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Showing 1 to 8 of 8 for “"Viscoelastic modeling"”.
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Viscoelastic Modeling of Straight and Modified Binders at Intermediate and High Temperatures
… binders in the thermorheologically simple linear viscoelastic region, two models are proposed. Models to characterize the absolute value of the complex shear modulus (|G*|) and the phase angle (d) were developed using the matching function approach and validated by an experimental program. The …
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Viscoelastic Fluid Modeling for Geophysical Applications in an Eulerian Framework
… on long timescales, motivating the use of viscoelastic models for intermediate regimes. Such models are essential for capturing both stress accumulation and permanent deformation but are highly nonlinear and numerically challenging. Classical approaches in geophysical viscoelastic modeling …
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Studies of Biomacromolecule Adsorption and Activity at Solid Surfaces by Surface Plasmon Resonance and Quartz Crystal Microbalance with Dissipation Monitoring
… surfaces (90 to 95% water by mass). Voigt-based viscoelastic modeling of the QCM-D data was consistent with the existence of highly hydrated CMC layers with relatively low shear viscosities of ~ 10-3 N·s·m-2 and elastic shear moduli of ~ 105 N·m-2. Adsorption of pullulan 3-methoxycinnamates …
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Examining viscoelastic response of pregnant rat cervical tissue using 3, 4, and 5 element spring and dashpot models
… study, the main focus was to develop a simple viscoelastic model that can be used for describing the stress relaxation phenomenon of the rat cervical tissue. The intention was to develop a successful model from linear springs and viscous dashpots without using a repetitive scheme. Same basic …
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Characterization of Heterogeneous Material Properties of Aorta Using Nanoindentation
… aortic tissue was characterized in terms of viscoelastic material properties and correlations were obtained between these properties and tissue morphology. Additionally, the effect of material preservation on the material properties was determined. Changes in the mechanical properties of …
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Validation of FWD Testing Results at the Virginia Smart Road: Theoretically and by Instrument Responses
… analytical approaches used are linear elastic, viscoelastic, and viscoelastic combined with nonlinearity. Results show that estimation of unbound granular materials moduli using surface deflections is more reliable when 457-mm-diameter loading plate is used. Analysis of deflections from …
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Time-dependent assessment of the human lumbar spine in response to flexion exposures: in vivo measurement and modeling
… risk of LBDs. Trunk flexion can result in viscoelastic deformations of soft tissues and subsequent mechanical and neuromuscular alterations of the trunk, and may thereby increase LBD risk. While viscoelastic behaviors of isolated spinal motion segments and muscles have been extensively …
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Viscoelastic Models for Ligaments and Tendons
… tissues such as ligaments and tendons are viscoelastic materials. They exhibit a slow continuous increase in strain over time, or creep, when subjected to a constant stress and a slow continuous decrease in stress over time, or stress relaxation, when subjected to a constant strain. …