Wave Motion and Stop-Bands in Pipes with Helical Characteristics Using Wave Finite Element Analysis

Pipes are widely used in many industrial and mechanical applications and devices. Although there are many different constructions according to the specific application and device, these can show helical pattern, such as spiral pipes, wire-reinforced pipes/shells, spring-suspension, and so on. Theore...

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Main Authors: Elisabetta Manconi, Sergey Sorokin, Rinaldo Garziera, Alf Soe-Knudsen
Format: Article
Language:English
Published: Shahid Chamran University of Ahvaz 2018-11-01
Series:Journal of Applied and Computational Mechanics
Subjects:
Online Access:http://jacm.scu.ac.ir/article_13555_735b8e957892a331bb633de8b462dbfc.pdf
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author Elisabetta Manconi
Sergey Sorokin
Rinaldo Garziera
Alf Soe-Knudsen
author_facet Elisabetta Manconi
Sergey Sorokin
Rinaldo Garziera
Alf Soe-Knudsen
author_sort Elisabetta Manconi
collection DOAJ
description Pipes are widely used in many industrial and mechanical applications and devices. Although there are many different constructions according to the specific application and device, these can show helical pattern, such as spiral pipes, wire-reinforced pipes/shells, spring-suspension, and so on. Theoretical modelling of wave propagation provides a prediction about the dynamic behavior, and it is fundamental in the design process of these structures/devices and in structural health monitoring techniques. However, standard approaches have limitations in terms of difficulties in modelling and impossible computational cost at higher frequencies. In this study, the wave characteristics in waveguides with helical patterns are obtained using a Wave Finite Element (WFE) method. The method is described for a 1D and 2D waveguide with helical properties and it is illustrated by numerical examples. These include the optimization of stop-bands for a fluid-filled pipe with concentrated masses and a cylindrical structure with helical orthotropy.
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spelling doaj.art-a5770707ca4a4dee949c7739f894c1b42022-12-22T00:55:58ZengShahid Chamran University of AhvazJournal of Applied and Computational Mechanics2383-45362383-45362018-11-014Special Issue: Applied and Computational Issues in Structural Engineering42042810.22055/jacm.2018.24930.121813555Wave Motion and Stop-Bands in Pipes with Helical Characteristics Using Wave Finite Element AnalysisElisabetta Manconi0Sergey Sorokin1Rinaldo Garziera2Alf Soe-Knudsen3Dipartimento di Ingegneria e Architettura, Universita degli Studi di Parma, Viale delle Scienze 181/A, 43100 Parma, ItalyDepartment of Materials and Production, Aalborg University, Fibigerstraede 16, DK-9220 Aalborg East, DenmarkDipartimento di Ingegneria e Architettura, Universita degli Studi di Parma, Viale delle Scienze 181/A, 43100 Parma, ItalyVestas Wind Systems A/S, Hedeager 42, DK-8200 Aarhus North, DenmarkPipes are widely used in many industrial and mechanical applications and devices. Although there are many different constructions according to the specific application and device, these can show helical pattern, such as spiral pipes, wire-reinforced pipes/shells, spring-suspension, and so on. Theoretical modelling of wave propagation provides a prediction about the dynamic behavior, and it is fundamental in the design process of these structures/devices and in structural health monitoring techniques. However, standard approaches have limitations in terms of difficulties in modelling and impossible computational cost at higher frequencies. In this study, the wave characteristics in waveguides with helical patterns are obtained using a Wave Finite Element (WFE) method. The method is described for a 1D and 2D waveguide with helical properties and it is illustrated by numerical examples. These include the optimization of stop-bands for a fluid-filled pipe with concentrated masses and a cylindrical structure with helical orthotropy.http://jacm.scu.ac.ir/article_13555_735b8e957892a331bb633de8b462dbfc.pdfWave propagationDispersion curvesHelical structuresStop-bandsPipes
spellingShingle Elisabetta Manconi
Sergey Sorokin
Rinaldo Garziera
Alf Soe-Knudsen
Wave Motion and Stop-Bands in Pipes with Helical Characteristics Using Wave Finite Element Analysis
Journal of Applied and Computational Mechanics
Wave propagation
Dispersion curves
Helical structures
Stop-bands
Pipes
title Wave Motion and Stop-Bands in Pipes with Helical Characteristics Using Wave Finite Element Analysis
title_full Wave Motion and Stop-Bands in Pipes with Helical Characteristics Using Wave Finite Element Analysis
title_fullStr Wave Motion and Stop-Bands in Pipes with Helical Characteristics Using Wave Finite Element Analysis
title_full_unstemmed Wave Motion and Stop-Bands in Pipes with Helical Characteristics Using Wave Finite Element Analysis
title_short Wave Motion and Stop-Bands in Pipes with Helical Characteristics Using Wave Finite Element Analysis
title_sort wave motion and stop bands in pipes with helical characteristics using wave finite element analysis
topic Wave propagation
Dispersion curves
Helical structures
Stop-bands
Pipes
url http://jacm.scu.ac.ir/article_13555_735b8e957892a331bb633de8b462dbfc.pdf
work_keys_str_mv AT elisabettamanconi wavemotionandstopbandsinpipeswithhelicalcharacteristicsusingwavefiniteelementanalysis
AT sergeysorokin wavemotionandstopbandsinpipeswithhelicalcharacteristicsusingwavefiniteelementanalysis
AT rinaldogarziera wavemotionandstopbandsinpipeswithhelicalcharacteristicsusingwavefiniteelementanalysis
AT alfsoeknudsen wavemotionandstopbandsinpipeswithhelicalcharacteristicsusingwavefiniteelementanalysis