各向异性参数对层合阻尼薄板损耗因子的影响  

Analysis on the Effects of Anisotropic Parameters on the Loss Factor of Laminated Damping Plates

作　　者：李明俊[1] 叶皓[1] 徐泳文[1] 万诗贵[1] 刘桂武[1] 

机构地区：[1]南昌航空工业学院环境与化学工程系,江西南昌330034

出　　处：《机械工程材料》2005年第2期10-12,20,共4页Materials For Mechanical Engineering

基　　金：江西省自然科学基金资助项目(0250039);江西省材料工程中心基金资助项目(CL0218)

摘　　要：运用各向异性层合阻尼结构理论分析方法,考察了在不同结构、不同振动模态下各层纤维铺设角度、纵横剪切模量和纵横拉伸模量等各向异性参数对各向异性层合阻尼薄板损耗因子的影响。结果表明:随着各向异性铺设层数的增多,在低阶模态下,远离阻尼芯层的各向异性铺设层的纤维铺设角度对层合阻尼薄板损耗因子的影响趋于增大,次外层纤维铺设角度的影响最大;而在高阶模态下,贴近阻尼芯层的各向异性铺设层的纤维铺设角度影响趋于增大。An anisotropic design was introduced to the laminated damping plates. The effects of anisotropic parameters, such as fibrous orientation angles and longitudinal or transverse elastic modulus in every layer, on the loss factor of anisotropic laminated damping plates for different laminated structures and modes were studied by methods of orthogonal experiments and with theory of anisotropic laminated damping structure. With increasing the number of the anisotropic layers, under the low mode frequency, the effect of fibrous orientation angles of the anisotropic layers far away from the center damping layer on the loss factor of the thin plates became more otvious. But under the high mode frequency, the effect of fibrous orientation angles of the anisotropic layers nearby the center damping layer on the loss factor of the thin plates became greater.

关 键 词：层合阻尼薄板 各向异性参数 损耗因子 模态频率 

分 类 号：TB535[理学—物理]