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    唐世斌

    • 教授     博士生导师   硕士生导师
    • 性别:男
    • 毕业院校:大连理工大学
    • 学位:博士
    • 所在单位:土木工程系
    • 学科:岩土工程. 计算力学. 桥梁与隧道工程. 水工结构工程
    • 电子邮箱:tang_shibin@dlut.edu.cn

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    Crack propagation and coalescence in quasi-brittle materials at high temperatures

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    论文类型:期刊论文

    发表时间:2015-01-01

    发表刊物:ENGINEERING FRACTURE MECHANICS

    收录刊物:SCIE、EI

    卷号:134

    页面范围:404-432

    ISSN号:0013-7944

    关键字:Thermo-mechanic-damage model; Mesoscopic level; Statistical distribution; Failure process

    摘要:A numerical model allowing for the thermo-mechanical analysis of quasi-brittle materials (concrete structures) at high temperatures via the finite element method and damage mechanics is presented. It incorporates a damage constitutive law to capture the initiation, propagation, coalescence and the interaction of cracks as a natural outcome of the calculated material response. Furthermore, the degradation of the mechanical properties due to temperature is estimated using a transient thermo-damage model. The numerical results obtained from the proposed model correspond well with those obtained in experimental tests performed by other authors on concrete specimens at high temperatures. (C) 2015 Elsevier Ltd. All rights reserved.