Continuum Damage Mechanics IEEE PAPER
Continuum damage mechanics for hysteresis and fatigue of quasi-brittle materials and structures
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SUMMARY For material exhibiting hysteresis such as quasi-brittle materials, it is natural to consider that hysteresis and fatigue are related to each other. One shows in the present work that damage, from the Continuum Damage Mechanics point of view, may be seen as
On the symmetrization of the effective stress tensor in continuum damage mechanics
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The effective stress tensor is examined within the framework of continuum damage mechanics. For a general state of deformation and damage, it is seen that the effective stress tensor is usually not symmetric. Therefore, its symmetrization is necessary
A combination of continuum damage mechanics and the finite element method to analyze acrylic bone cement cracking around implants
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A COMBINATION OF CONTINUUM DAMAGE MECHANICS AND THE FINITE ELEMENT METHOD TO ANALYZE ACRYLIC BONE CEMENT CRACKING AROUND IMPLANTS N. Verdonschot1 and R. Huiskes2 1. ABSTRACT In this paper we present a method to simulate acrylic
Discrete versus continuum damage mechanics: a probabilistic perspective
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ABSTRACT The degradation and failure of brittle or quasi-brittle materials are analyzed in this Lecture. The main emphasis is put on the discrimination between discrete and continuum approaches to describe damage. The materials studied herein are mostly
A unified continuum damage mechanics model for predicting the mechanical response of asphalt mixtures and pavements
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Abstract. Predicting the performance of asphalt pavements is a very challenging task due to the complex behavior of asphalt mixtures and the complex traffic and environmental loading conditions to which these pavements are subjected. In this paper, a unified continuum-
The application of continuum damage mechanics to pre-clinical testing of cemented hip prostheses: the effects of cement/stem debonding
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SUMMARY Using the finite element method, combined with the theory of continuum damage mechanics, the damage process of the acrylic bone cement around a femoral hip prosthesis was simulated under variable stem/cement interface conditions. It was found that these
Survey of modern trends in analysis of continuum damage mechanics
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Abstract: A brief review of the damage mechanics literature is given. As this area of scientific research is very modern, the authors have restricted themselves to about 100 most important books and papers. Basic equations to introduce the isotropic model in the framework of
Strength of textile composites A voxel based continuum damage mechanics approach
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For the prediction of composite strengths with representative volume elements (RVE) a thorough understanding of the ongoing failure mechanisms is needed. This again is influenced by the manufacturing process. Therefore, a brief overview on fabrication, Abstract. This paper examines the application of uncoupled continuum damage mechanics to the prediction of stable crack growth in engineering materials. The formulation of predictive damage methodology and the implementation into a finite element code is This chapter gives the reader the necessary and sufficient information to deal with practical applications of Continuum Damage Mechanics (the term was first introduced to predict the crack initiation in structures subjected to heavy loadings. This ranges
Fatigue crack modeling and simulation based on continuum damage mechanics
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Numerical simulation of fatigue crack propagation based on fracture mechanics and the conventional finite element method requires a huge amount of computational resources when the cracked structure shows a complicated condition such as the multiple site
Modeling Flexural Fatigue Behavior Using Viscoelastic Continuum Damage MechanicsPrinciples
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Abstract Fatigue cracking is one of the major distresses in asphalt pavements. The AASHTO protocol for fatigue characterization using third point loading of a beam is popular in the engineering community due to its simplistic nature. This protocol requires testing different Many experiments have verified that W,~ is a material constant independent of stress state [7- 9, 11]. It is readily seen that the criterion can be used as a unified ductile fracture theory for cracked and uncracked solids. Conditionsfor mixed mode
A Unified Continuum Damage Mechanics Model for Predicting the Stress Relaxation Behavior of High-Temperature Bolting
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Two stress relaxation constitutive models have been developed to predict the stress relaxation behavior for high-temperature bolting according to continuum damage mechanics,
Constitutive model for wood based on continuum damage mechanics
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ABSTRACT: Based on the theory of continuum damage mechanics (CDM), a 3D constitutive model was developed that allows for a holistic approach for timber models. With one single material model, simultaneous ductile and brittle behaviour of wood can be simulated and
CONTINUUM DAMAGE MECHANICS
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Contents Abstract vii Notation
Application of Mixed-Mode Cohesive Damage Laws to Continuum Damage Mechanics
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A number of different approaches based on the framework of continuum damage mechanics (CDM) have been proposed to predict the initiation and evolution of damage in composite materials. These methods assume that once an elastic limit is exceeded, certain moduli
Modelling and numerical simulation of thick sheets slitting using continuum damage mechanics
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Abstract. The continuum damage mechanics (CDM) has now reached a high level of maturity and is currently used to solve various engineering problems involving the development of various kinds of fractureThis work consists in the
Ductile fracture prediction in bulk metal forming using multiscale and continuum damage mechanics models
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Abstract Two damage models are used in this study to predict ductile fracture of an aluminium alloy during metal forming process. The first one is developed in the framework of phenomenological approach of damage mechanics. The second model is the
Failure analysis of laminates by implementation of continuum damage mechanics in layer-wise finite element theory
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Abstract. In this paper a 3-D continuum damage mechanics formulation for composite laminates and its implementation into a finite element model that is based on the layer-wise laminate plate theory are described. In the damage formulation, each composite ply is
Thermo-mechanical fatigue analysis using generalized continuum damage mechanicsand the finite element method
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SUMMARY In this paper, a thermo-mechanical constitutive model for the predictions of fatigue in structures using the finite element method is formulated. The model is based on the damage mechanics of the continuous medium and allows the treatment, in a unified
Integration of governing differential equations of continuum mechanics with scanning laser vibrometry technology for monitoring of structural damage
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Abstract This paper discusses an algorithm based on the fundamental principles of continuum mechanics (viz. strain compatibility and conditions of equilibrium) in identifying delamination in composite beams. Using a 3D scanning laser vibrometer, the out-of-plane Abstract In this chapter, the governing thermodynamic laws on the damage and healing processes are revisited. The solid mechanics thermodynamic framework provides a physically consistent description for the deformation mechanisms in solids, and it has Abstract Microscale damage mechanisms, such as microcracks or microvoids, are well- known damage process zones for the formation of the macroscale cracks. The microscale defects, which are in the order of submicrons, will coalesce and branch within the course
Three Dimensional Damage Modeling Based on the Continuum Damage Mechanics and its Nonlinear Finite Element Analysis
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ABSTRACT In this paper, an isotropic, elasto-plastic damage model based on the theory of materials of type N is proposed to analyze a progressive damage of a three dimensional solids with elstoplastic deformation, large rotation, and damage effects. A reasonable
A Continuum Damage Mechanics Based Damage Initiation and Evolution in Laminated Composites
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Abstract In this paper the damage mechanics of laminated composites is modeled via continuum based mesomodel. In this study the laminate is modeled as a set of alternate homogeneous ply and an interlaminar interface. The inter laminar interface is a two-
Damage evolution law in the framework of continuum damage mechanics for UD composites
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Continuum damage mechanics (CDM) was introduced to deal with the progressive nature of failure in composites decades ago [1-3]. Early development of CDM has been concentrated on the damage representation, ie mathematical description of damage as a continuum. In
A PHYSICALLY-BASED CONTINUUM DAMAGE MECHANICS MODEL
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Abstract Rapid growth in use of composite materials in structural applications drives the need for a more detailed understanding of damage tolerant and damage resistant design. Current analytical techniques provide sufficient understanding and predictive capabilities
Numerical Analysis on Low-Velocity Impact Damage of Laminated Composites by CombiningContinuum Damage Mechanics with Cohesive Zone Model
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When laminated composites are applied in the aircraft, they may suffer from tool dropping, stone hitting, bird impact and so on. These impactors can be summarized as drop-weight (high mass, low velocity) or gas-gun (low mass, high velocity)[1]. It is known that the plate-
A continuum damage mechanics based bone remodeling model in a finite strains framework.
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Page 1. A continuum damage mechanics based bone remodeling model in a finite strains framework.Aerospace and Mechanics Department University of Belgium Orthodontic treatment : Apparatus External forces system Alveolar bone
Continuum Damage Mechanics Based Response Prediction in Laminated Composites under Static Damage
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Abstract: In the present paper continuum damage based meso-model proposed by [1, 2] is used to predict the response of initially damaged laminated composites. The model is based on three foundations of meso-model, internal variable approach and method of local state.
Continuum Damage Mechanics Based Modeling
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Continuum Damage Mechanics Based Modeling of Fiber Reinforced Concrete in Tension Faming Li* and ZongjinLi'r Department of Civil Engineering Hong Kong University of Science and Technology Clear Water Bay, Kowloon, Hong Kong Abstract The tensile properties of concrete can be
CONTINUUM DAMAGE MECHANICS APPROACH FOR ANALYSIS OF CRACK NUCLEATION IN FRETTING
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ABSTRACT A thermodynamically-based continuum damage mechanics approach (CDM) is employed as a propitious method to study the surface damage due to fretting in linecontact configuration. Intense stress gradients exist in the contact region and are found to be
Numerical Erosion in Continuum Damage Mechanics
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Concrete is a quasi-brittle material used in a multitude of construction practices. Common examples to these practices include high rise sky scrappers, bridges, residential buildings and military infrastructure. Some of these structures, especially the military ones, are
Buckling, postbuckling and progressive failure analysis of hybrid composite shear webs using a continuum damage mechanics model
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ABSTRACT This dissertation presents an innovative analysis methodology to enhance the design of composite structures by extending their work range into the postbuckling regime. This objective is accomplished by using the numerical simulation capabilities of nonlinear The continuum-mechanics approach to studies of damages was initiated by LM Kachanov and Yu.N. Rabotnov [1], who introduced the concept of damage measure. This measure characterizes the den- sity of microcracks, micropores, plastic microstrains, and other newborn defects.
OF THE SLOW STRAIN RATE AND CONSTANT LOAD CORROSION TESTING OF AUSTENITIC STEELS USING CONTINUUM DAMAGE MECHANICS
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Abstract. The present work is concerned with an alternative methodology for modeling both SSR (Slow Strain Rate) and CL (Constant Load) testing based upon Continuum Damage Mechanics. The modeling accounts for the stress corrosion cracking of the specimen in
Modeling of slow strain rate corrosion testing of austenitic stainless steel throughcontinuum damage mechanics
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Abstract Slow strain rate testing is widely used on stress corrosion cracking research as the basic experimental technique to promote the incidence of cracking and to determine the ranking of susceptibility of different alloys in several corrosive environments. With this
Modeling of Ductile Failure Based on Continuum Damage Mechanics Coupled with Anisotropic Plasticity
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ABSTRACT Ductile failure is one of the subjects that many researches on which have been done, up to now. X100 pipeline steel is one of the recently developed materials for gas transfer pipe production. Regarding the metallurgical structure and different treatments,
A Continuum Damage Mechanics Model for Multiaxial Low Cycle Fatigue Failure
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1. ABSTRACT A continuum damage mechanics model for low cycle fatigue failure of initially isotropic materials under multiaxial loading is presented. The expression for the equivalent strain in the fatigue damage evolution equation contains the three material parameters
On the Use of Gurson's Model in Continuum Damage Mechanics
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= ss s s es, where s denotes the Cauchy stress tensor, M s the flow yield strength, q= 3/2 and x is a function of the void volume fraction v. An essential fact is the presence of the hydrostatic stress [1]. Close relations exist between stress levels in the matrix material,
Finite Element Modeling of Fatigue Damage Using a Continuum Damage Mechanics Approach
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In this paper, a fatigue model formulated in the framework of the continuum damage mechanics (CDM) is presented. The model is based on an explicit definition of fatigue damage and introduces a kinematic damage differential equation formulated directly as a
Implementing continuum damage-healing mechanics within a multiscale finite element setting
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ABSTRACT Self-healing materials are a subclass of smart materials that have the ability to repair damage inflicted by various external stimuli eg mechanical, chemical, thermal and ballistic amongst many. The self-healing mechanism acts either autonomously and
The application of continuum damage mechanics to fatlgue farIure mechamsms
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Abstract Continuum Damage Mechanics is applied to the modeling of fatigue failure mechanisms. The resulting equations are solved by discretizing the time domain and the space domain. A tremendous reduction of computing times is achieved by uncoupling the
Prediction of Damage Zone Growth in Composites Using Continuum Damage Mechanics
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The continuum damage mechanics (CMD) approach is used to model damage zone growth in a unidirectional polymer matrix composite failing under shear stress. The long, single cracks that develop under this configuration do not match well with the homgenized This book results from the elective course 'Continuum Damage and Fracture Mechanics'(3510ENG) held at Griffith University, Australia, in the scope of the 'Bachelor of Engineering with Honours in Mechanical Engineering'degree program. This 13-week Abstract In this chapter, the governing thermodynamic laws on the damage and healing processes are revisited. The solid mechanics thermodynamic framework provides a physically consistent description for the deformation mechanisms in solids, and it has
Application of Continuum Damage Mechanics Approach for the Strength Analysis of Reinforced Concrete Constructions
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A GEOMETRICALLY NONLINEAR FRAMEWORK FOR CONTINUUM DAMAGE MECHANICS
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Abstract. This contribution aims in the set-up of a framework for geometrically nonlinear continuum damage mechanics which allows for the description of damage by second order tensors. To this end, so called fictitious undamaged or rather microscopic configurations
Continuum damage mechanics modelling based on simulations of microstructural
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In recent years, the modelling of microstructural evolution of power plant steels has been seen increasing interest and development. Different techniques exist, such as the methods developed by Bhadeshia's group,Faulkner's groupl4 and those used in the DICTRA
Ultimate strength and fatigue life of concrete elements reinforced with carbon fiber sheet based on continuum damage mechanics
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ABSTRACT: Continuum Damage Mechanics (CDM) was applied to evaluate the mechanical behavior of concrete structural elements reinforced with carbon fiber sheet (CF-sheet) under quasi-static and cyclic loading. A constitutive equation for elasto-plastic damageable
Grain Refinement and Damage of Polycrystalline Materials during Large Plastic Deformations: From the Viewpoint of Continuum Mechanics
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Grain refinement under severe plastic deformations is currently being studied by a large number of laboratories throughout the world, due to the fact that ultra-fine grained structures have very appealing physical and mechanical properties. This surge of interest led to a
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