装备环境工程
裝備環境工程
장비배경공정
EQUIPMENT ENVIRONMENTAL ENGINEERING
2013年
4期
23-29
,共7页
刘龙涛%李传日%马甜%乔亮
劉龍濤%李傳日%馬甜%喬亮
류룡도%리전일%마첨%교량
有限元%疲劳损伤%频域法
有限元%疲勞損傷%頻域法
유한원%피로손상%빈역법
finite element%fatigue damage%frequency domain method
为了对某机载产品进行结构疲劳分析,采用有限元分析软件ANSYS对产品结构进行了模态分析和随机振动分析,结合模态试验修正了有限元模型。由随机振动分析得到应力响应功率谱,最后利用频域方法计算结构的疲劳损伤。仿真结果基本吻合强化试验结果,并给出了产品结构设计改进方案。
為瞭對某機載產品進行結構疲勞分析,採用有限元分析軟件ANSYS對產品結構進行瞭模態分析和隨機振動分析,結閤模態試驗脩正瞭有限元模型。由隨機振動分析得到應力響應功率譜,最後利用頻域方法計算結構的疲勞損傷。倣真結果基本吻閤彊化試驗結果,併給齣瞭產品結構設計改進方案。
위료대모궤재산품진행결구피로분석,채용유한원분석연건ANSYS대산품결구진행료모태분석화수궤진동분석,결합모태시험수정료유한원모형。유수궤진동분석득도응력향응공솔보,최후이용빈역방법계산결구적피로손상。방진결과기본문합강화시험결과,병급출료산품결구설계개진방안。
Modal analysis and random vibration analysis of airborne product structure was carried out using the finite element analysis software ANSYS for its fatigue analysis. The finite element model was corrected with modal test. Stress response power spectrum was obtained from random vibration analysis. Fatigue damage of the structure was calculated using frequency domain method. The simulation results are in agreement with the reliability enhancement testing results. An optimization scheme for the product structure design was given.