resulting in shaft fatigue. In order to improve the fatigue life of a pin structure and improve its design quality. In this paper, we established the three-dimensiona model of the pin shaft structure and then its finite element model by using finite element method,and obtained the stress distribution and displacement parameters of the pin shaft. With the random load spectrum, fatigue life curve,the finite element method,the fatigue point of the pin shaft under external random excitation was finally obtained,this method can provide a reference for the similar structure design of ship.