CAJ | 학술논문

以大型有限元分析软件 ANSYS 为工具，对平封头结构进行弹性和弹－塑性分析。根据有限元分析结果，分别采用 ASME VIII－2规范和 EN 13445规范中的方法对平封头结构进行疲劳评定，得到了不同方法下平封头结构的许用循环次数。结合 Hinnant 等的压力容器平封头疲劳试验数据，对各种疲劳设计方法进行分析比较。结果表明，规范中的疲劳评定方法预测的寿命均小于试样的实际寿命，基于 ASME VIII－2弹性分析法得出的疲劳寿命最接近实际值。
이대형유한원분석연건 ANSYS 위공구，대평봉두결구진행탄성화탄－소성분석。근거유한원분석결과，분별채용 ASME VIII－2규범화 EN 13445규범중적방법대평봉두결구진행피로평정，득도료불동방법하평봉두결구적허용순배차수。결합 Hinnant 등적압력용기평봉두피로시험수거，대각충피로설계방법진행분석비교。결과표명，규범중적피로평정방법예측적수명균소우시양적실제수명，기우 ASME VIII－2탄성분석법득출적피로수명최접근실제치。
A parametric model of flat head was established by using the conventional finite element software ANSYS.According to the results of elastic and elastic-plastic stress analysis,fatigue assessments were carried out respectively with the methods specified in ASME VIII-2 code and EN 13445 code to obtain the permissible numbers of cycles.On the basis of fatigue test data by Hinnant,the predicted fatigue life of the flat head was compared with the practical fatigue life.The results show that all the permissible numbers of cycles obtained from different assessment methods are less than the actual life of specimen,and the elastic stress analysis result based on ASME VIII-2 code is closest to the test value.