噪声与振动控制
譟聲與振動控製
조성여진동공제
NOISE AND VIBRATION CONTROL
2014年
2期
34-40
,共7页
振动与波%层合板%分层理论%有限元%固有频率%振型
振動與波%層閤闆%分層理論%有限元%固有頻率%振型
진동여파%층합판%분층이론%유한원%고유빈솔%진형
vibration and wave%laminated composite plates%layerwise theory%finite element method%natural frequency%mode shape
采用有限元方法并结合分层理论对复合材料层合板的固有频率和振型进行理论计算，再用实验验证。通过分层有限元模型求解层合板的位移模式，对层合板固有频率进行计算。分析有限元网格数，铺设角度、铺设层数等对固有频率的影响，获得层合板自由振动的前九阶振型，采用实验进行了验证。结果表明，提出的方法可较精确计算层合板的固有频率和振型。
採用有限元方法併結閤分層理論對複閤材料層閤闆的固有頻率和振型進行理論計算，再用實驗驗證。通過分層有限元模型求解層閤闆的位移模式，對層閤闆固有頻率進行計算。分析有限元網格數，鋪設角度、鋪設層數等對固有頻率的影響，穫得層閤闆自由振動的前九階振型，採用實驗進行瞭驗證。結果錶明，提齣的方法可較精確計算層閤闆的固有頻率和振型。
채용유한원방법병결합분층이론대복합재료층합판적고유빈솔화진형진행이론계산，재용실험험증。통과분층유한원모형구해층합판적위이모식，대층합판고유빈솔진행계산。분석유한원망격수，포설각도、포설층수등대고유빈솔적영향，획득층합판자유진동적전구계진형，채용실험진행료험증。결과표명，제출적방법가교정학계산층합판적고유빈솔화진형。
A detailed simulation of natural frequencies and mode shapes of laminated composite plates is presented based on the layerwise theory and the corresponding finite element method. The influence of finite element mesh size, fiber orientation, ply number, etc. on the natural frequencies of a laminated plate is analyzed. And its natural frequencies of the first 9 orders are obtained. The simulation result is verified by the experiment. Consequently, the applicability and the effectiveness of the present method for accurately computing the natural frequencies of laminated composite plates are demonstrated.
