Heterogeneous materials
Stochastic modeling of random heterogeneous materials
... 13 Heterogeneous materials play a predominant role in the engineering industry due to their enhanced physical ...of heterogeneous materials which abound in everyday life and ...such ...
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An efficient finite element based multigrid method for simulations of the mechanical behavior of heterogeneous materials using CT images
... X-ray tomography techniques give researchers the full access to material inner structures. With such ample information, employing numerical simulation on real material images becomes more and more common. Material ...
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Deep learning in heterogeneous materials: Targeting the thermo-mechanical response of unidirectional composites
... of heterogeneous materials, ranging from the simplest rule-of-mixture assumptions and processing to the more complex geometric models that require computationally demanding analytical and numerical ...
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A robust method for mechanical characterization of heterogeneous materials by nanoindentation grid analysis
... ð Þ 2 t ð5Þ where P i corresponds to the distribution of the experimental nanoin- dentation and t is the chosen number of bins for the histogram. Later, using this technique, several authors [ 7 , 8 ] have analyzed sev- ...
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Effective mechanical response of non-linear heterogeneous materials comprising bimodular phases
... porous materials, non-linear constitutive response, computational ...Creating materials with optimized overall properties has long been a central concern in many engineering ...of heterogeneous ...
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Self-consistent modelling of heterogeneous materials with an elastic-viscoplastic behavior: Application to polycrystalline agregates
... of heterogeneous disordered ...of heterogeneous materials with an elastic-viscoplastic ...such materials, the overall behavior is strongly dependent on the space-time couplings originating ...
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An efficient strategy for large scale 3D simulation of heterogeneous materials to predict effective thermal conductivity
... a Research Institute in Civil Engineering and Mechanics (GeM), CNRS UMR 6183, École Centrale de Nantes, 1 rue de la Noë, 44321 Nantes Cedex 3, France b Univ Lyon, INSA-Lyon, CNRS UMR5259, LaMCoS, F-69621, France The ...
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An affine formulation for the self-consistent modeling of elasto-viscoplastic heterogeneous materials based on the translated field method
... of heterogeneous materials with an elasto-viscoplastic behavior is generally complex because of the differential nature of the local constitutive ...the heterogeneous problem involves space-time ...
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Intermittency and roughening in the failure of brittle heterogeneous materials
... characterized by universal statistical features that can be predicted theoretically using FRG methods and are compatible with experimental observations. The analogy between the onset of crack propagation and a critical ...
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An affine formulation for the self-consistent modeling of elasto-viscoplastic heterogeneous materials based on the translated field method
... of heterogeneous materials with an elasto-viscoplastic behavior is generally complex because of the differential nature of the local constitutive ...the heterogeneous problem involves space-time ...
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Failure of brittle heterogeneous materials, Intermittency, Crackling and Seismicity
... agate through brittle heterogeneous materials. First, [ Salminen et al. ( 2006 ); Koivisto et al. ( 2007 )] experimentally investigated the AE statistics in the steady regime of crack propagation of paper ...
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Multiscale analysis of brittle failure in heterogeneous materials
... Keywords: heterogeneous materials, quasi-brittle failure, coarse-graining, damage modelling, multiscale ...better-performing materials has long been established, and expansion of the boundaries of ...
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Elasto-plasticity of heterogeneous materials at different scales
... nonlinear heterogeneous materials which are made either from purely elastic or purely dissipative ...of heterogeneous materials as well as some of the statistics of the local ...
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A general method for the determination of the local orthotropic directions of heterogeneous materials: application to bone structures using µCT images
... 1. Introduction Computed tomography (CT) and microcomputed tomography ( µCT) are power- ful imaging tools allowing the visualization of three-dimensional (3D) geometries which can be used to simulate the global and ...
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A recurrent neural network-accelerated multi-scale model for elasto-plastic heterogeneous materials subjected to random cyclic and non-proportional loading paths
... kj , with i = 1, ..., N ; k = 1, ..., n i−1 and j = 1, ..., n i , and bias w 0 i j , with i = 1, ..., N and j = 1, ..., n i , see the notations in Fig. 2(b), are obtained through a so-called training of the NNW. However, ...
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Heterogeneous materials with evolving microstructure : constitutive modeling, numerical implementation and applications.
... most materials of interest consist of random microstructures, whose physical properties vary not only with position x, but also depend upon a parameter α, where α is a member of a sample space A, over which a ...
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On the stored and dissipated energies in heterogeneous rate-independent materials. Application to a quasi-brittle energetic material under tensile loading.
... This approach is attractive in that, in the dilute crack density limit, it allows one to employ fracture mechanics tools to derive micro-fields from the geometry of each crack, the elastic constants of the uncracked ...
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How to regulate heterogeneous hospitals ?
... frontier (SCF) approach gives an empirical support to this conjecture (see section 5.3).. In addition, the payment P 1 allows for permanent unobserved hospital heterogeneity h , assuming[r] ...
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Querying heterogeneous document stores
... Our approach is designed to resolve these issues. It lets the user query a collection using one schema of some documents, and our system transparently re- writes the user query to take into account all existing schemas. ...
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Scheduling on power-heterogeneous processors
... We consider the problem of scheduling a set of jobs, each one specified by its release date, its deadline and its processing volume, on a set of heterogeneous speed- scalable processors, where the ...
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