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Free Vibration Analysis of Functionally Graded Plates with Multiple Circular and Non-circular Cutouts
graded materials rectangular/skew/trapezoidal/circular plates
2011/8/5
Cutouts are inevitable in structures due to practical consideration. In order to investigate the free vibration of functionally graded plates with multiple circular and non-circular cutouts, finite el...
多维隔振装置自由振动方程及其解(Free Vibration Equation of a Multidimensional Vibration Isolation Device and Its Root)
隔振 动力学方程 机构
2009/8/11
通过多方位多层次结构组合实现多维隔振时,其结构复杂、难度大,因此提出以反向对称布置双直角Stewart机构及上、下平台组成多维隔振装置,利用一层结构实现多维隔振,建立了自由振动方程并进行求解。由解看出,该装置固有频率在5?Hz以下,振动衰减较快。使用该装置,仿真可实现沿坐标轴的3个移动和绕坐标轴的3个转动,加速度传递系数均小于1。依据所推导的公式,确定该装置的刚度系数、阻尼系数和结构尺寸,可将该装...
Studies on free vibration of FRP aircraft Instruments panel boards
Instruments panel FRP Natural Frequency Free Vibration, Resonance
2009/2/19
The paper deals with the experimental investigations done on free vibration characteristics of typical FRP aircraft instrument panel boards made of E-glass /Poly vinyl ester composite. Seventeen panel...
Free vibration Analysis of Curvilinear Quadrilateral Plates by the Differential Quadrature Method
differential quadrature method vibration analysis arbitrary quadrilateral plates
2010/10/22
A methodology for applying the differential quadrature (DQ) method to the free
vibration analysis of arbitrary quadrilateral plates is developed. In our approach, the
irregular physical domain is tr...