CAJ | 학술논문

疲劳破坏是海洋平台箱体式起重机的主要失效形式之一。以 API 标准为依据，利用有限元分析软件 ANSYS 对某海洋平台箱体式起重机实际结构进行模拟，对其进行受力计算，获得液压缸上耳板与箱体连接处为危险部位。现场实际测量得到最大热点应力为315．6 MPa，应用现场提供的历史数据及 Miners 线性累加理论计算得到该起重机的剩余寿命为8．7 a。
피로파배시해양평태상체식기중궤적주요실효형식지일。이 API 표준위의거，이용유한원분석연건 ANSYS 대모해양평태상체식기중궤실제결구진행모의，대기진행수력계산，획득액압항상이판여상체련접처위위험부위。현장실제측량득도최대열점응력위315．6 MPa，응용현장제공적역사수거급 Miners 선성루가이론계산득도해기중궤적잉여수명위8．7 a。
Fatigue damage is one of the main failure modes in the cranes with box arm of offshore platform,according to API standards,the finite element analysis software ANSYS is used to simu-late the actual structure of offshore platform cranes box and perform the force calculation,finding that the most dangerous zone is the junction between the ear plate on the cylinder and the box junction.The most hot spot stress is 315.6 MPa resulting from the field actual measurement,ac-cording to the filed usage record and using Miners linear accumulative theory the remaining life of the crane is 8.7 years.