A coupled computational method for multi-solver, multi-domain transient problems in elastodynamics

Mulliken, J.S.; Rizos, Dimitris

doi:10.1016/j.soildyn.2011.10.004

Cited by 6 publications

(3 citation statements)

References 39 publications

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“…The BIRF is a time-varying function that is defined between any two points in a mechanical system. It represents the time history of the response of one of the two points due to a unit amplitude B-spline excitation applied to the other point [23,24,27,28]. The B-spline functions are piecewise smooth polynomials of order k and belong to a family of base functions used in data interpolation and approximation.…”

Section: Methods Of Damage Identificationmentioning

confidence: 99%

“…The B k n -spline polynomials are of degree k − 1 and have k − 2 continuous derivatives. While the BIRFs are computed efficiently in numerical models of physical systems [23,28,29], it is almost impossible to measure the BIRFs directly in physical systems due to the difficulty of accurately reproducing the B-spline loading on the physical system. The BIRF between two points of a mechanical system, however, can be extracted from vibration tests that acquire the time history record of a response, R, and excitation, f, at the two points.…”

Section: Methods Of Damage Identificationmentioning

confidence: 99%

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Drone-Based Vibration Monitoring and Assessment of Structures

et al. 2021

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This paper presents a novel method of procuring and processing data for the assessment of civil structures via vibration monitoring. This includes the development of a custom sensor package designed to minimize the size/weight while being fully self-sufficient (i.e., not relying on external power). The developed package is delivered to the structure utilizing a customized Unmanned Aircraft System (UAS), otherwise known as a drone. The sensor package features an electropermanent magnet for securing it to the civil structure while a second magnet is used to secure the package to the drone during flight. The novel B-Spline Impulse Response Function (BIRF) technique was utilized to extract the Dynamic Signature Response (DSR) from the data collected by the sensor package. Experimental results are presented to validate this method and show the feasibility of deploying the sensor package on structures and collecting data valuable for Structural Health Monitoring (SHM) data processing. The advantages and limitations of the proposed techniques are discussed, and recommendations for further developments are made.

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Section: Methods Of Damage Identificationmentioning

confidence: 99%

Section: Methods Of Damage Identificationmentioning

confidence: 99%

Drone-Based Vibration Monitoring and Assessment of Structures

et al. 2021

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“…For example, Batista de Paiva and Trondi [5] used a BEM formulation for solving capped and uncapped pile groups, representing each pile by a polynomial function. The combination of the two methods, well known as FEM/BEM approach [6][7][8], allows an accurate description of the near field (FEM model) and a reliable estimation of the far-field (BEM model). Researchers have also proposed the use of finite difference method (FDM) [9], the infinitesimal finite element cell method (CIFECM) [10] or the finite layer theory [11].…”

Section: Introductionmentioning

confidence: 99%