Simulation based estimation of dynamic mechanical properties for viscoelastic materials used for vocal fold models

Rupitsch, Stefan J.; Ilg, J.; Sutor, Alexander; Lerch, Reinhard; Döllinger, Michael

doi:10.1016/j.jsv.2011.05.008

Cited by 37 publications

(33 citation statements)

References 42 publications

(42 reference statements)

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“…Third, the material parameters in the simulation were frequency-independent. However, Rupitsch et al [33] showed that the elasticity of this silicone material increases with frequency. Since a stiffer material would likely result in lower displacements [46], this is consistent with lower displacements in the experimental result.…”

Section: Resultsmentioning

confidence: 99%

“…Each of these studies required excised specimens, thus precluding in vivo application. The vibration transmission analyzer technique used in [33, 34] was demonstrated to yield the frequency-dependent material properties up to 400 Hz. However, this method could only be applied to the measurement of synthetic specimens with known geometry.…”

Section: Discussionmentioning

confidence: 99%

“…A rod resonance apparatus [31, 32] was used to measure the frequency-dependent Young’s modulus of viscoelastic materials. Furthermore, in [33, 34], the measurement with a so-called vibration transmission analyzer was demonstrated to estimate the frequency-dependent parameters of single-layer silicone samples used for vocal fold models with the aid of an inverse method [35, 36]. These methods provide dynamic information, but require homogeneous specimens of known geometry; consequently, not all types of real tissue can be investigated.…”

Section: Introductionmentioning

confidence: 99%

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Pipette aspiration applied to the characterization of nonhomogeneous, transversely isotropic materials used for vocal fold modeling

Weiß

Thomson

Lerch

et al. 2013

Journal of the Mechanical Behavior of Biomedical Materials

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The etiology and treatment of voice disorders are still not completely understood. Since the vibratory characteristics of vocal folds are strongly influenced by both anatomy and mechanical material properties, measurement methods to analyze the material behavior of vocal fold tissue are required. Due to the limited life time of real tissue in the laboratory, synthetic models are often used to study vocal fold vibrations. In this paper we focus on two topics related to synthetic and real vocal fold materials. First, because certain tissues within the human vocal folds are transversely isotropic, a fabrication process for introducing this characteristic in commonly-used vocal fold modeling materials is presented. Second, the pipette aspiration technique is applied to the characterization of these materials. By measuring the displacement profiles of stretched specimens that exhibit varying degrees of transverse isotropy, it is shown that local anisotropy can be quantified using a parameter describing the deviation from an axisymmetric profile. The potential for this technique to characterize homogeneous, anisotropic materials, including soft biological tissues such as those found in the human vocal folds, is supplemented by a computational study.

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Section: Resultsmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Pipette aspiration applied to the characterization of nonhomogeneous, transversely isotropic materials used for vocal fold modeling

Weiß

Thomson

Lerch

et al. 2013

Journal of the Mechanical Behavior of Biomedical Materials

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“…A shortcoming of these models is the lack of physiological correlation between tissue properties and model system parameters (Rupitsch et al 2011, Yang et al 2012, although progress has been made in establishing these relationships (Döllinger et al 2002, Titze & Story 2002). In addition, most reduced-order models are based on the assumption of symmetric, inviscid 1D flow through the glottis to justify the use of Bernoulli's equation for fluid loading (Ruty et al 1997, Teffahi 2009, Wurzbacher et al 2006, Zañartu et al 2007, despite evidence to the contrary.…”

Section: Figurementioning

confidence: 99%

Fluid Dynamics of Human Phonation and Speech

Mittal

Erath

Plesniak

2013

Annu. Rev. Fluid Mech.

124

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This article presents a review of the fluid dynamics, flow-structure interactions, and acoustics associated with human phonation and speech. Our voice is produced through the process of phonation in the larynx, and an improved understanding of the underlying physics of this process is essential to advancing the treatment of voice disorders. Insights into the physics of phonation and speech can also contribute to improved vocal training and the development of new speech compression and synthesis schemes. This article introduces the key biomechanical features of the laryngeal physiology, reviews the basic principles of voice production, and summarizes the progress made over the past half-century in understanding the flow physics of phonation and speech. Laryngeal pathologies, which significantly enhance the complexity of phonatory dynamics, are discussed. After a thorough examination of the state of the art in computational modeling and experimental investigations of phonatory biomechanics, we present a synopsis of the pacing issues in this arena and an outlook for research in this fascinating subject. 437

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“…Different dynamic tests such as measurement of the flying time, [5][6][7] resonance testing considering only the fundamental resonance frequency, [8][9][10] or resonant acoustic spectroscopy (RAS) [11][12][13][14] have been applied to AM, but the frequency dependency behavior of AM cannot be evaluated properly with these tests. Recently, measurement of FRFs has been performed on LVE materials 15,16 and more specifically on AM. [17][18][19][20] Gudmarsson et al 18,19 and Carret et al 20 have demonstrated that FRFs measurement is a promising approach to characterize the LVE behavior.…”

Section: Introductionmentioning

confidence: 99%

Linear viscoelastic behavior of asphalt mixes from dynamic frequency response functions

Carret

Benedetto

Sauzéat

2020

Num Anal Meth Geomechanics

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Summary In the small strain domain, asphalt mixes (AM) have a linear viscoelastic (LVE) behavior that is strongly dependent on frequency and temperature. The maximum ratio of modulus values can be up to 1000, and traditional elastic analyses are not pertinent. The possibility to characterize AM from frequency response functions (FRFs) was studied. A new optimization process using the finite element method (FEM) has been developed to back‐calculate the LVE properties of AM from FRFs. The numerical optimization process was applied to a reference material with averaged LVE properties determined from tension‐compression tests performed on a wide variety of AM types. The LVE properties were modeled considering the 3‐Dim version of the model 2S2P1D (2 Springs, 2 Parabolic elements, and 1 Dashpot). Reference FRFs for the considered reference material were obtained from FEM simulations. Three different configurations that may be of interest for practical tests were studied at five different temperatures. The proposed numerical optimization method consists in performing separate optimizations at each temperature to obtain the LVE properties for the considered temperature. Then values obtained at each temperature are considered to optimize 2S2P1D and Williams Landel Ferry (WLF) Equation constants to simulate the global LVE behavior of the material. The accuracy of the process was assessed regarding both the calculated FRFs and the complex modulus evaluation. Results indicate that the proposed optimization process converges almost perfectly towards the reference FRFs. The simulated complex modulus values are also in very good agreement with the values of the reference material.

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Simulation based estimation of dynamic mechanical properties for viscoelastic materials used for vocal fold models

Cited by 37 publications

References 42 publications

Pipette aspiration applied to the characterization of nonhomogeneous, transversely isotropic materials used for vocal fold modeling

Pipette aspiration applied to the characterization of nonhomogeneous, transversely isotropic materials used for vocal fold modeling

Fluid Dynamics of Human Phonation and Speech

Linear viscoelastic behavior of asphalt mixes from dynamic frequency response functions

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