Premium
On the choice of elastic parameters for sand
Author(s) -
Loret B.
Publication year - 1985
Publication title -
international journal for numerical and analytical methods in geomechanics
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.419
H-Index - 91
eISSN - 1096-9853
pISSN - 0363-9061
DOI - 10.1002/nag.1610090308
Subject(s) - hyperelastic material , isotropy , elastic modulus , stress path , materials science , moduli , stress–strain curve , stress (linguistics) , geotechnical engineering , elasticity (physics) , dependency (uml) , work (physics) , structural engineering , plasticity , mechanics , geology , composite material , finite element method , engineering , deformation (meteorology) , physics , mechanical engineering , linguistics , philosophy , quantum mechanics , systems engineering
When soils are considered as elastoplastic materials the elastic moduli are much higher than the plastic one(s). However the amount of elastic strain cannot be disregarded as it appears when undrained loading occurs. Based on experimental or theoretical observations, a number of elastic models with stress dependent moduli have been proposed. Attention is focused here on the consequences of this stress dependency on the recoverability of strain and work done after a closed stress path. A necessary and sufficient condition for an elastic material to be hyperelastic is given and the way to obtain practical solutions is shown on examples. The study is restricted to isotropic material undergoing small strains.