Abstract
A novel non-linear truss finite element specifically conceived to study an FRCM reinforcing package is presented. FRCM is modelled considering separately the central elastic fiber grid and the two upper and lower inelastic matrix layers; matrix and fiber are considered in a monoaxial state of stress, mutually exchanging shear stresses at the interface. The interface constitutive relationship assumed is trilinear with softening and residual strength; the element is thus constituted by three trusses (one elastic and two inelastic) linked with shear springs. The internal matrix layer exchanges also tangential stresses between reinforcement and substrate by means of elastic shear springs. The finite element is therefore characterized by 8 DOF, namely the longitudinal displacements of the three layers of the FRCM package plus that of the substrate, evaluated at the extremes of the element. The finite element performance is successfully validated against some available experimental datasets, relying into different FRCM strengthening packages bonded to rigid substrates and subjected to single lap shear tests.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
Bertolesi, E., Fagone, M., Rotunno, T., Grande, E., Milani, G.: Experimental characterization of the textile-to-mortar bond through distributed optical sensors. Constr. Build. Mater. 313, 126640 (2022)
Rotunno, T., Fagone, M., Grande, E., Milani, G.: FRCM-to-masonry bonding behaviour in the case of curved surfaces: experimental investigation. Compos. Struct. 313, 116913 (2023)
Pingaro, N., Calabrese, A.S., Milani, G., Poggi, C.: Debonding sawtooth analytical model and FE implementation with in-house experimental validation for SRG-strengthened joints subjected to direct shear. Compos. Struct. 319, 117113 (2023)
Milani, G.: Semi-analytical mechanical model for FRCM-to-substrate shear bond tests. Compos. B Eng. 266, 110983 (2023)
Grande, E., Fagone, M., Rotunno, T., Milani, G.: Modeling of shear-lap tests of flat and curved masonry specimens strengthened by FRCM. Structures 52, 437–448 (2023)
Milani, G.: Simple model with in-parallel elasto-fragile trusses to characterize debonding on FRP-reinforced flat substrates. Compos. Struct. 296, 115874 (2022)
Pari, M., Swart, W., Van Gijzen, M.B., Hendricks, M.A.N., Rots, J.G.: Two solution strategies to improve the computational performance of sequentially linear analysis for quasi-brittle structures. Int. J. Numer. Meth. Eng. 121, 2128–2146 (2020)
Pari, M., Hendricks, M.A.N., Rots, J.G.: Non-proportional loading in sequentially linear solution procedures for quasi-brittle fracture: a comparison and perspective on the mechanism of stress redistribution. Eng. Fract. Mech. 230, 106960 (2020)
Pari, M., Van de Graaf, A.V., Hendricks, M.A.N., Rots, J.G.: A multi-surface interface model for sequentially linear methods to analyse masonry structures. Eng. Struct. 238, 112123 (2021)
Yu, C., Hoogenboom, P., Rots, J.G.: Extension of incremental sequentially linear analysis to geometrical non-linearity with indirect displacement control. Eng. Struct. 229, 111562 (2021)
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2024 The Author(s), under exclusive license to Springer Nature Switzerland AG
About this paper
Cite this paper
Pingaro, N., Milani, G. (2024). Simple Truss Finite Element to Model FRCM Strengthened Specimens in Single Lap Shear Tests. In: Benaissa, B., Capozucca, R., Khatir, S., Milani, G. (eds) Proceedings of the International Conference of Steel and Composite for Engineering Structures. ICSCES 2023. Lecture Notes in Civil Engineering, vol 486. Springer, Cham. https://doi.org/10.1007/978-3-031-57224-1_1
Download citation
DOI: https://doi.org/10.1007/978-3-031-57224-1_1
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-031-57223-4
Online ISBN: 978-3-031-57224-1
eBook Packages: EngineeringEngineering (R0)