View in EDS

Critical speed and frequency behavior of rotating joined FG-CNTRC conical-conical shells.

Saved in:
Bibliographic Details
Title: Critical speed and frequency behavior of rotating joined FG-CNTRC conical-conical shells.
Authors: Heidari-Soureshjani, Ali1,2 (AUTHOR), Talebitooti, Mostafa3 (AUTHOR), Pakravan, Isaac1,2 (AUTHOR), Talebitooti, Roohollah1,2 (AUTHOR) rtalebi@iust.ac.ir
Source: Engineering Structures. Sep2022, Vol. 266, pN.PAG-N.PAG. 1p.
Subjects: Equations of motion, Shear (Mechanics), Hamilton's principle function, Coriolis force, Speed, Centrifugal force
Abstract: • The system is modeled as two individual rotating FG-CNTRC conical shells which are merged by pursuing matching conditions at their interfaces. • Coriolis and centrifugal forces alongside with initial hoop tensions are taken into account to achieve rotation induced motion equations. • Bifurcation of frequencies due to the Coriolis effects is observed. • Augmentation of rotating speed could converge frequencies for different FG patterns. • Difference between backward and forward frequencies plunges as the circumferential mode number soars. This paper provides information on critical speed and frequency behavior of rotating joined functionally graded carbon nanotube reinforced (FG-CNTRC) conical-conical shells. Furthermore, frequency bifurcation as a consequence of rotational effects is investigated. The shell is assumed to be composed of an isotropic polymer matrix that is reinforced by uniformly or functionally distributions of carbon nanotubes (CNTs). The structure's kinematics originates from the first order shear deformation theory (FSDT). To derive spin-based motion equations, Coriolis and centrifugal forces together with initial hoop tensions are propounded through the Hamilton's principle. Moreover, matching and boundary conditions are ascertained to supplement the governing equations. To discretize the governing equations meridionally, the generalized differential quadrature (GDQ) technique is employed. After validity checking, some significant parameters like cones' angles, rotation speed, edge supports, CNT volume fractions and dispersion patterns that play effective roles on the critical speed and vibration characteristics are examined. It is revealed that by enhancing spinning speed, frequencies of different FG patterns converge. In addition, difference between backward and forward frequencies decreases as the circumferential mode number increases. [ABSTRACT FROM AUTHOR]
Copyright of Engineering Structures is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
FullText Text:
  Availability: 0
Header DbId: egs
DbLabel: Engineering Source
An: 158308752
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Critical speed and frequency behavior of rotating joined FG-CNTRC conical-conical shells.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Heidari-Soureshjani%2C+Ali%22">Heidari-Soureshjani, Ali</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Talebitooti%2C+Mostafa%22">Talebitooti, Mostafa</searchLink><relatesTo>3</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Pakravan%2C+Isaac%22">Pakravan, Isaac</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Talebitooti%2C+Roohollah%22">Talebitooti, Roohollah</searchLink><relatesTo>1,2</relatesTo> (AUTHOR)<i> rtalebi@iust.ac.ir</i>
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Engineering+Structures%22">Engineering Structures</searchLink>. Sep2022, Vol. 266, pN.PAG-N.PAG. 1p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Equations+of+motion%22">Equations of motion</searchLink><br /><searchLink fieldCode="DE" term="%22Shear+%28Mechanics%29%22">Shear (Mechanics)</searchLink><br /><searchLink fieldCode="DE" term="%22Hamilton's+principle+function%22">Hamilton's principle function</searchLink><br /><searchLink fieldCode="DE" term="%22Coriolis+force%22">Coriolis force</searchLink><br /><searchLink fieldCode="DE" term="%22Speed%22">Speed</searchLink><br /><searchLink fieldCode="DE" term="%22Centrifugal+force%22">Centrifugal force</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: • The system is modeled as two individual rotating FG-CNTRC conical shells which are merged by pursuing matching conditions at their interfaces. • Coriolis and centrifugal forces alongside with initial hoop tensions are taken into account to achieve rotation induced motion equations. • Bifurcation of frequencies due to the Coriolis effects is observed. • Augmentation of rotating speed could converge frequencies for different FG patterns. • Difference between backward and forward frequencies plunges as the circumferential mode number soars. This paper provides information on critical speed and frequency behavior of rotating joined functionally graded carbon nanotube reinforced (FG-CNTRC) conical-conical shells. Furthermore, frequency bifurcation as a consequence of rotational effects is investigated. The shell is assumed to be composed of an isotropic polymer matrix that is reinforced by uniformly or functionally distributions of carbon nanotubes (CNTs). The structure's kinematics originates from the first order shear deformation theory (FSDT). To derive spin-based motion equations, Coriolis and centrifugal forces together with initial hoop tensions are propounded through the Hamilton's principle. Moreover, matching and boundary conditions are ascertained to supplement the governing equations. To discretize the governing equations meridionally, the generalized differential quadrature (GDQ) technique is employed. After validity checking, some significant parameters like cones' angles, rotation speed, edge supports, CNT volume fractions and dispersion patterns that play effective roles on the critical speed and vibration characteristics are examined. It is revealed that by enhancing spinning speed, frequencies of different FG patterns converge. In addition, difference between backward and forward frequencies decreases as the circumferential mode number increases. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Engineering Structures is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=158308752
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1016/j.engstruct.2022.114508
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 1
        StartPage: N.PAG
    Subjects:
      – SubjectFull: Equations of motion
        Type: general
      – SubjectFull: Shear (Mechanics)
        Type: general
      – SubjectFull: Hamilton's principle function
        Type: general
      – SubjectFull: Coriolis force
        Type: general
      – SubjectFull: Speed
        Type: general
      – SubjectFull: Centrifugal force
        Type: general
    Titles:
      – TitleFull: Critical speed and frequency behavior of rotating joined FG-CNTRC conical-conical shells.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Heidari-Soureshjani, Ali
      – PersonEntity:
          Name:
            NameFull: Talebitooti, Mostafa
      – PersonEntity:
          Name:
            NameFull: Pakravan, Isaac
      – PersonEntity:
          Name:
            NameFull: Talebitooti, Roohollah
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 09
              Text: Sep2022
              Type: published
              Y: 2022
          Identifiers:
            – Type: issn-print
              Value: 01410296
          Numbering:
            – Type: volume
              Value: 266
          Titles:
            – TitleFull: Engineering Structures
              Type: main
ResultId 1