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

Heli Talja

Research output: Book/ReportReportProfessional

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

NameTutkimuksia / Valtion teknillinen tutkimuskeskus
PublisherVTT
Volume669

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/ReportReportProfessional

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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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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).