1 edition of Vibration response of constrained viscoelastically damped plates found in the catalog.
Vibration response of constrained viscoelastically damped plates
Gerald J. Maurer
Written in English
|Contributions||Shin, Y. S.|
|The Physical Object|
|Number of Pages||63|
A Finite Element Analysis of the Harmonic Response of Damped Three-layer Plates, Journal of Sound and Vibration, 67(2): Analysis of Flexural Vibration of Viscoelastically Damped Sandwich Plates, Journal of Sound and Vibration On the sound transmission loss of finite plates with constrained visco Crossref Show details. SAGE Video. A spectrum analyzer calculated frequency response functions (FRFs) between the accelerometer inputs and the vibrometer outputs. Measured FRFs of the base beam and the constraining layer were compared to detect thickness deformation. Experimental results showed that direct measurements can detect thickness deformation as low as percent.
This paper investigates the vibration and optimal design of a rotating constrained layer damped plate system. Most of the existing researches treat the plate structures as beams. This work. Optimum distribution of viscoelastic materials of damped sandwich plate composite for suppressing plate vibration is investigated. A solid isotropic material with penalization model is described based on the proposed interface finite element of viscoelastic layer. The objective function is chosen as maximization of the modal loss factor.
The classical methods of surface damping of bending vibrations of thin-walled structures and a promising integrated version with a damping coating consisting of two layers of a material with pronounced viscoelastic properties and an intermediate thin reinforcing layer of a high-modulus material are discussed. A four-layer finite element for an elongate plate with an . (). OPTIMUM DESIGN OF VISCOELASTICALLY DAMPED SANDWICH PANELS. Engineering Optimization: Vol. 6, No. 4, pp.
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Direct frequency response analyses of the constrained viscoelastically damped flat plates were performed with modifications to account for the frequency-dependent properties of viscoelastic materials (i.e., loss factors and shear modulus).
The modal strain energy method was also applied to each plate to compute the same type of by: Finite Elements in Analysis and Design 7 () Elsevier Vibration response of constrained viscoelastically damped plates: Analysis and experiments Y.S. Shin and G.J. Maurer Department of Mechanical Engineering Naoal Postgraduate School, Monterey, CAUSA Revised June by: In an earlier work, a numerical method based on a finite element approach was proposed by the present authors to predict the acoustic and vibration response of viscoelastically damped sandwich plates.
This method was based on a finite element formulation for the sandwich plate, coupled to a boundary element method to account for fluid Cited by: Abstract. Approved for public release; distribution is unlimitedThe frequency response analysis of several constrained viscoelastically damped plates were performed with modifications to account for the frequency dependent properties of viscoelastic materials (loss factors and shear modulus) using MSC/: Gerald J.
Maurer. Piezo-viscoelastically damped nonlinear frequency response of functionally graded plates with a heated plate-surface Aravinda Kumar MS, Satyajit Panda, and Debabrata Chakraborty Journal of Vibration and Control 2, Cited by: 9. Journal of Sound and Vibration () 85(3), SHOCK RESPONSE OF VISCOELASTICALLY DAMPED SANDWICH PLATES A.
GROVER AND A. KAPUR Department of Mechanical Engineering, Punjab Engineering College, Chandigarh, India (Received 30 Novemberand in revised form 3 March ) Analysis for the transient response of a simply supported three layer viscoelastically damped sandwich plate.
Vibration Analysis of Viscoelastically Damped Sandwich Shells Article (PDF Available) in Shock and Vibration 3(6) January with 31 Reads How we measure 'reads'. Passive constrained layer damping (PCLD) is nowadays a general method for reducing vibrations.
Constrained layer damping (CLD) is a very good technology in terms of reducing vibration energy. This paper deals with optimal damping of first three modes of a thin square cantilever plate by constrained viscoelastic layers which are positioned according to the. Dynamic transient responses of plates with viscoelastic free damping layers are studied in order to evaluate free layer damping treatment performances.
The effects of forcing frequencies and temperatures on free-layer viscoelastic damping treatment of plates are investigated analytically. The vibroacoustics of a plate covered by a free or a constrained viscoelastic layer is analyzed in this article.
These assumptions are inspired from Ungar's work on viscoelastically damped beam. very precise experiment set up allows the measurement of the vibration response of two sandwich plates that reveal the precision of the. Modal properties of viscoelastically damped plates that were clamped at the edges between sandwich rectangular frames were obtained by FEM analysis and modal strain energy analysis.
The modal damping loss factors were calculated at various temperatures using the reduced‐temperature nomogram of the applied damping material obtained from the. In this study, a numerical tool is presented to analyze the vibration response of plates partially or fully covered with a constrained viscoelastic damping material.
This tool is based on a finite. The nonlinear, forced, damped vibrations of simply-supported rectangular sandwich plates with a viscoelastic core are studied. The general, nonlinear dynamic equations of asymmetrical sandwich plates are derived using the virtual work principle.
Damping is taken into account by modelling the viscoelastic core as a Voigt-Kelvin solid. The harmonic balance method is. A finite element analysis of viscoelastically damped sandwich plates Journal of Sound and Vibration, Vol.No.
1 Micromechanical modeling of material damping in discontinuous fiber three-phase polymer composites. Nonlinear vibration of fractional viscoelastic plate: Primary, subharmonic, and superharmonic response International Journal of Non-Linear Mechanics, Vol.
99 A State Space Viscoelastic Shaft Finite Element for Stability and Response Analysis of Rotors with Structural and Frequency Dependent Damping.
The constrained layer damping treat (). Flexural vibration of damped sand wich plates was also analyzed in Lu et al. of viscoelastically damped sandwich plates and. Vibration response of constrained viscoelastically damped plates: Analysis and experiments Finite Elements in Analysis and Design, Vol.
7, No. 4 Dynamic Finite Element Analysis of Viscoelastically Damped Composite Structures. Normal deformation of the core material plays an important role when the thickness ratio of constraining layer to base layer is and its Poisson’s ratio is smaller thanand hence need to be included in the dynamic modeling especially for estimation of modal damping when one of the following conditions are met; 1) the ratio of base.
Response of Thick Structures Damped by Viscoelastic Material with Application to Layered Beams and Plates,” Machine Tools with Imbedded Viscoelastic Materials Constrained by Shear Tubes,” Proc.
ASME 15th Biennial Conf. on Vibration and Noise, Boston, MA, Damping Additions for Plates Using Constrained Layer Viscoelastic Layers,”. Abstract—Vibration reduction is very important in machines and structures.
Various methods are used for vibration reduction. In this report, constrained layer damping (CLD) method is studied for vibration reduction. Constrained layer damping plate consists of base plate, viscoelastic material (VEM) and constraining layer.
E Ioannides, P Grootenhuis, A Finite Element Analysis of the Harmonic Response of Damped Five-Layer Plates, Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science, /PIME_PROC____02,4, ().
An amplitude equation for the non-linear vibration of viscoelastically damped sandwich beams Journal of Sound and Vibration, Vol.No. Finite element dynamic analysis of orthotropic cylindrical shells with a constrained damping layer.vibration analysis, classification of vibration and elements of vibrating systems are discussed.
The free vibration analysis of single degree of freedom of undamped translational and torsional systems, the concept of damping in mechanical systems, including viscous, structural, and Coulomb damping, the response to harmonic excitations are.