Viscoelastic Damping Technologies: Finite Element Modeling and Application to Circular Saw Blades

Vasques, C. M. A.; Cardoso, Luís

doi:10.1007/978-94-007-1703-9_9

Cited by 11 publications

(13 citation statements)

References 133 publications

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“…A structure made of wood and rubber bands was built to simulate free boundary conditions during the test. Four rubber bands were used for the suspension of the plates, letting the sample in vertical position and minimizing the contact surface 37 , 38 . In this configuration, also the resting position of the hammer results vertical after the hit, avoiding the occurrence of accidental secondary strikes during the acquisition.…”

Section: Methodsmentioning

confidence: 99%

The impact of alkaline treatments on elasticity in spruce tonewood

Malvermi

Albano

González

et al. 2022

Sci Rep

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It is commonly believed that violins sound differently when finished. However, if the role of varnishes on the vibrational properties of these musical instruments is well-established, how the first components of the complete wood finish impact on the final result is still unclear. According to tradition, the priming process consists of two distinct stages, called pre-treatment and sizing. The literature reports some recipes used by old Cremonese luthiers as primers, mainly based on alkaline aqueous solutions and protein-based glues. In this manuscript, we analyze the impact of these treatments on the mechanical properties of the material. The combination of two pre-treatments and three sizes is considered on nine different plates. We compare the vibrational properties before and after the application and assess the effects of the different primers, also supported by finite element modeling. The main outcome is that the combination of particular treatments on the violin surface before varnishing leads to changes not only to the wood appearance, but also to its vibrational properties. Indeed pre-treatments, often considered negligible in terms of vibrational changes, enhance the penetration of the size into the wood structure and strengthen the impact of the latter on the final rigidity of the material along the longitudinal and radial directions.

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Section: Methodsmentioning

confidence: 99%

The impact of alkaline treatments on elasticity in spruce tonewood

Malvermi

Albano

González

et al. 2022

Sci Rep

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“…17,21 At the heart of woodworking machinery lies the circular saw, an indispensable tool for transforming planks into dimension lumber, catering to a myriad of applications. 15,22,23 Circular saw machines excel in ripping and crosscutting operations on flat plank surfaces, yielding square or rectangular pieces. 24,25,26 Moreover, these versatile machines can be employed for specialised tasks such as re-sawing and cutting dadoes and rabbets.…”

Section: Introductionmentioning

confidence: 99%

Modelling and simulation of a tenoning jig to predict performance and failure mode on circular saw machine

Icha,

Odey

2024

International Wood Products Journal

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This research predicts the performance and failure mode of a developed tenoning jig (TJ) used on the circular saw machine. TJ developed consisted of a double-based adjustable medium density fibreboard (MDF) with an area of 100 × 200 mm2, side panel of equivalent length and a height of 114 mm2. SOLIDWORKS software, 2021 was used to model and simulate the jig applying a static load of 500 N. The jig performance was evaluated, results were recorded and deformation shape presented in true and defined scale of 1160.89. The analysis shows maximum directional deformation at 2.342 × 10-2 mm, equivalent elastic strain at 1.245 × 10-4, stress and yield strength at 2.580 × 106 N/m2 and 3.930 × 107 N/m2, respectively, with the factor of safety at 15. The jig offers cost-effectiveness with an estimated manufacturing cost of US$43.123 as of 2021. This research enhances safety in circular saw operations, minimising risk and improving the overall woodworking process.

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“…Moreover, the recently developed hybrid active–passive damping systems (Benjeddou, 2001; Trindade and Benjeddou, 2002), which integrate the high performance, capability, precision, and adaptivity of piezoelectric-active control systems with the simplicity, reliability, low cost, effectiveness, and stability robustness of passive viscoelastic damping treatments, have opened new horizons for wide-band noise and vibration control. Accordingly, there is a relatively large amount of research works in the area of hybrid active–passive structural vibration control based on the piezoelectric materials and viscoelastic damping treatments (Kattimani and Ray, 2014; Koh et al, 2012; Kumar and Singh, 2012; Plattenburg et al, 2015a; Zhang and Zheng, 2014; Zheng et al, 2011), owing to the associated prospective industrial applications (Kang and Kim, 2003; Plattenburg et al, 2015b; Vasques and Cardoso, 2011). However, there are comparatively much fewer investigations on the hybrid active–passive acoustic (noise) suppression systems (Benjeddou, 2001; Cabell and Gibbs, 2000; Zheng et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

“…Such analysis is not restricted by the different assumptions made in classical and/or higher order plate theories (Denli and Sun, 2007; D’Alessandro et al, 2013; Plattenburg and Singh, 2015; Sahu et al, 2015; Sanada et al, 2015; Wang et al, 2005). It can expediently aid the acoustic engineers in the prospective industrial and noise control engineering applications (Huang and Nutt, 2009; Kang and Kim, 2003; Kuo et al, 2008; Plattenburg et al, 2015b; Rocha and Dias, 2015; Vasques, 2012; Vasques and Cardoso, 2011). Moreover, the deliberated extensive simulation data can aid as a reliable benchmark for evaluation of asymptotic or strictly numerical approaches (Li, 2011; Plattenburg and Singh, 2015; Ruzzene and Baz, 2000; Shah and Ray, 2013; Shields et al, 1998).…”

Section: Introductionmentioning

confidence: 99%

Broadband sound transmission loss enhancement of an arbitrary-thick hybrid smart composite plate using multi-objective particle swarm optimization–based active control

Hasheminejad

Hakimi

Keshavarzpour

2018

Journal of Intelligent Material Systems and Structures

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The active damping control strategy upgraded by a multi-objective particle swarm optimization algorithm is utilized for improved broadband suppression of sound transmission through a simply supported piezo-laminated rectangular panel of arbitrary thickness featuring an orthotropic functionally graded viscoelastic material interlayer. The controller parameters are tuned optimally through multi-objective particle swarm optimization which yields the Pareto optimal frontiers of certain applicable conflicting objective functions. Extensive numerical simulations include the calculated sound transmission loss of the passive, active, and hybrid (active–passive) piezo-composite panels under normally or obliquely incident plane waves. It is found that the overall sound transmission loss levels substantially rise with increasing thickness of (carbon fiber–reinforced) viscoelastic interlayer, which can further be improved by augmenting the fiber volume fraction. Also, the purely active multi-objective particle swarm optimization–based control system performs well in the low-frequency region, while the good performance of the hybrid smart panel is achieved by balancing an optimal trade-off between the active and passive control configurations in a relatively wide frequency range. Accuracy of formulation is confirmed by comparisons with the existing data as well as with those of a finite element model software package. Furthermore, a frequency-domain subspace identification scheme is applied to estimate the state matrices of proposed control systems, and the closed-loop stability is established based on eigenvalue analysis of identified systems.

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Viscoelastic Damping Technologies: Finite Element Modeling and Application to Circular Saw Blades

Cited by 11 publications

References 133 publications

The impact of alkaline treatments on elasticity in spruce tonewood

The impact of alkaline treatments on elasticity in spruce tonewood

Modelling and simulation of a tenoning jig to predict performance and failure mode on circular saw machine

Broadband sound transmission loss enhancement of an arbitrary-thick hybrid smart composite plate using multi-objective particle swarm optimization–based active control

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