Results 241 to 250 of about 147,595 (279)

On the modeling of hardening in metals during non-proportional loading

International Journal of Plasticity, 2008
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Wang, J., Levkovitch, V., Reusch, F., Svendsen, B., Huétink, J., van Riel, M.   +5 more
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Fatigue-based topology optimization with non-proportional loads

Computer Methods in Applied Mechanics and Engineering, 2019
zbMATH Open Web Interface contents unavailable due to conflicting licenses.
Shanglong Zhang, Chau Le, Arun L. Gain, Julián A. Norato   +3 more
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The buckling loads of unbraced PR frames under non-proportional loading

Journal of Constructional Steel Research, 2002
Abstract This paper discusses the elastic stability of unbraced frames with partially restrained (PR) connections under non-proportional loading drawing upon the concept of storey-based buckling. The problem of determining critical elastic buckling loads of the frames under non-proportional loading is expressed as a pair of minimization and ...
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Multiaxial low cycle fatigue life of Ti-6Al-4V under non-proportional loading with mean strain

Theoretical and Applied Fracture Mechanics, 2017
The mean strain effect on the multiaxial low cycle fatigue behavior of Ti-6Al-4V was investigated. Strain-controlled multiaxial low cycle fatigue tests at room temperature were carried out using a tubular specimen in tension and torsion loadings.
Takamoto Itoh
exaly   +2 more sources

Modeling the evolution of dislocation populations under non-proportional loading

International Journal of Plasticity, 2014
The two-phase composite approach of Estrin et al. (1998) describes an evolving dislocation cell structure with dislocation populations for cell walls and the interior. Mckenzie et al. (2007) enhanced the model to capture the effects of hydrostatic pressure and temperature during severe plastic deformation.
C.B. Silbermann, A.V. Shutov, J. Ihlemann   +2 more
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The non-proportional loading of mild steel

Materials Research Proceedings
Abstract. The effect of proportional loading on formability has been extensively studied. However, non-proportional loading occurs frequently in a stamping operation and its impact on formability has been studied less. Non-proportional loading occurs in two areas of stamping: continuously during the draw stage of a complex geometry and discontinuously ...
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Creep rupture of copper and aluminium under non-proportional loading

Journal of the Mechanics and Physics of Solids, 1981
Abstract The development of existing constitutive equations is described for high temperature creep deformation and rupture under proportional loading. The validity of these equations has been assessed for non-proportional loading of copper and aluminium alloy test specimens.
W.A. Trampczynski, D.R. Hayhurst, F.A. Leckie   +2 more
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Creep Deformation and Rupture Under Non-Proportional Loading

1981
The behaviour of copper, an aluminium alloy and Nimonic 80A has been investigated for non-proportional loading conditions. The results of simple creep experiments conducted on thin tubes are reported and are interpreted in the light of a single state variable theory for proportional loading. It is shown that the behaviour of the chosen materials may be
W. A. Trampczynski, D. R. Hayhurst
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Universal cycle counting for non-proportional and random fatigue loading

International Journal of Fatigue, 2020
Abstract The article examines a universal method to count cycles in the context of non-proportional, multiaxial fatigue. It is independent of the damage criterion used to predict the lifetime curve, and provides the same number of cycles as when using the classic counting methods for proportional loading cases.
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A multiaxial cyclic plasticity model for non-proportional loading cases

International Journal of Plasticity, 1998
From the conclusions: We propose a two-surface plasticity model for non-proportional loading using a nonlinear hardening rule with evanescent memory evolution. The additional term incorporated in the Armstrong-Frederick kinematic hardening rule for cyclic loading is modified to account for continuous non-proportional stress loading paths.
Basuroychowdhury, I. N., Voyiadjis, G. Z.   +1 more
openaire   +2 more sources