Nonlocal integral formulations of plasticity and damage: survey of progress
Modeling of the evolution of distributed damage such as microcracking, void formation, and
softening frictional slip necessitates strain-softening constitutive models. The nonlocal …
softening frictional slip necessitates strain-softening constitutive models. The nonlocal …
Strain gradient continuum plasticity theories: theoretical, numerical and experimental investigations
GZ Voyiadjis, Y Song - International Journal of Plasticity, 2019 - Elsevier
Over the last three decades, a number of researchers have used the gradient-enhanced
plasticity theory to model the microstructural material behavior, which is not able to be …
plasticity theory to model the microstructural material behavior, which is not able to be …
Filters in topology optimization based on Helmholtz‐type differential equations
BS Lazarov, O Sigmund - International journal for numerical …, 2011 - Wiley Online Library
The aim of this paper is to apply a Helmholtz‐type partial differential equation as an
alternative to standard density filtering in topology optimization problems. Previously, this …
alternative to standard density filtering in topology optimization problems. Previously, this …
Nonlocal constitutive relation for steady granular flow
Extending recent modeling efforts for emulsions, we propose a nonlocal fluidity relation for
flowing granular materials, capturing several known finite-size effects observed in steady …
flowing granular materials, capturing several known finite-size effects observed in steady …
Micromorphic approach for gradient elasticity, viscoplasticity, and damage
S Forest - Journal of Engineering Mechanics, 2009 - ascelibrary.org
A unifying thermomechanical framework is presented that reconciles several classes of
gradient elastoviscoplasticity and damage models proposed in the literature during the last …
gradient elastoviscoplasticity and damage models proposed in the literature during the last …
Multi-scale second-order computational homogenization of multi-phase materials: a nested finite element solution strategy
VG Kouznetsova, MGD Geers… - Computer methods in …, 2004 - Elsevier
This paper presents the detailed implementation and computational aspects of a novel
second-order computational homogenization procedure, which is suitable for a multi-scale …
second-order computational homogenization procedure, which is suitable for a multi-scale …
[图书][B] Non-linear mechanics of materials
In mechanical engineering and structural analysis there is a significant gap between the
material models currently used by engineers for industry applications and those already …
material models currently used by engineers for industry applications and those already …
Localizing gradient damage model with decreasing interactions
LH Poh, G Sun - International Journal for Numerical Methods in …, 2017 - Wiley Online Library
Nonlocal integral and/or gradient enhancements are widely used to resolve the mesh
dependency issue with standard continuum damage models. However, it is reported that …
dependency issue with standard continuum damage models. However, it is reported that …
Comparison of integral-type nonlocal plasticity models for strain-softening materials
M Jirásek, S Rolshoven - International Journal of Engineering Science, 2003 - Elsevier
The paper analyzes and compares a number of softening plasticity models regularized by
nonlocal averaging. To highlight the fundamental properties and gain insight into the …
nonlocal averaging. To highlight the fundamental properties and gain insight into the …
[HTML][HTML] Gradient plasticity theory with a variable length scale parameter
GZ Voyiadjis, RKA Al-Rub - International Journal of solids and structures, 2005 - Elsevier
The definition and magnitude of the intrinsic length scale are keys to the development of the
gradient plasticity theory that incorporates size effects. However, a fixed value of the material …
gradient plasticity theory that incorporates size effects. However, a fixed value of the material …