Results 261 to 270 of about 207,558 (286)
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A multi-surface plasticity model for ductile fracture simulations
Journal of the Mechanics and Physics of Solids, 2017Abstract The growth and coalescence of micro-voids in a material undergoing ductile fracture depends strongly on the loading path. Void growth occurs by diffuse plasticity in the material and is sensitive to the hydrostatic stress, while void coalescence occurs by the localization of plastic deformation in the inter-void ligaments under a combination
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Ductile failure simulations using a multi-surface coupled damage-plasticity model
International Journal of Plasticity, 2019Abstract Ductile failure of isotropic porous materials is studied using a coupled damage-plasticity model, accounting for void growth by diffuse plastic flow as well as void coalescence by plastic flow localization in the inter-void ligaments. The model is based on a multi-surface yield criterion, consisting of the Gurson yield criterion for a porous
D. Reddi, V.K. Areej, S.M. Keralavarma
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2020
Wood is an extraordinary natural composite material exhibiting a pronounced orthotropic behaviour, and markedly different properties along the parallel and transverse-to-the grain directions. It displays a strongly non-linear response, almost elastic-plastic under compression and elastic-damaging under tension and shear.
Orlando N., Benvenuti E.
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Wood is an extraordinary natural composite material exhibiting a pronounced orthotropic behaviour, and markedly different properties along the parallel and transverse-to-the grain directions. It displays a strongly non-linear response, almost elastic-plastic under compression and elastic-damaging under tension and shear.
Orlando N., Benvenuti E.
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International Journal of Damage Mechanics, 2017
A non-local gradient-enhanced damage-plasticity formulation is proposed, which prevents the loss of well-posedness of the governing field equations in the post-critical damage regime. The non-locality of the formulation then manifests itself in terms of a non-local free energy contribution that penalizes the occurrence of damage gradients.
Bjoern Kiefer +3 more
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A non-local gradient-enhanced damage-plasticity formulation is proposed, which prevents the loss of well-posedness of the governing field equations in the post-critical damage regime. The non-locality of the formulation then manifests itself in terms of a non-local free energy contribution that penalizes the occurrence of damage gradients.
Bjoern Kiefer +3 more
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On constitutive equations for arbitrary stress-strain control in multi-surface plasticity
International Journal of Solids and Structures, 1998zbMATH Open Web Interface contents unavailable due to conflicting licenses.
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Advanced Materials Research, 2008
The recently performed investigations in continuum plastic-damage analysis of composite laminates by the authors showed that using a single hardening internal variable for damage and plasticity surfaces may prone to significant errors in response and failure load for some lay-ups.
Bijan Mohammadi +3 more
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The recently performed investigations in continuum plastic-damage analysis of composite laminates by the authors showed that using a single hardening internal variable for damage and plasticity surfaces may prone to significant errors in response and failure load for some lay-ups.
Bijan Mohammadi +3 more
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Saint‐Venant multi‐surface plasticity model in strain space and in stress resultants
Engineering Computations, 2005Summary: We present a new constitutive model for capturing inelastic behavior of brittle materials. The multi-surface plasticity theory is employed to describe the damage-induced mechanisms. An original feature concerns the multi-surface criterion which limits the values of elastic strains, which is equivalent to Saint-Venant plasticity model.
Colliat, J.-B. +2 more
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Mechanism-based multi-surface plasticity model for ideal truss lattice materials
International Journal of Solids and Structures, 2005Abstract The mechanical behavior of ideal truss lattice materials is controlled by the so-called direct action mechanism at the microscale which involves the uniform stretching and compressing of individual truss members. Standard homogenization techniques have been employed to develop a general micromechanics-based finite-strain constitutive model ...
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Journal of Mechanical Science and Technology, 2010
This study examines the performance of four constitutive models according to capacity in predicting metal fatigue life under proportional and non-proportional loading conditions. These cyclic plasticity models are the multi-surface models of Mroz and Garud, and the non-linear kinematic hardening models of Armstrong-Frederick and Chaboche.
Shahrooi, S., Metselaar, I.H., Huda, Z.
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This study examines the performance of four constitutive models according to capacity in predicting metal fatigue life under proportional and non-proportional loading conditions. These cyclic plasticity models are the multi-surface models of Mroz and Garud, and the non-linear kinematic hardening models of Armstrong-Frederick and Chaboche.
Shahrooi, S., Metselaar, I.H., Huda, Z.
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Journal of Composite Materials, 2018
In this paper, a three-dimensional anisotropic multi-surface model for the in-plane elastoplastic deformation of paper and paperboard is developed. The model is based on the concept of structural tensors. It employs three different yield functions and parameterised consistency conditions for three different loading scenarios.
Rex Bedzra +3 more
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In this paper, a three-dimensional anisotropic multi-surface model for the in-plane elastoplastic deformation of paper and paperboard is developed. The model is based on the concept of structural tensors. It employs three different yield functions and parameterised consistency conditions for three different loading scenarios.
Rex Bedzra +3 more
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