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Finite element based predictions of life limiting behaviour for a large SPF tool
Author(s) -
Deshpande A.A.,
Leen S.B.,
Hyde T.H.
Publication year - 2008
Publication title -
materialwissenschaft und werkstofftechnik
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.285
H-Index - 38
eISSN - 1521-4052
pISSN - 0933-5137
DOI - 10.1002/mawe.200800296
Subject(s) - distortion (music) , finite element method , clamping , dwell time , limiting , materials science , thermal , creep , temperature cycling , mechanical engineering , cracking , structural engineering , engineering , composite material , thermodynamics , physics , medicine , amplifier , clinical psychology , optoelectronics , cmos
SPF tool distortion due to the thermal cycling can lead to the forming of faulty SPF parts. In addition, thermo‐mechanical fatigue and creep can cause cracking, which eventually lead to un‐repairable damage to the tool. The aim of this paper is to investigate the thermo‐mechanical distortion behaviour of a representative large SPF tool under realistic forming conditions using finite element analysis. Platen‐tool contact and clamping pressure along the edges of the tool during the dwell time are modelled. The effects of heating and cooling cycles on tool distortion are analysed using different thermal histories with different heating and cooling rates. The effect of batch size on tool distortion is evaluated to optimise the batch size.