Computational modelling of cracks in viscoplastic media [PDF]
, 2001 A newly developed numerical model is used to simulate propagating cracks in a strain softening viscoplastic medium. The model allows the simulation of displacement discontinuities independently of a finite element mesh.
De Borst, R, Sluys, LJ, Wells, GN
core
On the thermodynamics of stress rate in the evolution of back stress in viscoplasticity [PDF]
A thermodynamic foundation using the concept of internal state variables is presented for the kinematic description of a viscoplastic material. Three different evolution equations for the back stress are considered.
Chaboche, J.-L. +2 more
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Models of nonlinear kinematic hardening based on different versions of rate-independent maxwell fluid [PDF]
, 2017 Different models of finite strain plasticity with a nonlinear kinematic hardening are analyzed in a systematic way. All the models are based on a certain formulation of a rate-independent Maxwell fluid, which is used to render the evolution of backstresses.
Shutov, Alexey V.
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Finite element implementation of state variable-based viscoplasticity models [PDF]
The implementation of state variable-based viscoplasticity models is made in a general purpose finite element code for structural applications of metals deformed at elevated temperatures.
Chang, T. Y. P. +2 more
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MODELLING OF SILO DISCHARGE AND FILLING PROBLEMS BY THE MATERIAL POINT METHOD
TASK Quarterly, 2003 The problems of flow of a granular material in the processes of silo discharge and filling are considered. Dynamic, two-dimensional problems are analyzed, both the plane and axisymmetric ones.
ZDZISŁAW WIĘCKOWSKI
doaj
A tridimensional finite element approach to model a tunnel with shotcrete and precast concrete
Revista IBRACON de Estruturas e MateriaisThis paper describes a numerical simulation with 3D finite elements of a tunnel. The viscoplastic law of Perzyna represents the rockmass behavior. The concrete, shotcrete or precast, is modeled as a viscoelastic material through the Maxwell and Kelvin ...
P. V. Fiore +2 more
doaj +1 more source
Viscoplastic constitutive models for zero-thickness interface elements, formulation and applications [PDF]
, 2019 An energy-based work-softening visco-plastic model for zero-thickness interface elements has been developed as an extension of an existing elastic-perfectly-viscoplastic formulation.
Carol, Ignacio, Jaqués Adell, Irene
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Numerical Analysis of Resource Characteristics of Structural Elements under Thermocycling Loading [PDF]
Journal of Applied and Computational MechanicsWe discuss methodological aspects of assessment of the service life of structures and devices used in new technologies, paying a particular attention to non-stationary thermomechanical loading of “dangerous” zones of the systems under investigation.
Leonid Igumnov +3 more
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A Temperature-Dependent Viscoplasticity Model for the Hot Work Steel X38CrMoV5-3, Including Thermal and Cyclic Softening under Thermomechanical Fatigue Loading. [PDF]
Materials (Basel), 2023 Schlayer M, Warwas M, Seifert T.
europepmc +1 more source