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THE FREQUENCY RESPONSE MODEL OF THERMAL STRIPING FOR CYLINDRICAL GEOMETRIES
Author(s) -
Jones I. S.
Publication year - 1997
Publication title -
fatigue and fracture of engineering materials and structures
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.887
H-Index - 84
eISSN - 1460-2695
pISSN - 8756-758X
DOI - 10.1111/j.1460-2695.1997.tb01531.x
Subject(s) - data striping , thermal , mechanics , materials science , structural engineering , component (thermodynamics) , nuclear engineering , engineering , computer science , physics , thermodynamics , operating system
— The random temperature fluctuation produced by the incomplete mixing of hot and cold fluid streams passing over the surface of a component or structure is known as thermal striping. This phenomenon may cause thermal fatigue to occur. It is of particular concern in various types of nuclear reactors, for rapid shut‐downs of hot plant and in thermal stratification. A computer code, “TBL”, is a design tool which has been developed to assess thermal striping damage in plates. This model is further developed in this paper to assess such damage in cylindrical components. A recent, universal weight function method is examined and incorporated into TBL. Good comparisons are found between TBL and finite element results for a sinusoidally varying temperature‐time‐striping history. Potential thermal striping damage is assessed for a cylindrical component of material typically found in the above‐core region of a fast reactor under a random temperature‐time‐striping history.