摘要
为研究碳纤维布加固混凝土板的抗爆能力,用混凝土HJC动力本构模型,建立了混凝土板、炸药及考虑空气介质影响的流固耦合有限元计算模型。用动力分析软件ANSYS/LS-DYNA,对在爆炸荷载作用下未粘贴碳纤维布以及用碳纤维布加固下的混凝土板的跨中位移及受力性能进行了数值分析。研究结果表明:混凝土板用碳纤维布粘贴加固后抗爆炸冲击能力明显提高,且碳纤维布粘贴在一定层数以内时,其抗爆炸冲击能力与加固层数成正比,继续增加层数时抗爆能力提高不明显,甚至有相反的变化趋势。
To investigate the explosive resistance of the concrete plate strengthened by adhering CFRP, the HJC concrete dynamic constitutive model is introduced and a fluid-solid coupling finite element model considering concrete plate, dynamite and air influence is established, and numerical simulations on the cross-displacement and the mechanical behavior of the concrete plate with/without CFRF under explosive loading are carried out with ANSYS/LS-DYNA. The results show that the explosive resistance capability of the concrete plate CFRP adhered is improved greatly, which gets in direction propotion with the number of carbon fiber layers within a region, while slightly heightened or weakened with the sequent layer adding.
出处
《应用力学学报》
EI
CAS
CSCD
北大核心
2008年第1期150-153,共4页
Chinese Journal of Applied Mechanics
关键词
爆炸力学
混凝土
碳纤维布加固
HJC模型
有限元
抗爆能力
explosion mechanics, concrete, strengthened with carbon fiber reinforced polymer(CFRP), HJC model, finite element, explosion resistance capability.
