| 1. |
- Mobaraki, H. A., et al.
(författare)
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Dynamic analysis of a laminated composite plate coupled with a piezoelectric energy harvester and traversed by a moving vehicle
- 2022
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Ingår i: Mechanics of Advanced Materials and Structures. - : Informa UK Limited. - 1537-6532 .- 1537-6494. ; 29:27, s. 6835-6853
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Tidskriftsartikel (refereegranskat)abstract
- The dynamic analysis is carried out of a laminated composite plate coupled with a piezoelectric energy harvester under the action of a moving vehicle. The finite element method along with Newmark’s method are applied to solve the discretized equations. Results are presented for two main cases: (i) free and forced vibrations of the laminated composite plate with no harvester and (ii) forced vibrations of the plate coupled with the energy harvester. Several parameters–such as the symmetric and anti-symmetric layups, length of the harvester, and piezoelectric material parameters–are considered to study their effects on the electrical output.
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| 2. |
- Mobaraki, H. A., et al.
(författare)
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Forced vibration analysis of laminated composite plates under the action of a moving vehicle
- 2022
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Ingår i: Frattura ed Integrita Strutturale. - 1971-8993. ; 16:59, s. 198-211
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Tidskriftsartikel (refereegranskat)abstract
- This paper provides a finite element analysis of laminated composite plates under the action of a moving vehicle. The vehicle is modeled as a rigid body with four suspension systems, each consisting of a springdashpot. Overall, the vehicle possesses three degrees of freedom: vertical, rolling, and pitching motions. The equations of motion of the plate are deduced based on first-order shear deformation theory. Using the EulerLagrange equations, the system of coupled equations of motion is extracted and solved by using the Newmark time discretization scheme. The algorithm is validated through the comparison of both the free and forced vibration results provided by the present model and exact or numerical results reported in the literature. The effects are investigated of several system parameters on the dynamic response.
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| 3. |
- S. Valvo, Paolo, et al.
(författare)
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The European project SUREBridge - A case study in Tuscany
- 2017
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Ingår i: AIMETA 2017 - Proceedings of the 23rd Conference of the Italian Association of Theoretical and Applied Mechanics. - 9788894248470 ; 2
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Konferensbidrag (refereegranskat)abstract
- The European project SUREBridge (Sustainable Refurbishment of Existing Bridges) is developing a new concept for the refurbishment of road bridges. The proposed technique takes advantage of the peculiarities of fibre-reinforced materials to perform upgrading, repair, and strengthening in an effective and efficient way in terms of resource consumption, waste production, construction time, and traffic disruption. The technique applies to bridges with reinforced concrete slab and longitudinal girders made of either reinforced concrete or steel. Longitudinal girders are strengthened by bonding carbon fibre-reinforced polymer (CFRP) laminates to their bottom surfaces. Higher structural performances are achieved by pre-stressing the CFRP laminates. The existing concrete slab is not demolished, with savings in both construction time and waste production. Instead, tailor-made glass fibre-reinforced polymer (GFRP) panels are connected to the deck to increase its overall bending strength. Furthermore, GFRP panels enable the widening of the road section, if necessary to upgrade the bridge to increased traffic demand. This paper presents the application of the SUREBridge technique to a real bridge located in San Miniato, Tuscany, Italy. The designed intervention includes both the widening of the road section and the structural strengthening of the deck to comply with current traffic load.
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