Journal ArticleDOI
Inverse identification of the frequency-dependent mechanical parameters of viscoelastic materials based on the measured FRFs
TLDR
Based on the measured resonance frequencies and frequency response functions (FRFs) of a viscoelastic damping plate, an inverse approach was developed to identify the aforementioned parameters with frequency-dependent characteristic as discussed by the authors.About:
This article is published in Mechanical Systems and Signal Processing.The article was published on 2018-01-01. It has received 35 citations till now. The article focuses on the topics: Dynamic modulus & Viscoelasticity.read more
Citations
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Characterisation of Viscoelastic Layers in Sandwich Panels via an Inverse Technique
TL;DR: In this article, a new inverse technique to characterise the nonlinear mechanical properties of viscoelastic core layers in sandwich panels has been developed based on simple vibration tests, which allows one to preserve the frequency and temperature dependences of the storage and loss moduli of VMs for a wide range of frequencies and to perform a structural analysis using high damping tests.
Journal ArticleDOI
An identification method for frequency dependent material properties of viscoelastic sandwich structures
TL;DR: In this article, an inverse identification method of the viscoelastic material properties (shear modulus G 0 and loss factor η C ) of a symmetric three-layered VE beam is proposed.
Journal ArticleDOI
Development of a prediction method of Rayleigh damping coefficients for free layer damping coatings through machine learning algorithms
TL;DR: In this paper, the authors developed a methodology that helps to define damping parameters of such viscoelastic coating layers through Rayleigh damping coefficients and used machine learning tools to find a prediction formula which yields Rayleigh coefficients based on thicknesses.
Journal ArticleDOI
Identification of frequency-dependent viscoelastic damped structures using an adjoint method
TL;DR: In this paper, an adjoint-based gradient method is developed to minimize the quadratic error between the finite element model and the experimental modal data (frequencies and loss factors).
Journal ArticleDOI
Optimization of Hoop Layouts for Reducing Vibration Amplitude of Pipeline System Using the Semi-Analytical Model and Genetic Algorithm
Xudong Liu,Wei Sun,Zhihui Gao +2 more
TL;DR: In this article, a single pipeline system with multi-hoop supports was taken as the object and a method based on genetic algorithm to realize the layout of hoops and effectively reduce the resonance amplitude of pipeline system was proposed.
References
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Optimization by Simulated Annealing
TL;DR: There is a deep and useful connection between statistical mechanics and multivariate or combinatorial optimization (finding the minimum of a given function depending on many parameters), and a detailed analogy with annealing in solids provides a framework for optimization of very large and complex systems.
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Genetic Algorithms and Machine Learning
TL;DR: There is no a priori reason why machine learning must borrow from nature, but many machine learning systems now borrow heavily from current thinking in cognitive science, and rekindled interest in neural networks and connectionism is evidence of serious mechanistic and philosophical currents running through the field.
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Distributed Optimization by Ant Colonies
TL;DR: A distributed problem solving environment is introduced and its use to search for a solution to the travelling salesman problem is proposed.
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The sensitivity method in finite element model updating: A tutorial
TL;DR: A basic introduction to the most important procedures of computational model updating is provided, including tutorial examples to reinforce the reader’s understanding and a large scale model updating example of a helicopter airframe.
Journal ArticleDOI
Fractional calculus in the transient analysis of viscoelastically damped structures
Ronald L. Bagley,Peter J. Torvik +1 more
TL;DR: In this article, the authors used fractional calculus to model the viscoelastic behavior of a damping layer in a simply supported beam and analyzed the beam by using both a continuum formulation and a finite element formulation to predict the transient response to a step loading.