Output optimization of piezoelectric monitoring system considering loss impedance and spatial arrangement under traffic load

Wang, Peng; Wang, Jun; Pan, Jiayao; Geng, Xueyu; Ding, Guangya; Yang, Xiaotian

doi:10.1016/j.trgeo.2022.100820

Cited by 2 publications

(2 citation statements)

References 43 publications

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“…To simplify the calculation, it was assumed that cement-stabilized base and pavement are rigid bodies and that there was no internal deformation between them. Considering the influence of the equipment packaging and external factors, the applied external load loss was calculated according to the attenuation coefficient g. To make the loading process more applicable, the external load was simplified to half sine wave loading (24,32). The actual vertical and horizontal loads on the piezoelectric ceramics were calculated according to Equations 1 and 2:…”

Section: Theoretical Analysismentioning

confidence: 99%

Road Piezoelectric Power Output Model and Experimental Study under Bidirectional Vehicle Load Excitation

Ni,

Wang,

Song

et al. 2023

Transportation Research Record: Journal of the Transportation R

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Recently, piezoelectric transducers have gained significant attention for energy recovery applications in road engineering. However, in laboratory tests, vehicle loads are often simplified using vertical vibration loads, thus ignoring the role of vehicle tangential loads. In this study, a power output model of a piezoelectric transducer under vertical and tangential loads was proposed through theoretical analysis. A bidirectional cyclic dynamic load test was conducted on the piezoelectric-concrete specimens in combination with a large dynamic and static straight shear instrument, and the power output law of the piezoelectric transducer under vertical and horizontal shear was investigated. The results revealed that the vertical vibration load was the main factor affecting the output performance of the piezoelectric transducer; however, with the addition of the tangential load, the electric energy output of piezoelectric pavement increased with an increase in the horizontal shear rate and displacement. When vibrating vertically (200 kPa and 4 Hz), the electric energy output of piezoelectric pavement was 4.979 μW. However, under the action of vertical vibration and horizontal shear with the working conditions of 200 kPa and 4 Hz, and 0.1 mm and 1 Hz, the electric energy output of piezoelectric pavement was 21.04 μW, which was 3.2 times that of the vertical vibration load alone. Therefore, by considering the influence of vehicle tangential loads, the power output of piezoelectric transducers can be calculated more accurately, which provides a reference for actual installed capacities in real engineering applications.

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Section: Theoretical Analysismentioning

confidence: 99%

Road Piezoelectric Power Output Model and Experimental Study under Bidirectional Vehicle Load Excitation

Ni,

Wang,

Song

et al. 2023

Transportation Research Record: Journal of the Transportation R

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“…Jasim et al [19] used COMSOL to simulate energy harvesters with different area, thicknesses, and packaging material to evaluate their output. Wang et al [20] established a small-scale stacked piezoelectric transducer model with high compressive rigidity to analyze the energy collection considering external load impedance. The results showed good consistency between the small-scale model and experimental results.…”

Section: Introductionmentioning

confidence: 99%

Coupled dynamic and piezoelectric response of RPEHs embedded in road under traffic load via multiscale finite element models

Wang,

Pan,

Wang

et al. 2023

Smart Mater. Struct.

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Road Piezoelectric Energy Harvesting Systems (RPEHs) effectively collect and convert mechanical energy from road surface into electrical energy for intelligent traffic guidance and monitoring. To accurately evaluate the energy harvesting efficiency of RPEHs under traffic loads and road conditions, a multiscale finite element model of traffic load-road-RPEHs is developed. The model encompasses a encapsulated stacked piezoelectric transducer embedded in an large-scale road model. This approach addresses the limitations of previous studies that neglected the effect of RPEHs structure on the dynamic and piezoelectric response. The large-scale model provides the dynamic response of RPEHs for an independent small-scale model of the stacked piezoelectric transducer to enable coupled dynamic and piezoelectric behavior. Furthermore, a piezoelectric output theory considering the loss impedance is formulated. Combining this theory with the open-circuit voltage obtained from the multiscale models, we determine the output voltage and power of RPEHs under various conditions, such as vehicle speeds, axle weights, burial depths. The results demonstrate that the loss impedance undergoes significant changes under different conditions, exerting a substantial impact on the output of RPEHs, which should be considered during analysis. RPEHs positioned closer to the road surface produce higher output but also exhibit increased stress concentration. The pavement modulus is inversely proportional to the piezoelectric output, while the subgrade modulus has a comparatively smaller impact due to the stiffness of RPEHs.

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Output optimization of piezoelectric monitoring system considering loss impedance and spatial arrangement under traffic load

Cited by 2 publications

References 43 publications

Road Piezoelectric Power Output Model and Experimental Study under Bidirectional Vehicle Load Excitation

Road Piezoelectric Power Output Model and Experimental Study under Bidirectional Vehicle Load Excitation

Coupled dynamic and piezoelectric response of RPEHs embedded in road under traffic load via multiscale finite element models

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