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A different view of the assumed stress hybrid method
Author(s) -
Barlow John
Publication year - 1986
Publication title -
international journal for numerical methods in engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.421
H-Index - 168
eISSN - 1097-0207
pISSN - 0029-5981
DOI - 10.1002/nme.1620220103
Subject(s) - finite element method , stress (linguistics) , displacement (psychology) , simple (philosophy) , displacement field , stress field , field (mathematics) , stress–strain curve , mathematics , structural engineering , computer science , engineering , pure mathematics , psychology , philosophy , linguistics , epistemology , psychotherapist
A somewhat unconventional, yet simple, derivation of the assumed stress hybrid formulation is presented in which its relationship with displacement and stress‐based finite element models is demonstrated. This gives insight into the hybrid method and shows that it represents a least energy fit of an equilibrium stress field to a displacement model strain field. By this means the attributes of both fields may be exploited in extending the analysis scope of hybrid models.