A random ice force model for narrow conical structures

Qu Yan (Corresponding Author), Yue Qianjin, Bi Xiangjun, Tuomo Kärnä

Research output: Contribution to journalArticleScientificpeer-review

60 Citations (Scopus)

Abstract

This paper describes a time-varying random ice force model for narrow conical structures. The model concerns a situation where a uniform ice sheet acts on a narrow cone and fails by bending in a mode where the broken ice pieces are cleared away. The ice force is simplified as a series of impulses with random magnitudes and periods, which are based on a statistical analysis of the load panel data obtained in full scale tests. It was found that normal distributions can be used as approximations to the statistical characteristics of the force amplitudes and periods. This paper addresses the determination of the distribution parameters. The random ice load function that is derived in this paper can be used in the dynamic analysis of compliant offshore structures with narrow ice breaking cones that are subjected to ice actions. Further limitations are discussed in the paper.
Original languageEnglish
Pages (from-to)148-157
JournalCold Regions Science and Technology
Volume45
Issue number3
DOIs
Publication statusPublished - 2006
MoE publication typeA1 Journal article-refereed

Fingerprint

Ice
ice
Cones
offshore structure
panel data
dynamic analysis
Offshore structures
Normal distribution
ice sheet
statistical analysis
Dynamic analysis
Statistical methods
distribution

Keywords

  • Oil platform
  • Ice induced vibration
  • Ice force model
  • Conical structures
  • Compliant structures

Cite this

Yan, Qu ; Qianjin, Yue ; Xiangjun, Bi ; Kärnä, Tuomo. / A random ice force model for narrow conical structures. In: Cold Regions Science and Technology. 2006 ; Vol. 45, No. 3. pp. 148-157.
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A random ice force model for narrow conical structures. / Yan, Qu (Corresponding Author); Qianjin, Yue; Xiangjun, Bi; Kärnä, Tuomo.

In: Cold Regions Science and Technology, Vol. 45, No. 3, 2006, p. 148-157.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - A random ice force model for narrow conical structures

AU - Yan, Qu

AU - Qianjin, Yue

AU - Xiangjun, Bi

AU - Kärnä, Tuomo

PY - 2006

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N2 - This paper describes a time-varying random ice force model for narrow conical structures. The model concerns a situation where a uniform ice sheet acts on a narrow cone and fails by bending in a mode where the broken ice pieces are cleared away. The ice force is simplified as a series of impulses with random magnitudes and periods, which are based on a statistical analysis of the load panel data obtained in full scale tests. It was found that normal distributions can be used as approximations to the statistical characteristics of the force amplitudes and periods. This paper addresses the determination of the distribution parameters. The random ice load function that is derived in this paper can be used in the dynamic analysis of compliant offshore structures with narrow ice breaking cones that are subjected to ice actions. Further limitations are discussed in the paper.

AB - This paper describes a time-varying random ice force model for narrow conical structures. The model concerns a situation where a uniform ice sheet acts on a narrow cone and fails by bending in a mode where the broken ice pieces are cleared away. The ice force is simplified as a series of impulses with random magnitudes and periods, which are based on a statistical analysis of the load panel data obtained in full scale tests. It was found that normal distributions can be used as approximations to the statistical characteristics of the force amplitudes and periods. This paper addresses the determination of the distribution parameters. The random ice load function that is derived in this paper can be used in the dynamic analysis of compliant offshore structures with narrow ice breaking cones that are subjected to ice actions. Further limitations are discussed in the paper.

KW - Oil platform

KW - Ice induced vibration

KW - Ice force model

KW - Conical structures

KW - Compliant structures

U2 - 10.1016/j.coldregions.2006.05.008

DO - 10.1016/j.coldregions.2006.05.008

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JO - Cold Regions Science and Technology

JF - Cold Regions Science and Technology

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