Three-dimensional vibration analysis of sandwich and multilayered plates with general ply stacking sequences by a spectral-sampling surface method

2017 ◽  
Vol 176 ◽  
pp. 1124-1142 ◽  
Author(s):  
Tiangui Ye ◽  
Guoyong Jin ◽  
Zhu Su
Keyword(s):  
Vibration Analysis ◽  
Three Dimensional ◽  
Surface Method ◽  
Multilayered Plates ◽  
Spectral Sampling

scholarly journals Optimization of Polymer Extrusion Die Based on Response Surface Method

Processes ◽  
2020 ◽  
Vol 8 (9) ◽  
pp. 1043 ◽  
Author(s):  
Amin Razeghiyadaki ◽  
Dichuan Zhang ◽  
Dongming Wei ◽  
Asma Perveen
Keyword(s):  
Three Dimensional ◽  
Theoretical Work ◽  
Optimization Method ◽  
Extrusion Die ◽  
Surface Method ◽  
Spline Fitting ◽  
Die Profile ◽  
Response Optimization ◽  
Geometric Variables ◽  
Volume Method

A coupled surface response optimization method with a three-dimensional finite volume method is adopted in this study to identify five independent geometric variables of the die interior that provides a design with the lowest velocity variance at the exit of the coat-hanger extrusion die. Two of these five geometric variables represent the manifold dimension while the other three variables represent the die profile. In this method, B-spline fitting with four points was used to represent the die profile. A comparison of the optimized die obtained in our study and the die with a geometry derived by a previous theoretical work shows a 20.07% improvement in the velocity distribution at the exit of the die.

Three Dimensional Crankshaft Vibration Analysis Including Gyroscopic Effect

1994 ◽  
Author(s):  
Chang-Seok Han ◽  
Kang-Woo Lee ◽  
Don-Boo Cho ◽  
Young-Jin Cheon ◽  
Seung-Dong Yeo
Keyword(s):  
Vibration Analysis ◽  
Three Dimensional ◽  
Gyroscopic Effect

scholarly journals Three-dimensional Cauchy-condition surface method to identify the shape of the last closed magnetic surface in the Large Helical Device

2011 ◽  
Vol 53 (10) ◽  
pp. 105007 ◽  
Author(s):  
Masafumi Itagaki ◽  
Tadaaki Maeda ◽  
Takeshi Ishimaru ◽  
Gaku Okubo ◽  
Kiyomasa Watanabe ◽  
...  
Keyword(s):  
Three Dimensional ◽  
Magnetic Surface ◽  
Surface Method

A semi-analytical three-dimensional free vibration analysis of functionally graded curved panels integrated with piezoelectric layers

2014 ◽  
Vol 21 (4) ◽  
pp. 571-587 ◽  
Author(s):  
Hamid Reza Saeidi Marzangoo ◽  
Mostafa Jalal
Keyword(s):  
Boundary Conditions ◽  
Vibration Analysis ◽  
Natural Frequencies ◽  
Differential Quadrature Method ◽  
Three Dimensional ◽  
Free Vibration Analysis ◽  
Functionally Graded ◽  
Simply Supported ◽  
Piezoelectric Layers ◽  
Curved Panels

AbstractFree vibration analysis of functionally graded (FG) curved panels integrated with piezoelectric layers under various boundary conditions is studied. A panel with two opposite edges is simply supported, and arbitrary boundary conditions at the other edges are considered. Two different models of material property variations based on the power law distribution in terms of the volume fractions of the constituents and the exponential law distribution of the material properties through the thickness are considered. Based on the three-dimensional theory of elasticity, an approach combining the state space method and the differential quadrature method (DQM) is used. For the simply supported boundary conditions, closed-form solution is given by making use of the Fourier series expansion, and applying the differential quadrature method to the state space formulations along the axial direction, new state equations about state variables at discrete points are obtained for the other cases such as clamped or free-end conditions. Natural frequencies of the hybrid curved panels are presented by solving the eigenfrequency equation, which can be obtained by using edges boundary conditions in this state equation. The results obtained for only FGM shell is verified by comparing the natural frequencies with the results obtained in the literature.

Mid-frequency structural acoustic and vibration analysis in arbitrary, curved three-dimensional domains

2001 ◽  
Vol 79 (6) ◽  
pp. 617-629 ◽  
Author(s):  
Saikat Dey ◽  
Joseph J. Shirron ◽  
Luise S. Couchman
Keyword(s):  
Vibration Analysis ◽  
Three Dimensional
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