CAJ | 학술논문

为解决某型发动机P″2导管根部易发生疲劳断裂的问题,采用有限元分析的方法对P″2导管进行振动模态分析和谐响应计算,得到其固有振动频率以及应力分布图,并针对提出的两种改装方案进行仿真比较,经过综合分析得到最佳的改装方案.对P″2导管进行应变测量,通过试验数据验证改装方案的可行性.
위해결모형발동궤P″2도관근부역발생피로단렬적문제,채용유한원분석적방법대P″2도관진행진동모태분석화해향응계산,득도기고유진동빈솔이급응력분포도,병침대제출적량충개장방안진행방진비교,경과종합분석득도최가적개장방안.대P″2도관진행응변측량,통과시험수거험증개장방안적가행성.
@@@@Finite element analysis method was adopted to solve the fatigue fracture problem of the root of a certain engine’s P″2 pipe. The nature vibration frequency and the stress distribution of the P″2 pipe were gotten by the vibration modal analysis and the har-monic response calculation. Comparing the two reform plans through simulation,the better one was chosen by comprehensively analy-sis. Finally,the feasibility of the reform plan is validated by the strain measurement to the P″2 pipe.