Results 221 to 230 of about 79,182 (234)

Ductile failure under non-proportional loading

Journal of the Mechanics and Physics of Solids, 2022
Mayank Chouksey, Shyam M. Keralavarma
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Crack trajectories under mixed mode and non-proportional loading

International Journal of Fracture, 1996
A novel testing procedure for mixed mode crack propagation is presented; it offers the possibility of non-proportional loading and of changing the crack trajectory during testing, features which allow non-traditional mixed mode tests which, in turn, may help in discriminating mixed mode fracture criteria. Detailed experimental stable crack trajectories
J. Galvez, M. Elices, G. V. Guinea, J. Planas   +3 more
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Microplane modeling of sand behavior under non-proportional loading

Computers and Geotechnics, 2006
Abstract Within a microplane theory framework, a model has been developed to simulate the response of sandy soils subjected to non-proportional loading, which occurs in geotechnical engineering. The microplane framework assumes that macroscopic deformations originate with the deformations in the vicinity of planes between particles.
Kuang-Tsung Chang, Stein Sture
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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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Modeling of stable cyclic stress‐strain responses under non‐proportional loading

ZAMM - Journal of Applied Mathematics and Mechanics / Zeitschrift für Angewandte Mathematik und Mechanik, 2017
AbstractThis paper proposes a simple two‐surface plasticity model for strain controlled conditions which includes only five material constants to describe the stable stress‐strain relationship under extensive non‐proportional loadings. In this model, the Mróz kinematic hardening rule is adopted to describe the instantaneous translation of the yield ...
Li, Jing, Li, Chun-wang, Zhang, Zhong-ping   +2 more
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Microcrack propagation under non-proportional multiaxial alternating loading

2003
Abstract Non-proportional multiaxial fatigue tests of tubular specimens were performed under purely alternating strain-controlled loading. Both the load paths and the phase shifts were varied. With increasing phase shift at the same equivalent load, the lifetime was found to increase.
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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
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Dynamic Plastic Deformation for Non-Proportional Loading Paths

1982
Improved understanding of the plastic response of metals subjected to loading histories which include marked changes in direction of the stress trajectories (in a hyperspace of components of the stress tensor) is of fundamental importance in plasticity theory and its applications.
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Anisotropic Plasticity During Non-proportional Loading

2022
Frédéric Barlat, Seong-Yong Yoon
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Choice of Objective Rate for Non-Proportional Loading Applications

Computer Technology and Applications, 2004
Traditionally, the validation of three dimensional constitutive formulations (i.e. theories of plasticity) has been carried out using biaxial testing. The most widely used method for biaxial testing is the combined tension-torsion loading of thin-walled cylindrical specimens. Unfortunately, the results obtained in the past, using the incremental theory
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