中国机械工程
中國機械工程
중국궤계공정
CHINA MECHANICAl ENGINEERING
2014年
14期
1922-1925
,共4页
鄂林仲阳%刘春川%李凤明
鄂林仲暘%劉春川%李鳳明
악림중양%류춘천%리봉명
谱元法%刚架结构%Timoshenko梁模型%动力学响应
譜元法%剛架結構%Timoshenko樑模型%動力學響應
보원법%강가결구%Timoshenko량모형%동역학향응
spectral element method%rigid frame structure%Timoshenko beam model%dynamics re-sponse
采用谱元法计算分析了复杂刚架结构的动力学响应特性，建立了直杆和Timoshenko梁的局部动力刚度阵，并组装得到了整体刚架结构的动力刚度阵。计算了刚架结构的频响曲线，并与有限元法得到的结果进行了比较，获得了刚架的固有频率和冲击载荷作用下的频域曲线。研究结果表明，谱元法可有效且准确地分析刚架结构的动力学响应特性，尤其适合中高频动态响应特性分析，与有限元方法相比，其精度高且用时短。
採用譜元法計算分析瞭複雜剛架結構的動力學響應特性，建立瞭直桿和Timoshenko樑的跼部動力剛度陣，併組裝得到瞭整體剛架結構的動力剛度陣。計算瞭剛架結構的頻響麯線，併與有限元法得到的結果進行瞭比較，穫得瞭剛架的固有頻率和遲擊載荷作用下的頻域麯線。研究結果錶明，譜元法可有效且準確地分析剛架結構的動力學響應特性，尤其適閤中高頻動態響應特性分析，與有限元方法相比，其精度高且用時短。
채용보원법계산분석료복잡강가결구적동역학향응특성，건립료직간화Timoshenko량적국부동력강도진，병조장득도료정체강가결구적동력강도진。계산료강가결구적빈향곡선，병여유한원법득도적결과진행료비교，획득료강가적고유빈솔화충격재하작용하적빈역곡선。연구결과표명，보원법가유효차준학지분석강가결구적동역학향응특성，우기괄합중고빈동태향응특성분석，여유한원방법상비，기정도고차용시단。
A spectral element method was used to analyze dynamics response characteristics of the complex rigid frame structure .The local dynamic stiffness matrices of straight bar and Timoshenko beam could be established ,and the global dynamic stiffness matrix of the frame structures could be obtained .Comparing frame harmonic response based on spectral element method and finite element method ,and calculating the natural frequencies and frequency domain results under impact load fur-ther ,it show s that the spectral element method can be used effectively and accurately to analyze the dynamic response characteristics of complex frame structures ,especially for the high frequency re-sponses ,and the precision and efficiency are high compared with the finite element method .
