Three-dimensional finite element modeling of inorganic-matrix composite materials using a mesoscale approach

Mazzucco, Gianluca; D’Antino, Tommaso; Pellegrino, Carlo; Salomoni, Valentina

doi:10.1016/j.compositesb.2017.12.057

Cited by 33 publications

(38 citation statements)

References 44 publications

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“…While the carbon and PBO textiles have longitudinal and transversal yarns not threaded together, the AR-glass textile was obtained with the leno wave technique [31], where the transversal (weft) yarns pass through longitudinal (warp) yarns ( Figure 1). Therefore, only in the AR-glass FRCM the transversal yarns may contribute to the composite capacity when the load is applied to the longitudinal yarns [32].…”

Section: Experimental Programmentioning

confidence: 99%

Study of the Bond Capacity of FRCM- and SRG-Masonry Joints

2021

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Fiber-reinforced cementitious matrix (FRCM) and steel-reinforced grout (SRG) have been increasingly applied as externally bonded reinforcement to masonry members in the last few years. Unlike fiber-reinforced polymer (FRP), FRCM and SRG have good performance when exposed to (relatively) high temperature and good compatibility with inorganic substrates, and they can be applied to wet surfaces and at (reasonably) low temperatures. Although numerous studies investigated the mechanical properties and bond performance of various FRCM and SRG, new composites have been developed recently, and their performance still needs to be assessed. In this study, the bond behavior of three FRCM composites and one SRG composite applied to a masonry substrate is investigated. Sixteen single-lap direct shear tests (four tests for each composite) are performed. The FRCM studied comprised one layer of carbon, PBO (polyparaphenylene benzobisoxazole), or alkali-resistant (AR)-glass bidirectional textile embedded within two cement-based matrices. The SRG composite comprised one layer of a unidirectional stainless-steel cord textile embedded within a lime-based matrix. The results show a peculiar bond behavior and failure mode for each composite. Based on these results, the behavior of the carbon and PBO FRCM is modeled solving the bond differential equation with a trilinear cohesive material law (CML).

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Section: Experimental Programmentioning

confidence: 99%

Study of the Bond Capacity of FRCM- and SRG-Masonry Joints

2021

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“…In the literature, two different approaches can be used for modeling the textile grid in the FE simulations: the first approach is the detailed modeling of the geometry of the grid, assuming perfect bond in the contact points at the intersections between orthogonal yarns; the second approach consists in a simplified modeling of the complex geometry of the grid, the latter being assumed as an equivalent shell element. There are several examples in the literature of detailed modeling (among others Mazzucco et al, 2018).…”

Section: Simplified Micro-modeling Approach General Featuresmentioning

confidence: 99%

“…The damaged response is simulated according to several studies in the literature. In particular, Mazzucco et al (2018) suggest the following expressions for defining the compressive and tensile damage variable, named d c and d t , respectively.…”

Section: Traction Compressionmentioning

confidence: 99%

“…In Eqs 4a and 4b the coefficients A c , B c , λ c , A t , B t , λ t , are calibrated through laboratory tests and the values adopted are those suggested by Mazzucco et al (2018) and reported in Table 2.…”

Section: Traction Compressionmentioning

confidence: 99%

“…1 are equal to zero, meaning that only tangential cohesive constraints are enforced; the normal separations are not constrained and the cohesive constraint is restricted to act along the tangential direction only. In order to describe the post-elastic damaged behavior of the interface represented in Figure 2, a damage variable D is introduced, assuming the rate of the damage suggested in the literature (Mazzucco et al, 2018) and the relationship between shear stress and inelastic slip reported qualitatively in Figure 8. The first linear branch is ruled by the stiffness K. The second linear branch is derived assuming the value of the total fracture energy G 1 + G 2 and the maximum shear stress reached at the interface level τ max .…”

Section: Traction Compressionmentioning

confidence: 99%

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Constitutive Numerical Model of FRCM Strips Under Traction

Monaco

Minafò

D’Anna

et al. 2020

Front. Built Environ.

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In this paper, the tensile behavior of Fiber Reinforced Cementitious Matrix (FRCM) strips is investigated through Finite Element (FE) models. The most adopted numerical modeling approaches for the simulation of the fiber-matrix interface law are described. Among them, the cohesive model is then used for the generation of FE models which are able to simulate the response under traction of FRCM strips tested in laboratory whose results are available in the technical literature. Tests on basalt, PBO and carbon coated FRCM specimens are taken into account also considering different mechanical ratios of the textile reinforcement. The comparison between FE results and experimental data allows validating the adopted numerical modeling approach. Finally, some considerations are provided on the effects of the fiber fabric mechanical ratio and the strength and stiffness of the interface on the tensile capacity of the FRCM strips.

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