Synergistic use of piezoelectric and shape memory alloy elements for vibration-based energy harvesting

Adeodato, Arthur; Duarte, Brenno Tavares; Monteiro, Luciana L. S.; Pacheco, Pedro Manuel Calas Lopes; Savi, Marcelo A.

doi:10.1016/j.ijmecsci.2020.106206

Cited by 29 publications

(9 citation statements)

References 36 publications

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Section: Resultssupporting

confidence: 91%

“…As the mass is constant in the vibratory system, dynamic stiffness produces a change in the natural frequency, generating an increase of 6.83%. A similar finding was obtained by Adeodato et al [37]. From the data in Figure 9a,b, the vibrational parameters were calculated: natural frequency f n and stiffness K (see Table 3).…”

Section: Vibratory Response Of Mass-spring Niti Systemsupporting

confidence: 82%

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Thermomechanical Characterization and Modeling of NiTi Shape Memory Alloy Coil Spring

et al. 2023

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Today, shape memory alloys (SMAs) have important applications in several fields of science and engineering. This work reports the thermomechanical behavior of NiTi SMA coil springs. The thermomechanical characterization is approached starting from mechanical loading–unloading tests under different electric current intensities, from 0 to 2.5 A. In addition, the material is studied using dynamic mechanical analysis (DMA), which is used to evaluate the complex elastic modulus E* = E′ − iE″, obtaining a viscoelastic response under isochronal conditions. This work further evaluates the damping capacity of NiTi SMA using tan δ, showing a maximum around 70 °C. These results are interpreted under the framework of fractional calculus, using the Fractional Zener Model (FZM). The fractional orders, between 0 and 1, reflect the atomic mobility of the NiTi SMA in the martensite (low-temperature) and austenite (high-temperature) phases. The present work compares the results obtained from using the FZM with a proposed phenomenological model, which requires few parameters for the description of the temperature-dependent storage modulus E′.

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Section: Resultssupporting

confidence: 91%

Section: Vibratory Response Of Mass-spring Niti Systemsupporting

confidence: 82%

Thermomechanical Characterization and Modeling of NiTi Shape Memory Alloy Coil Spring

et al. 2023

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“…SMAs are used in the aerospace and automotive industries to improve the performance and safety of airplanes and vehicles [6,7]. Additionally, there is evidence that they could capture energy from fluctuations in temperature [8]. SMAs play an essential role in various fields, including healthcare, transportation, and the development of energy solutions, among others.…”

Section: Introductionmentioning

confidence: 99%

Introductory Chapter: Introduction to Shape Memory Alloys

Asaduzzaman Chowdhury,

Hossain,

Hosne Mobarak

2024

Shape Memory Alloys - New Advances

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“…As one of the most fundamental flexible mechanical parts, helical springs are widely applied in various engineering disciplines such as high-speed sports car engines [ 1 ], energy-harvesting devices [ 2 ] and robotic exoskeletons [ 3 ] due to its flexibility and the functionality of storing or absorbing energy. The basic theories for depicting the mechanical properties of helical springs date back to the simple Hook’s law and the relatively more comprehensive Wahl’s spring theory [ 4 ], which formulated the relationships between the geometric parameters of a normal helical spring and its static mechanical properties.…”

Section: Introductionmentioning

confidence: 99%

Dynamic Finite Element Model Based on Timoshenko Beam Theory for Simulating High-Speed Nonlinear Helical Springs

Zhao

Yang

et al. 2023

Sensors

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Helical springs with nonlinear geometric parameters nowadays have shown great advantages over classical linear springs, especially due to their superior performance in diminishing dynamic responses in high-speed situations. However, existing studies are mostly available for springs with linear properties, and the sole FE spring models using solid elements occupy significant computational resources. This study presents an FE spring model based on Timoshenko beam theory, which allows for high-speed dynamic simulations of nonlinear springs using a beehive valve spring sample. The dynamic results are also compared with the results of the FE model using solid elements and the results of the engine head test and indicate that the proposed FE model can accurately predict dynamic spring forces and the phenomenon of coil clash when simulating the beehive spring at engine speeds of both 5600 and 8000 RPM. The results also indicate that rapid coil impact brings significant spike forces. It should also be noted that the FE spring model using beam elements displays sufficient accuracy in predicting the dynamic responses of nonlinear springs while occupying much fewer computational resources than the FE model using solid elements.

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Synergistic use of piezoelectric and shape memory alloy elements for vibration-based energy harvesting

Cited by 29 publications

References 36 publications

Thermomechanical Characterization and Modeling of NiTi Shape Memory Alloy Coil Spring

Thermomechanical Characterization and Modeling of NiTi Shape Memory Alloy Coil Spring

Introductory Chapter: Introduction to Shape Memory Alloys

Dynamic Finite Element Model Based on Timoshenko Beam Theory for Simulating High-Speed Nonlinear Helical Springs

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