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    Constitutive Model of Aluminum under Variable-Amplitude Cyclic Loading and Its Application to Buckling-Restrained Braces

    Source: Journal of Materials in Civil Engineering:;2018:;Volume ( 030 ):;issue: 003
    Author:
    Xiang Ping;Shi Mingzhe;Jia Liang-Jiu;Wu Minger;Wang Chun-Lin
    DOI: 10.1061/(ASCE)MT.1943-5533.0002183
    Publisher: American Society of Civil Engineers
    Abstract: Aluminum has been increasingly used in space, building, and other structures owing to its light weight and high durability. The cyclic plasticity of aluminum is of great importance for the design of aluminum structures in regions with high seismic risk, where extremely large plastic strain loading is involved. For seismic loading, strain amplitudes can vary in a wide range, which makes it necessary to calibrate the plasticity model at the full strain range. This paper aims to present a straightforward approach to accurately evaluating hysteretic properties of aluminum material and structures under variable-amplitude cyclic loading within the full strain range until fracture. In this paper, a new method is proposed to calibrate the generalized Armstrong-Frederick model at the full strain range using only representative mechanical variables of structural aluminum such as yield strength and tensile strength. The newly proposed method is validated at both the material and member levels, respectively, through quasistatic cyclic experiments on double-edge notched specimens and aluminum buckling restrained braces. The validation results show that the proposed method can well describe the cyclic plasticity of aluminum members at the full strain range.
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      Constitutive Model of Aluminum under Variable-Amplitude Cyclic Loading and Its Application to Buckling-Restrained Braces

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    contributor authorXiang Ping;Shi Mingzhe;Jia Liang-Jiu;Wu Minger;Wang Chun-Lin
    date accessioned2019-02-26T07:31:11Z
    date available2019-02-26T07:31:11Z
    date issued2018
    identifier other%28ASCE%29MT.1943-5533.0002183.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4247551
    description abstractAluminum has been increasingly used in space, building, and other structures owing to its light weight and high durability. The cyclic plasticity of aluminum is of great importance for the design of aluminum structures in regions with high seismic risk, where extremely large plastic strain loading is involved. For seismic loading, strain amplitudes can vary in a wide range, which makes it necessary to calibrate the plasticity model at the full strain range. This paper aims to present a straightforward approach to accurately evaluating hysteretic properties of aluminum material and structures under variable-amplitude cyclic loading within the full strain range until fracture. In this paper, a new method is proposed to calibrate the generalized Armstrong-Frederick model at the full strain range using only representative mechanical variables of structural aluminum such as yield strength and tensile strength. The newly proposed method is validated at both the material and member levels, respectively, through quasistatic cyclic experiments on double-edge notched specimens and aluminum buckling restrained braces. The validation results show that the proposed method can well describe the cyclic plasticity of aluminum members at the full strain range.
    publisherAmerican Society of Civil Engineers
    titleConstitutive Model of Aluminum under Variable-Amplitude Cyclic Loading and Its Application to Buckling-Restrained Braces
    typeJournal Paper
    journal volume30
    journal issue3
    journal titleJournal of Materials in Civil Engineering
    identifier doi10.1061/(ASCE)MT.1943-5533.0002183
    page4017304
    treeJournal of Materials in Civil Engineering:;2018:;Volume ( 030 ):;issue: 003
    contenttypeFulltext
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