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  1. Book ; Conference proceedings: Multiscale modeling of heterogenous materials

    Cazacu, Oana

    from microstructure to macro-scale properties ; [selected papers from the invited lectures presented during the 1st US-France Symposium held 28 - 30 March 2007 at the University of Florida in Shalimar, FL]

    2008  

    Institution International Center for Applied Computational Mechanics
    US France Symposium on Advances in Bridging Scales in Computation - From Microstructure to Macro-Scale Properties of Heterogeneous Materials
    Event/congress US-France Symposium on Advances in Bridging Scales in Computation - From Microstructure to Macro-Scale Properties of Heterogeneous Materials (1, 2007.03.28-30, ShalimarFla.)
    Author's details ed. by Oana Cazacu
    Keywords Inhomogeneous materials/Mathematical models
    Language English
    Size XV, 343 S, Ill., graph. Darst, 24 cm
    Publisher Wiley ; ISTE
    Publishing place Hoboken, NJ ; London
    Document type Book ; Conference proceedings
    Note Literaturangaben ; Symposium organized under the auspices of the International Center for Applied Computational Mechanics (ICACM)
    ISBN 1848210477 ; 9781848210479
    Database Library catalogue of the German National Library of Science and Technology (TIB), Hannover

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    Inter-library loan at ZB MED

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  2. Book ; Online: Unusual plastic deformation and damage features in Titanium

    Revil-Baudard, Benoit / Cazacu, Oana / Flater, Philip / Chandola, Nitin / Alves, J. L.

    experimental tests and constitutive modeling

    2015  

    Abstract: In this paper, we present an experimental study on plastic deformation and damage of polycrystalline pure Ti, as well as modeling of the observed behavior. From the mechanical characterization data, it can be concluded that the material displays ... ...

    Abstract In this paper, we present an experimental study on plastic deformation and damage of polycrystalline pure Ti, as well as modeling of the observed behavior. From the mechanical characterization data, it can be concluded that the material displays anisotropy and tension-compression asymmetry. As concerns damage, the X-ray tomography measurements conducted reveal that damage distribution and evolution in this HCP Ti material is markedly different than in a typical FCC material such as copper. Stewart and Cazacu (2011) anisotropic elastic/plastic damage model is used to describe the behavior. All material parameters involved in this model have a clear physical significance, being related to plastic properties, and are determined based on very few simple mechanical tests. It is shown that this model predicts correctly the anisotropy in plastic deformation, and its strong influence on damage distribution and damage accumulation in Ti. Specifically, for a smooth axisymmetric specimen subject to uniaxial tension, damage initiates at the center of the specimen and is diffuse; the level of damage close to failure is very low. On the other hand, for a notched specimen subject to the same loading, the model predicts that damage initiates at the outer surface of the specimen, and further grows from the outer surface to the center of the specimen, which corroborates with the in-situ tomography data.
    Keywords Condensed Matter - Materials Science ; 74CXX ; 74RXX
    Subject code 621
    Publishing date 2015-05-17
    Publishing country us
    Document type Book ; Online
    Database BASE - Bielefeld Academic Search Engine (life sciences selection)

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    Inter-library loan at ZB MED

    Your chosen title can be delivered directly to ZB MED Cologne location if you are registered as a user at ZB MED Cologne.

  3. Article ; Online: Analysis of ESAFORM 2021 cup drawing benchmark of an Al alloy, critical factors for accuracy and efficiency of FE simulations.

    Habraken, Anne Marie / Aksen, Toros Arda / Alves, José L / Amaral, Rui L / Betaieb, Ehssen / Chandola, Nitin / Corallo, Luca / Cruz, Daniel J / Duchêne, Laurent / Engel, Bernd / Esener, Emre / Firat, Mehmet / Frohn-Sörensen, Peter / Galán-López, Jesús / Ghiabakloo, Hadi / Kestens, Leo A I / Lian, Junhe / Lingam, Rakesh / Liu, Wencheng /
    Ma, Jun / Menezes, Luís F / Nguyen-Minh, Tuan / Miranda, Sara S / Neto, Diogo M / Pereira, André F G / Prates, Pedro A / Reuter, Jonas / Revil-Baudard, Benoit / Rojas-Ulloa, Carlos / Sener, Bora / Shen, Fuhui / Van Bael, Albert / Verleysen, Patricia / Barlat, Frederic / Cazacu, Oana / Kuwabara, Toshihiko / Lopes, Augusto / Oliveira, Marta C / Santos, Abel D / Vincze, Gabriela

    International journal of material forming

    2022  Volume 15, Issue 5, Page(s) 61

    Abstract: This article details the ESAFORM Benchmark 2021. The deep drawing cup of a 1 mm thick, AA 6016-T4 sheet with a strong cube texture was simulated by 11 teams relying on phenomenological or crystal plasticity approaches, using commercial or self-developed ... ...

    Abstract This article details the ESAFORM Benchmark 2021. The deep drawing cup of a 1 mm thick, AA 6016-T4 sheet with a strong cube texture was simulated by 11 teams relying on phenomenological or crystal plasticity approaches, using commercial or self-developed Finite Element (FE) codes, with solid, continuum or classical shell elements and different contact models. The material characterization (tensile tests, biaxial tensile tests, monotonic and reverse shear tests, EBSD measurements) and the cup forming steps were performed with care (redundancy of measurements). The Benchmark organizers identified some constitutive laws but each team could perform its own identification. The methodology to reach material data is systematically described as well as the final data set. The ability of the constitutive law and of the FE model to predict Lankford and yield stress in different directions is verified. Then, the simulation results such as the earing (number and average height and amplitude), the punch force evolution and thickness in the cup wall are evaluated and analysed. The CPU time, the manpower for each step as well as the required tests versus the final prediction accuracy of more than 20 FE simulations are commented. The article aims to guide students and engineers in their choice of a constitutive law (yield locus, hardening law or plasticity approach) and data set used in the identification, without neglecting the other FE features, such as software, explicit or implicit strategy, element type and contact model.
    Language English
    Publishing date 2022-07-15
    Publishing country France
    Document type Journal Article
    ZDB-ID 2423930-6
    ISSN 1960-6214 ; 1960-6206
    ISSN (online) 1960-6214
    ISSN 1960-6206
    DOI 10.1007/s12289-022-01672-w
    Database MEDical Literature Analysis and Retrieval System OnLINE

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