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Wyszukujesz frazę "Ambroziak, A.A." wg kryterium: Autor

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    Wyświetlanie 1-13 z 13
    Tytuł:
    Membrane-hanging roof analysis: an example
    Autorzy:
    Ambroziak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1955335.pdf
    Data publikacji:
    2006
    Wydawca:
    Politechnika Gdańska
    Tematy:
    membrane structures
    FEM
    Forest Opera
    MSC.MARC
    Opis:
    The paper presents an analysis of a membrane-hanging roof subjected to climatic loadings. Discussion of the fundamental equations of the dense net model, used to describe the behaviour of coated woven fabric, and the concept of the climatic loadings is included.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2006, 10, 3; 267-273
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Analysis of non-linear elastic material properties of PVC-coated Panama fabric
    Autorzy:
    Ambroziak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1964175.pdf
    Data publikacji:
    2005
    Wydawca:
    Politechnika Gdańska
    Tematy:
    non-linear elastic modeling
    PVC coated fabric
    MSC.MARC
    Opis:
    The aim of the present paper is to propose a method of laboratory tests to determine non-linear elastic properties of coated Panama fabric. The material parameters are specified on the basis of uniaxial tensile tests in the warp and weft directions. Techniques based on the least squares' methods are used in the determination process. Reduction concepts of the strength parameters are proposed in order to take into account rheological effects in the fabric. Numerical applications to MSC.Marc, a commercial program, are presented. A user-defined HOOKLW subroutine is used to introduce the non-linear elastic properties of the PVC-coated fabric into the MSC.Marc system.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2005, 9, 2; 167-178
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical modeling of elasto-viscoplastic Chaboche constitutive equations using MSC.Marc
    Autorzy:
    Ambroziak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1964194.pdf
    Data publikacji:
    2005
    Wydawca:
    Politechnika Gdańska
    Tematy:
    elasto-viscoplastic constitutive models
    damage
    finite element method
    Opis:
    The aim of the present paper is to propose a special kind of finite element procedure for dynamic and static analysis of civil engineering structures (e.g. trusses, beams, shells and spatial structures) including elasto-viscoplastic models. The Chaboche model with damage has been chosen from the wide range of available elasto-viscoplastic constitutive models for numerical calculations. The main advantage of the presented approach is the possibility of interference in subroutines and adjusting them to a particular problem (e.g. altering the form of constitutive equations). A user-defined UVSCPL subroutine has been proposed to introduce the elasto-viscoplastic model into the MSC.Marc system.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2005, 9, 2; 157-166
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Application of the Murnaghan model in analysis of non-linear elastic material properties of PVC-coated fabric
    Autorzy:
    Ambroziak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1955338.pdf
    Data publikacji:
    2006
    Wydawca:
    Politechnika Gdańska
    Tematy:
    non-linear elastic modelling
    Murnagham model
    PVC coated fabric
    Opis:
    The aim of the present paper is to propose a method of laboratory tests necessary for identification of non-linear elastic properties of the PVC-coated Panama fabric often used for hanging roofs. Two methods of describing the fabric's non-linear behaviour are investigated: piecewise linear relations between stress and strain are assumed and the Murnaghan model of solid behaviour is applied. The material parameters are specified on the basis of uniaxial constant strain rate tensile tests in the warp and weft directions. Techniques based on the least squares methods are applied in the identification process.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2006, 10, 3; 253-265
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Geometrically non-linear analysis of shells
    Autorzy:
    Ambroziak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1955341.pdf
    Data publikacji:
    2022-01-27
    Wydawca:
    Politechnika Gdańska
    Tematy:
    FEM
    locking
    shell
    geometric non-linear
    Opis:
    The work's aim has been to verify the suitability of commercial engineering software for geometrically non-linear analysis of shell structures. The paper deals with static, geomet-rically non-linear analysis of shells made of isotropic materials. The Finite Element Method (FEM) has been chosen to solve the problem. The results of the ROBOBAT Ro-bot Millennium v. 19.0 and MSC.Marc v. 2005r2 commercial software are compared with the literature results.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2006, 10, 3; 239-251
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Numerical modelling of elasto-viscoplastic Bodner-Partom constitutive equations
    Autorzy:
    Ambroziak, A.
    Powiązania:
    https://bibliotekanauki.pl/articles/1964145.pdf
    Data publikacji:
    2005
    Wydawca:
    Politechnika Gdańska
    Tematy:
    elasto-viscoplastic constitutive model
    Bodner-Partom
    FEM
    Opis:
    The aim of the paper is to propose an FE procedure for static and dynamic nonlinear analysis including elasto-viscoplastic constitutive equations of the Bodner-Partom model. Basic equations of the constitutive model are given with the flow graph used in the FE procedure. The proposed procedure has been applied in the MSC.Marc commercial system with a user-defined UVSCPL subroutine that enables application to a wide range of varied finite elements. A number of simple problems of static and dynamic analysis are presented to show the accuracy of this approach. The numerical simulations are compared with experiments to validate the proposed FE procedure.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2005, 9, 4; 461-473
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Survey of modern trends in analysis of continuum damage mechanics
    Autorzy:
    Ambroziak, A.
    Kłosowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1933193.pdf
    Data publikacji:
    2006
    Wydawca:
    Politechnika Gdańska
    Tematy:
    continuum damage mechanics
    ductile damage
    fatigue damage
    viscoplasticity
    Opis:
    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 impor-tant books and papers. Basic equations to introduce the isotropic model in the framework of thermodynamics are given in a form easily applicable in numerical symulations.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2006, 10, 4; 437-454
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    A four-node 3d isoparametric membrane element
    Autorzy:
    Ambroziak, A.
    Kłosowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1955353.pdf
    Data publikacji:
    2006
    Wydawca:
    Politechnika Gdańska
    Tematy:
    isoparametric four-node membrane element
    FEM
    membranes
    Opis:
    The paper presents a non-linear finite element procedure for analysis of membrane structures. A four-node quadrilateral finite element is formulated to represent a general curved elastic geometrically non-linear surface. The described isoparametric element is CO-continuous, of constant thickness, and assumes a plane stress criterion. A simple numerical example is presented as an application of the described theory.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2006, 10, 1; 35-47
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Example of tension fabric structure analysis
    Autorzy:
    Ambroziak, A.
    Kłosowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1943188.pdf
    Data publikacji:
    2010
    Wydawca:
    Politechnika Gdańska
    Tematy:
    architectural fabric
    material modeling
    Murnaghan model
    Opis:
    The aim of this work is to examine two variants of non-linear strain-stress relations accepted for a description of the architectural fabric. A discussion on the fundamental equations of the dense net model used in the description of the coated woven fabric behaviour is presented. An analysis of tensile fabric structures subjected to dead load and initial pretension is described.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2010, 14, 1-2; 5-14
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    The elasto- viscoplastic Chaboche model
    Autorzy:
    Ambroziak, A.
    Kłosowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1955352.pdf
    Data publikacji:
    2006
    Wydawca:
    Politechnika Gdańska
    Tematy:
    elasto-viscoplastic
    Chaboche model
    constitutive model
    Opis:
    The elasto-viseoplastie constitutive equations of the Chaboehe model [I] have been developed and modified many times. The aim of the present paper is to present the existing Chaboche model variants and describe its scientific and engineering applications. A compact review of literature on these applications is given, focussed on publications offering a wider and more comprehensive view of the elasto-viscoplastic Chaboche model. The article is an introduction to a comprehensive investigation of the elasto-viscoplastic Chaboche model.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2006, 10, 1; 49-61
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Determining the viscoplastic parameters of rubber-toughened plastics
    Autorzy:
    Ambroziak, A.
    Kłosowski, P.
    Powiązania:
    https://bibliotekanauki.pl/articles/1933187.pdf
    Data publikacji:
    2008
    Wydawca:
    Politechnika Gdańska
    Tematy:
    viscoplasticity
    determination
    Bodner-Partom
    tensile test
    propylene-ethylene copolymer
    Opis:
    This paper describes the material parameter determination procedure for the elasto-viscoplastic Bodner-Partom model. A set of viscoplastic parameters is determined for rubber-toughened propylene-ethylene copolymer, and is used to numerical simulations of the material behavior under different strain rate deformations. The evaluation of material parameters for Bodner-Partom constitutive equations is carried out using tensile tests.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2008, 12, 1-2; 35-43
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Elasto-viscoplastic properties of AA2017 aluminium alloy
    Autorzy:
    Ambroziak, A.
    Kłosowski, P.
    Pyrzowski, L.
    Powiązania:
    https://bibliotekanauki.pl/articles/1934041.pdf
    Data publikacji:
    2011
    Wydawca:
    Politechnika Gdańska
    Tematy:
    AA2017
    viscoplasticity
    Bodner-Partom
    tensile tests
    Opis:
    This paper describes a procedure for the identification of material parameters for the elasto-viscoplastic Bodner-Partom model. A set of viscoplastic parameters is identified for AA2017 aluminium alloy. The evaluation of material parameters for the Bodner-Partom constitutive equations is carried out using tensile tests. Numerical simulations of material behaviour during constant strain-rate tests are compared with direct uniaxial tensile experiments. A review of the models applied to concisely describe aluminium alloy is also given.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2011, 15, 1; 5-20
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
    Tytuł:
    Implementation of continuum damage in elasto- viscoplastic constitutive equations
    Autorzy:
    Ambroziak, A.
    Kłosowski, P.
    Nowicki, M.
    Schmidt, R.
    Powiązania:
    https://bibliotekanauki.pl/articles/1955210.pdf
    Data publikacji:
    2006
    Wydawca:
    Politechnika Gdańska
    Tematy:
    elasto-viscoplastic constitutive models
    damage
    finite element method
    Opis:
    Modelling of the continuum damage framework, is developed for application in the elasto-viscoplastic Chaboche constitutive model. A brief description of the basic variant of the Chaboche model equations is given, followed by a discussion of the most important assumptions necessary to obtain evolution of the continuum damage model and its appli-cation to the open FE commercial program. A consistent presentation of the two proposed approaches is followed by numerical examples.
    Źródło:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk; 2006, 10, 2; 207-220
    1428-6394
    Pojawia się w:
    TASK Quarterly. Scientific Bulletin of Academic Computer Centre in Gdansk
    Dostawca treści:
    Biblioteka Nauki
    Artykuł
      Wyświetlanie 1-13 z 13

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