Mitigation of ice loading

Feasibility study of semi-active solution

Arkadiusz Mroz, Tuomo Kärnä

Research output: Book/ReportReportProfessional

Abstract

Conical structures are commonly used in order to mitigate the ice loading on off shore structures. However a need for further mitigation of the structure response is recognised. This report introduces a new, semi-active solution aiming at mitigation of ice forces acting on off shore towers. New interface between the cone and tower is introduced. So-far-used rigid connection is replaced with compliant connection using adaptive springs and dampers. Adaptation procedure is introduced in order to optimise the effect. The solution aims at decreasing of the horizontal component of ice loading and does not affect the period of excitation. The feasibility study of new solution effectiveness is performed. Simulations are done using ABAQUS/Standard software.
Original languageEnglish
Place of PublicationEspoo
PublisherVTT Technical Research Centre of Finland
Number of pages35
ISBN (Electronic)951-38-6591-6
Publication statusPublished - 2005
MoE publication typeNot Eligible

Publication series

NameVTT Working Papers
PublisherVTT
No.39
ISSN (Electronic)1459-7683

Fingerprint

feasibility study
mitigation
ice
offshore structure
software
simulation

Keywords

  • ice loading
  • conical structures
  • semi-active control
  • off-shore structures
  • simulation
  • wind turbine structures
  • towers
  • cone structure
  • vibrations
  • fatique control

Cite this

Mroz, A., & Kärnä, T. (2005). Mitigation of ice loading: Feasibility study of semi-active solution. Espoo: VTT Technical Research Centre of Finland. VTT Working Papers, No. 39
Mroz, Arkadiusz ; Kärnä, Tuomo. / Mitigation of ice loading : Feasibility study of semi-active solution. Espoo : VTT Technical Research Centre of Finland, 2005. 35 p. (VTT Working Papers; No. 39).
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abstract = "Conical structures are commonly used in order to mitigate the ice loading on off shore structures. However a need for further mitigation of the structure response is recognised. This report introduces a new, semi-active solution aiming at mitigation of ice forces acting on off shore towers. New interface between the cone and tower is introduced. So-far-used rigid connection is replaced with compliant connection using adaptive springs and dampers. Adaptation procedure is introduced in order to optimise the effect. The solution aims at decreasing of the horizontal component of ice loading and does not affect the period of excitation. The feasibility study of new solution effectiveness is performed. Simulations are done using ABAQUS/Standard software.",
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author = "Arkadiusz Mroz and Tuomo K{\"a}rn{\"a}",
note = "Project code: R3SU00222",
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Mroz, A & Kärnä, T 2005, Mitigation of ice loading: Feasibility study of semi-active solution. VTT Working Papers, no. 39, VTT Technical Research Centre of Finland, Espoo.

Mitigation of ice loading : Feasibility study of semi-active solution. / Mroz, Arkadiusz; Kärnä, Tuomo.

Espoo : VTT Technical Research Centre of Finland, 2005. 35 p. (VTT Working Papers; No. 39).

Research output: Book/ReportReportProfessional

TY - BOOK

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T2 - Feasibility study of semi-active solution

AU - Mroz, Arkadiusz

AU - Kärnä, Tuomo

N1 - Project code: R3SU00222

PY - 2005

Y1 - 2005

N2 - Conical structures are commonly used in order to mitigate the ice loading on off shore structures. However a need for further mitigation of the structure response is recognised. This report introduces a new, semi-active solution aiming at mitigation of ice forces acting on off shore towers. New interface between the cone and tower is introduced. So-far-used rigid connection is replaced with compliant connection using adaptive springs and dampers. Adaptation procedure is introduced in order to optimise the effect. The solution aims at decreasing of the horizontal component of ice loading and does not affect the period of excitation. The feasibility study of new solution effectiveness is performed. Simulations are done using ABAQUS/Standard software.

AB - Conical structures are commonly used in order to mitigate the ice loading on off shore structures. However a need for further mitigation of the structure response is recognised. This report introduces a new, semi-active solution aiming at mitigation of ice forces acting on off shore towers. New interface between the cone and tower is introduced. So-far-used rigid connection is replaced with compliant connection using adaptive springs and dampers. Adaptation procedure is introduced in order to optimise the effect. The solution aims at decreasing of the horizontal component of ice loading and does not affect the period of excitation. The feasibility study of new solution effectiveness is performed. Simulations are done using ABAQUS/Standard software.

KW - ice loading

KW - conical structures

KW - semi-active control

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KW - simulation

KW - wind turbine structures

KW - towers

KW - cone structure

KW - vibrations

KW - fatique control

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Mroz A, Kärnä T. Mitigation of ice loading: Feasibility study of semi-active solution. Espoo: VTT Technical Research Centre of Finland, 2005. 35 p. (VTT Working Papers; No. 39).