Results 211 to 220 of about 41,400 (261)

Endochronic Theory of Cyclic Plasticity With Applications

Journal of Applied Mechanics, 1984
Integral constitutive equations of the endochronic type with only two easily determined material constants are shown to predict with computational ease the stress (plastic strain) response of normalized mild steel and Grade 60 steel to a variety of general strain (stress) histories, without a need for special unloading-reloading or memory rules.
Valanis, K. C., Lee, C. F.
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Modelling of Cyclic Plasticity and Crack Propagation

Key Engineering Materials, 2010
An experimental and numerical study of the cyclic deformation and low-cycle fatigue behaviour of the aluminium alloy AlCu5BiPb–T8 is presented. The experimental program included monotonic tensile tests, symmetric and unsymmetric strain-controlled fatigue tests, fracture toughness tests, as well as fatigue crack initiation and propagation tests.
Kodvanj, Janoš, Tomičević, Zvonimir, Bakić, Ante, Tonković, Zdenko, Čanžar, Predrag   +4 more
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Cyclic Plasticity and Ratchetting

1994
A robust kinematic hardening rule is proposed which appropriately blends the deviatoric stress rate rule and the Tseng-Lee rule in order to satisfy both the experimental observations made by Phillips et al. and the nesting of the yield surface to the limit surface.
George Z. Voyiadjis, Srinivasan M. Sivakumar   +1 more
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Constitutive equations for cyclic plasticity and cyclic viscoplasticity

International Journal of Plasticity, 1989
Abstract The cyclic constitutive equations developed and used at ONERA and LMT-Cachan are presented in detail in terms of a hierarchy of various models. Both the time-independent and the viscoplasticity versions of the equations are discussed, as well as their ability to describe correctly most of the experimentally observed effects under monotonic ...
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Cyclic plasticity, creep, and TMF

2005
Abstract In Chapter 9, we examined creep in the aero-engine combustor material nickel-base superalloy C263. In this chapter, we address combined anisothermal cyclic plasticity and creep. We use time-independent cyclic plasticity with both isotropic and kinematic hardening which we combine with the physically based creep model described ...
Fionn Dunne, Nik Petrinic
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Damage Models for Cyclic Plasticity

Key Engineering Materials, 2003
The process of void growth in ductile materials under alternating plastification is studied by means of unit-cell calculations. Constitutive models for damage evolution in ductile materials as the micromechanical model by Gurson, Tvergaard and Needleman and the continuum damage model by Rousselier are systematically investigated with respect to their ...
Wolfgang Brocks, Dirk Steglich
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A Phenomenological Model for Cyclic Plasticity

Journal of Engineering Materials and Technology, 1997
A phenomenological model is proposed for cyclic plasticity based on the concept of distributed elements, which is capable of reflecting microstructural behavior of real materials under multiaxial cyclic loading conditions. By investigating the detailed behavior of the model, various important phenomena and effects of materials in cyclic plasticity can ...
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Simplified theories of cyclic plasticity

Acta Mechanica, 1975
Simple theories of plasticity such as flow rules associated with a single yield surface are sufficiently accurate in predicting plastic behaviour for monotonic loading. However, for alternating or cyclic loads, such theories cannot describe complex plastic behaviour with sufficient accuracy.
Mroz, Zenon, Lind, N. C.
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A constitutive model of cyclic plasticity

International Journal of Plasticity, 2000
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Implementation of MAKOC cyclic plasticity model with memory

Advances in Engineering Software, 2017
Abstract This paper deals with the description of implementation of the advanced cyclic plasticity model called MAKOC, which is based on the AbdelKarim–Ohno kinematic hardening rule, the isotropic hardening rule of Calloch and a memory surface introduced in a stress space in accordance with the Jiang-Sehitoglu concept.
Radim Halama, Alexandros Markopoulos, Roland Janco, Matej Bartecký   +3 more
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