Micromechanical modeling of the constitutive response of FRCM composites

被引:20
|
作者
Nerilli, Francesca [1 ]
Marfia, Sonia [2 ]
Sacco, Elio [3 ]
机构
[1] Univ Niccola Cusano Telemat Roma, Via Don C Gnocchi 13, I-00166 Rome, Italy
[2] Univ Roma Tre, Dipartimento Ingn, Via Vito Volterra 62, I-00146 Rome, Italy
[3] Univ Napoli Federico II, Dipartimento Strutture Ingn & Architettura, Via Claudio 21, I-80125 Naples, Italy
关键词
FRCM; Micromechanics; Nonlinear interface; TEXTILE REINFORCED-CONCRETE; COHESIVE MATERIAL LAW; MECHANICAL-PROPERTIES; TENSILE BEHAVIOR; BOND BEHAVIOR; SYSTEMS; FRP; SIMULATION; STRENGTH;
D O I
10.1016/j.conbuildmat.2019.117539
中图分类号
TU [建筑科学];
学科分类号
0813 ;
摘要
In this paper, the tensile and shear constitutive behavior of Fiber Reinforced Cementitious Matrix (FRCM) composites is addressed. A nonlinear finite-element computational approach is developed, by accounting for the micromechanical mechanisms via the introduction of interface elements inside and between the FRCM constituents, i.e. fibers and mortar. The damage, the friction and the unilateral contact are considered for reproducing the mortar cracking and the slippage between the fibers and the mortar. The numerical approach is illustrated and it is validated with an available experimental result, highlighting the effectiveness of such proposed modeling approach for reproducing the constitutive tensile behavior of FRCM materials. Finally, the shear behavior is investigated, also considering cyclic loading patterns under different compressive load levels. (C) 2019 Elsevier Ltd. All rights reserved.
引用
收藏
页数:16
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