Nordic numerical round robin for a side-grooved CT-specimen

Heli Talja

    Research output: Book/ReportReport

    Abstract

    The reliability of fracture mechanics assessments based on finite element method calculations has to be confirmed before making safety assessments for critical components like nuclear pressure vessels. Calculations for simulation of fracture mechanics tests and numerical round robin programmes are useful methods in such verification. In this report the results of Nordic finite element round robin calculations for a side-grooved CT-specimen are presented and compared with experimental results. The round robin consisted of two parts. In the first part two-dimensional calculations assuming plane strain and plane stress behaviour were made. In the second part extensive three-dimensional calculations were performed for best-estimate analysis of the specimen behaviour. The differences between the solutions were comparatively small. Only one two-dimensional solution, where lower order finite elements were used, deviated clearly from the other ones. A good agreement was seen between two-dimensional plane strain results and experimental results. Three-dimensional calculations corresponded very accurately with each others and the experiment.
    Original languageEnglish
    Place of PublicationEspoo
    PublisherVTT Technical Research Centre of Finland
    Number of pages76
    ISBN (Print)951-38-3610-X
    Publication statusPublished - 1989
    MoE publication typeD4 Published development or research report or study

    Publication series

    SeriesValtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports
    Number669
    ISSN0358-5077

    Fingerprint

    fracture mechanics
    plane strain
    plane stress
    pressure vessels
    safety
    finite element method
    estimates
    simulation

    Keywords

    • finite element method
    • numerical solution
    • CT-specimen
    • fracture mechanics
    • assesments
    • reliability

    Cite this

    Talja, H. (1989). Nordic numerical round robin for a side-grooved CT-specimen. Espoo: VTT Technical Research Centre of Finland. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, No. 669
    Talja, Heli. / Nordic numerical round robin for a side-grooved CT-specimen. Espoo : VTT Technical Research Centre of Finland, 1989. 76 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 669).
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    Talja, H 1989, Nordic numerical round robin for a side-grooved CT-specimen. Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports, no. 669, VTT Technical Research Centre of Finland, Espoo.

    Nordic numerical round robin for a side-grooved CT-specimen. / Talja, Heli.

    Espoo : VTT Technical Research Centre of Finland, 1989. 76 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 669).

    Research output: Book/ReportReport

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    N2 - The reliability of fracture mechanics assessments based on finite element method calculations has to be confirmed before making safety assessments for critical components like nuclear pressure vessels. Calculations for simulation of fracture mechanics tests and numerical round robin programmes are useful methods in such verification. In this report the results of Nordic finite element round robin calculations for a side-grooved CT-specimen are presented and compared with experimental results. The round robin consisted of two parts. In the first part two-dimensional calculations assuming plane strain and plane stress behaviour were made. In the second part extensive three-dimensional calculations were performed for best-estimate analysis of the specimen behaviour. The differences between the solutions were comparatively small. Only one two-dimensional solution, where lower order finite elements were used, deviated clearly from the other ones. A good agreement was seen between two-dimensional plane strain results and experimental results. Three-dimensional calculations corresponded very accurately with each others and the experiment.

    AB - The reliability of fracture mechanics assessments based on finite element method calculations has to be confirmed before making safety assessments for critical components like nuclear pressure vessels. Calculations for simulation of fracture mechanics tests and numerical round robin programmes are useful methods in such verification. In this report the results of Nordic finite element round robin calculations for a side-grooved CT-specimen are presented and compared with experimental results. The round robin consisted of two parts. In the first part two-dimensional calculations assuming plane strain and plane stress behaviour were made. In the second part extensive three-dimensional calculations were performed for best-estimate analysis of the specimen behaviour. The differences between the solutions were comparatively small. Only one two-dimensional solution, where lower order finite elements were used, deviated clearly from the other ones. A good agreement was seen between two-dimensional plane strain results and experimental results. Three-dimensional calculations corresponded very accurately with each others and the experiment.

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    KW - fracture mechanics

    KW - assesments

    KW - reliability

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    SN - 951-38-3610-X

    T3 - Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports

    BT - Nordic numerical round robin for a side-grooved CT-specimen

    PB - VTT Technical Research Centre of Finland

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    ER -

    Talja H. Nordic numerical round robin for a side-grooved CT-specimen. Espoo: VTT Technical Research Centre of Finland, 1989. 76 p. (Valtion teknillinen tutkimuskeskus. Tutkimuksia - Research Reports; No. 669).