唐世斌
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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.