XFEM Modelling and Experimental Observations of Foam Concrete Beam Externally-Bonded with KFRP Sheet
| Autor: | Malik Ridwan Maulana, Sugiman Sugiman, Hilton Ahmad, Zainorizuan Mohd Jaini, Hazrina Mansor |
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| Jazyk: | angličtina |
| Rok vydání: | 2022 |
| Předmět: | |
| Zdroj: | Latin American Journal of Solids and Structures, Volume: 19, Issue: 6, Article number: e460, Published: 12 SEP 2022 Latin American Journal of Solids and Structures v.19 n.6 2022 Latin American journal of solids and structures Associação Brasileira de Engenharia e Ciências Mecânicas (ABCM) instacron:ABCM |
| Popis: | This paper investigates the effect of KFRP composite sheets as a strengthening material in improving the load-carrying resistance of lightweight foam concrete beams using a FEA modelling framework. The study employed three parametric strengthening schemes (i.e., KFRP length, woven architecture types and KFRP thickness). Twenty-seven beam specimens were tested, and respective failure modes and ultimate load at failure were discussed. All the strengthened beam specimens failed mostly in shear mode and, to a lesser extent, in FRP fracture. Despite the absence of de-bonding failure, improvement of strengthening using KFRP sheet technique was exhibited. Later, Extended Finite Element Method (XFEM) Modelling was incorporated following failure mode exhibited. Strength predictions incorporating the traction-separation relationship using XFEM techniques. Validation work with experimental datasets showed good agreements with average discrepancies of less than 10%. The numerical approach can be used as a strength prediction tool in concrete beams with externally bonded FRPs. |
| Databáze: | OpenAIRE |
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