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    A Dynamic Elastoplastic Model of Concrete Based on a Modeling Method with Environmental Factors as Constitutive Variables

    Source: Journal of Engineering Mechanics:;2023:;Volume ( 149 ):;issue: 012::page 04023102-1
    Author:
    Dechun Lu
    ,
    Fanping Meng
    ,
    Xin Zhou
    ,
    Yuhang Zhuo
    ,
    Zhiwei Gao
    ,
    Xiuli Du
    DOI: 10.1061/JENMDT.EMENG-7206
    Publisher: ASCE
    Abstract: This paper develops a modeling method with an incremental stress–strain–environment constitutive model to predict the change in the plastic mechanical behavior of concrete caused by environmental action. The model regards the environmental factor as a constitutive variable, similar to stress and strain. The yield condition of the model is a function of stress, the plastic internal variable, and the environmental variable. The loading–unloading criterion is established in the space constructed by the strain and the environmental variable to determine the contribution of mechanical loads and environmental factors to plastic deformation. By considering the strain rate as an environmental factor and applying the proposed method, a stress–strain–strain rate constitutive model of concrete is developed to describe the plastic flow caused by the combined action of stress and strain rate. In addition, constant- and variable-strain rate loading tests are performed to evaluate the performance of the established model. In particular, the model’s capabilities are further highlighted by comparing the simulation results of the dynamic stress–strain model and the proposed model under loading conditions with rapidly decreasing strain rates.
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      A Dynamic Elastoplastic Model of Concrete Based on a Modeling Method with Environmental Factors as Constitutive Variables

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    http://yetl.yabesh.ir/yetl1/handle/yetl/4296029
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    contributor authorDechun Lu
    contributor authorFanping Meng
    contributor authorXin Zhou
    contributor authorYuhang Zhuo
    contributor authorZhiwei Gao
    contributor authorXiuli Du
    date accessioned2024-04-27T20:49:10Z
    date available2024-04-27T20:49:10Z
    date issued2023/12/01
    identifier other10.1061-JENMDT.EMENG-7206.pdf
    identifier urihttp://yetl.yabesh.ir/yetl1/handle/yetl/4296029
    description abstractThis paper develops a modeling method with an incremental stress–strain–environment constitutive model to predict the change in the plastic mechanical behavior of concrete caused by environmental action. The model regards the environmental factor as a constitutive variable, similar to stress and strain. The yield condition of the model is a function of stress, the plastic internal variable, and the environmental variable. The loading–unloading criterion is established in the space constructed by the strain and the environmental variable to determine the contribution of mechanical loads and environmental factors to plastic deformation. By considering the strain rate as an environmental factor and applying the proposed method, a stress–strain–strain rate constitutive model of concrete is developed to describe the plastic flow caused by the combined action of stress and strain rate. In addition, constant- and variable-strain rate loading tests are performed to evaluate the performance of the established model. In particular, the model’s capabilities are further highlighted by comparing the simulation results of the dynamic stress–strain model and the proposed model under loading conditions with rapidly decreasing strain rates.
    publisherASCE
    titleA Dynamic Elastoplastic Model of Concrete Based on a Modeling Method with Environmental Factors as Constitutive Variables
    typeJournal Article
    journal volume149
    journal issue12
    journal titleJournal of Engineering Mechanics
    identifier doi10.1061/JENMDT.EMENG-7206
    journal fristpage04023102-1
    journal lastpage04023102-19
    page19
    treeJournal of Engineering Mechanics:;2023:;Volume ( 149 ):;issue: 012
    contenttypeFulltext
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