Modelling the Constraint Effect on Reference Temperature with Finite Element Parameters for Reactor Pressure Vessel Material 20MnMoNi55 Steel | Zendy

Kushal Bhattacharyya | Zendy; Sanjib Kumar Acharyya | Zendy; S. Dhar | Zendy; J. Chattopadhyay | Zendy

Open Access

Modelling the Constraint Effect on Reference Temperature with Finite Element Parameters for Reactor Pressure Vessel Material 20MnMoNi55 Steel

Author(s) -

Kushal Bhattacharyya,

Sanjib Kumar Acharyya,

S. Dhar,

J. Chattopadhyay

Publication year - 2020

Publication title -

defence science journal

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.198

H-Index - 32

eISSN - 0976-464X

pISSN - 0011-748X

DOI - 10.14429/dsj.70.12886

Subject(s) - materials science , finite element method , constraint (computer aided design) , bending , brittleness , structural engineering , stress (linguistics) , point (geometry) , constant (computer programming) , composite material , mechanics , mathematics , geometry , engineering , physics , computer science , linguistics , philosophy , programming language

A series of experiments were performed in the ductile to brittle transition region on three-point bending specimens of different thicknesses and a/W ratio of 20MnMoNi55 steel. Master curve and reference temperature (T0) are obtained as per ASTM E1921-02 with different thickness and a/W ratio of the specimen and a variation of T0 is obtained, which indicates constant dependent on T0. Mathematic models are formulated to correlate T0 with Q-stress, T-stress and Triaxiality ratio to count for the constraint loss. Both the average value and also the maximum value of the finite element parameters are considered to predict T0 at different constraint label and compared with the experimental results.

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