Searched for: author%3A%22Cicirello%2C+A.%22
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Lathourakis, C.L. (author), Cicirello, A. (author)
A method is introduced for the identification of the nonlinear governing equations of dynamical systems in the presence of discontinuous and nonsmooth nonlinear forces, such as the ones generated by frictional contacts, based on noisy measurements. The so-called Physics Encoded Sparse Identification of Nonlinear Dynamics (PhI-SINDy) builds...
journal article 2024
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Lye, Adolphus (author), Marino, Luca (author), Cicirello, A. (author), Patelli, Edoardo (author)
Several on-line identification approaches have been proposed to identify parameters and evolution models of engineering systems and structures when sequential datasets are available via Bayesian inference. In this work, a robust and “tune-free” sampler is proposed to extend one of the sequential Monte Carlo implementations for the identification...
journal article 2023
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Marino, Luca (author), Cicirello, A. (author)
An approach for the identification of discontinuous and nonsmooth nonlinear forces, as those generated by frictional contacts, in mechanical systems that can be approximated by a single-degree-of-freedom model is presented. To handle the sharp variations and multiple motion regimes introduced by these nonlinearities in the dynamic response, the...
journal article 2023
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Igea, Felipe (author), Cicirello, A. (author)
Multi-modal distributions of some physics-based model parameters are often encountered in engineering due to different situations such as a change in some environmental conditions, and the presence of some types of damage and non-linearity. In statistical model updating, for locally identifiable parameters, it can be anticipated that multi...
journal article 2023
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Zhong, Shaohong (author), Scarinci, Andrea (author), Cicirello, A. (author)
The design of complex engineering systems is an often long and articulated process that highly relies on engineers’ expertise and professional judgment. As such, the typical pitfalls of activities involving the human factor often manifest themselves in terms of lack of completeness or exhaustiveness of the analysis, inconsistencies across...
journal article 2023
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Zou, Joanna (author), Lourens, E. (author), Cicirello, A. (author)
Virtual sensing techniques have gained traction in applications to the structural health monitoring of monopile-based offshore wind turbines, as the strain response below the mudline, which is a primary indicator of fatigue damage accumulation, is impractical to measure directly with physical instrumentation. The Gaussian process latent force...
journal article 2023
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Wu, Jun (author), Miller, Thomas E. (author), Cicirello, A. (author), Mortimer, Beth (author)
Often overlooked, vibration transmission through the entire body of an animal is an important factor in understanding vibration sensing in animals. To investigate the role of dynamic properties and vibration transmission through the body, we used a modal test and lumped parameter modelling for a spider. The modal test used laser vibrometry...
journal article 2023
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Lathourakis, C.L. (author), Andriotis, C. (author), Cicirello, A. (author)
A key computational challenge in maintenance planning for deteriorating structures is to concurrently secure (i) optimality of decisions over long planning horizons, and (ii) accuracy of realtime parameter updates in high-dimensional stochastic spaces. Both are often encumbered by the presence of discretized continuous-state models that describe...
conference paper 2023
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Koune, I.C. (author), Rózsás, Árpád (author), Slobbe, Arthur (author), Cicirello, A. (author)
The decreasing cost and improved sensor and monitoring system technology (e.g., fiber optics and strain gauges) have led to more measurements in close proximity to each other. When using such spatially dense measurement data in Bayesian system identification strategies, the correlation in the model prediction error can become significant. The...
journal article 2023
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Mahajan, Saurabh (author), Cicirello, A. (author)
The friction force at joints of engineering structures is usually unknown and not directly identifiable. This contribution explores a procedure for obtaining the governing equation of motion and correctly identifying the unknown Coulomb friction force of a mass-springdashpot system. In particular, a single degree-of-freedom system is...
journal article 2023
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Oncescu, Andreea Maria (author), Cicirello, A. (author)
A self-supervised classification algorithm is proposed for detecting and isolating sensor faults of health monitoring devices. This is achieved by automatically extracting information from failure investigations. This approach uses (i) failure reports for extracting comprehensive failure labels; (ii) recorded data of a faulty monitoring...
conference paper 2023
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Yuan, Jie (author), Denimal, Enora (author), Bi, Sifeng (author), Feng, Jinglang (author), Hu, Quan (author), Cicirello, A. (author)
contribution to periodical 2023
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Lye, Adolphus (author), Cicirello, A. (author), Patelli, Edoardo (author)
Bayesian inference is a popular approach towards parameter identification in engineering problems. Such technique would involve iterative sampling methods which are often robust. However, these sampling methods often require significant computational resources and also the tuning of a large number of parameters. This motivates the development...
journal article 2022
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Cicirello, A. (author), Giunta, F. (author)
Two non-intrusive uncertainty propagation approaches are proposed for the performance analysis of engineering systems described by expensive-to-evaluate deterministic computer models with parameters defined as interval variables. These approaches employ a machine learning based optimization strategy, the so-called Bayesian optimization, for...
journal article 2022
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Igea, Felipe (author), Chatzis, Manolis N. (author), Cicirello, A. (author)
An approach is proposed for the evaluation of the probability density functions (PDFs) of the modal parameters for an ensemble of nominally identical structures when there is only access to a single structure and the dispersion parameter is known. The approach combines the Eigensystem realization algorithm on sets of dynamic data, with an...
journal article 2022
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Zou, J. (author), Cicirello, A. (author), Iliopoulos, Alexandros (author), Lourens, E. (author)
Fatigue assessment in offshore wind turbine support structures requires the monitoring of strains below the mudline, where the highest bending moments occur. However, direct measurement of these strains is generally impractical. This paper presents the validation of a virtual sensing technique based on the Gaussian process latent force model...
conference paper 2022
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Cabboi, A. (author), Marino, Luca (author), Cicirello, A. (author)
This study aims at assessing the predictive performance of the Amontons–Coulomb law to reliably predict the cyclic response, inclusive of stick–slip, of a single degree of freedom system in contact with the ground through two versions (steady-state and rate-and-state) of a regularized Dieterich–Ruina law. The assessment is carried out by...
journal article 2022
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Marino, Luca (author), Cicirello, A. (author)
This paper aims at assessing the effect of dry friction on the dynamic behaviour of a damped mechanical system subject to harmonic forcing. Previous work on friction damped systems highlighted that not including other forms of damping in the dynamic analysis can lead to unrealistic results such as the presence of infinite resonances. In this...
journal article 2022
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Lye, Adolphus (author), Cicirello, A. (author), Patelli, Edoardo (author)
This tutorial paper reviews the use of advanced Monte Carlo sampling methods in the context of Bayesian model updating for engineering applications. Markov Chain Monte Carlo, Transitional Markov Chain Monte Carlo, and Sequential Monte Carlo methods are introduced, applied to different case studies and finally their performance is compared....
journal article 2021
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Marino, Luca (author), Cicirello, A. (author)
This paper proposes an approach for the determination of the analytical boundaries of continuous, stick-slip and no motion regimes for the steady-state response of a multi-degree-of-freedom (MDOF) system with a single Coulomb contact to harmonic excitation. While these boundaries have been previously investigated for single-degree-of-freedom ...
journal article 2021
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