Mechanics of damping for fiber composite laminates including hygrothermal effects
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In this paper, an integrated mechanics theory was developed for the modeling of composite damping from the micromechanics to the laminate level, including the effect of temperature, moisture, and interply hysteretic damping.Abstract:
An integrated mechanics theory was developed for the modeling of composite damping from the micromechanics to the laminate level. Simplified, design oriented equations based on hysteretic damping are presented for on-axis plies, off-axis plies, and laminates including the effect of temperature, moisture, and interply hysteretic damping. The temperature rise within vibrating composite laminates resulting from strain energy dissipation is also modeled, and their coupled hygro-thermo-mechanical response is predicted. The method correlates well with reported damping measurements. Application examples illustrate the effect of various ply, laminate, and hygro-thermal parameters on the overall damping performance of composite laminates.read more
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Tidal turbine blade composites - A review on the effects of hygrothermal aging on the properties of CFRP
TL;DR: In this article, a review of the applicability of hygrothermal aging to the understanding of carbon fiber reinforced plastics (CFRP) composites in marine structures such as tidal turbine blades is presented.
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High-order layerwise mechanics and finite element for the damped dynamic characteristics of sandwich composite beams
TL;DR: In this paper, a high-order discrete-layer theory and a finite element are presented for predicting the damping of laminated composite sandwich beams, which involves quadratic and cubic terms for approximation of the inplane displacement in each discrete layer, while interlaminar shear stress continuity is imposed through the thickness.
Journal ArticleDOI
Effects of Interply Damping Layers on the Dynamic Characteristics of Composite Plates
TL;DR: In this paper, the effects of aspect ratio, damping layer thickness, and fiber volume ratio on static and dynamic characteristics of composite laminates are also investigated, in connection with a semianalytical method for predicting the modal damping in simply supported specialty composite plates.
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Multiobjective shape and material optimization of composite structures including damping
TL;DR: In this article, a multiobjective optimal design methodology is developed for lightweight, low-cost composite structures of improved dynamic performance, which may include minimization of damped resonance amplitudes (or maximization of modal damping), weight, and material cost.
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Analytical frequency response solution for composite plates embedding viscoelastic layers
TL;DR: In this paper, analytical damped free-vibration and frequency response solutions are obtained for the analysis of composite plates structures embedding viscoelastic layers on the basis of the principle of virtual displacement, layer-wise models related to linear up to fourth order variations of the unknown variables in the thickness direction are treated.
References
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Simplified composite micromechanics equations for hygral, thermal and mechanical properties
TL;DR: In this article, a unified set of composite micromechanics equations of simple form is summarized and described, which can be used to predict unidirectional composite (ply) geometric, mechanical, thermal and hygral properties using constituent material (fiber/matrix) properties.
Journal ArticleDOI
Effect of Fibre Orientation and Laminate Geometry on the Dynamic Properties of CFRP
Robert D. Adams,D.G.C. Bacon +1 more
TL;DR: Theoretical predictions have been made of the effect of fibre orienta tion and laminate geometry on the flexural and torsional damping and modulus of fiber reinforced composites as mentioned in this paper.
Journal ArticleDOI
Complex moduli of viscoelastic composites—II. Fiber reinforced materials
TL;DR: In this article, a correspondence principle is applied to derive expressions for effective complex moduli of fiber reinforced materials on the basis of expressions for elastic moduli, based on the correspondence principle established in a previous paper.
Journal ArticleDOI
The Damping and Dynamic Moduli of Symmetric Laminated Composite Beams—Theoretical and Experimental Results
R.G. Ni,Robert D. Adams +1 more
TL;DR: In this paper, a method for predicting the dynamic properties of laminated composite beams has been developed, which can be used to predict the structural and structural properties of composite beams, as well as their dynamic properties.
Journal ArticleDOI
Dynamic Mechanical Behavior of Fiber-Reinforced Composites: Measurement and Analysis:
Ronald F. Gibson,Robert Plunkett +1 more
TL;DR: In this paper, the internal damping and elastic stiffness of E-glass fiber-reinforced epoxy beams under flexural vibration was analyzed and experimental efforts were made to find the internal stiffness and damping.
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