A material model for inelastic rock deformation with spatial variation of pore pressure | Zendy

Smith M. B. | Zendy; Pattillo P. D. | Zendy

AI Assistant Blog Pricing

Home ZAIA Blog

Premium

A material model for inelastic rock deformation with spatial variation of pore pressure

Author(s) -

Smith M. B.,

Pattillo P. D.

Publication year - 1983

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.1610070407

Subject(s) - yield surface , constitutive equation , plasticity , finite element method , quadratic equation , deformation (meteorology) , yield (engineering) , hardening (computing) , mechanics , strain hardening exponent , geotechnical engineering , structural engineering , materials science , mathematics , geometry , geology , engineering , physics , composite material , layer (electronics)

This paper sets forth the theoretical background and basic numerical expressions for the incorporation of elastic‐plastic constitutive equations for ductile rock into a finite element computer code. The derivation of an expression for the total strain rate is performed both for a total stress formulation and for a formulation that employs the concept of effective stress for inelastic behaviour. Specific expressions for the incremental strain rate are presented for the case of a porous material having a quadratic initial yield surface and observing the associated flow rule with a special hardening law for subsequent plastic deformation. A final section of the paper summarizes the expressions required to insert the quadratic yield surface model into a finite element code.

This content is not available in your region!

Continue researching here.

Having issues? You can contact us here

Accelerating Research