recently, a large amount of studies have been related to nonlinear systems with multi-degrees of freedom as well as continuous systems. the purpose of this paper is to optimize passive vibration absorbers in linear and nonlinear states for an euler-bernoulli beam with a nonlinear vibratory behavior under concentrated moving load. the goal parameter in the optimization is maximum deflection of t...

Mechanical behavior of articular cartilage was characterized in unconfined compression to delineate regimes of linear and nonlinear behavior, to investigate the ability of a fibril-reinforced biphasic model to describe measurements, and to test the prediction of biphasic and poroelastic models that tissue dimensions alter tissue stiffness through a specific scaling law for time and frequency. D...

The importance of viscoelasticity biological media that are used in medical ultrasounds has been discussed the literature. Furthermore, use microbubbles drastically improves efficiency both diagnostic and therapeutic ultrasounds. Weakly nonlinear wave equations for ultrasound propagation liquids containing have long studied, although liquid phase ignored simplicity. In this study, we derived a ...

Soft Tissue Engineering In article number 2215220, Scott J. Hollister, Michael E. Davis, and co-workers report, 3D printing of a novel architected auxetic with enhanced mechanical biological performance. Specifically, the printed auxetics have high flexibility, permeability, nonlinear deformation behavior as demonstrated through computational, mechanical, analysis. These characteristics provide...

1. The use of stable carbon (C) and nitrogen (N) isotopes ( δ 15 N and δ 13 C, respectively) to delineate trophic patterns in wild animals is common in ecology. Their utility as a tool for interpreting temporal change in diet due to seasonality, migration, climate change or species invasion depends upon an understanding of the rates at which stable isotopes incorporate from diet into animal tis...

In the present study, mechanical behavior of tricuspid valve (TV) chordae tendineae tissue is investigated experimentally and theoretically. A series uniaxial testing experiments TV conducted its viscoelastic model developed by taking into account initial condition displacement tissue. Our experimental result shows typical J-shaped force-displacement curve corresponding established via a nonlin...

Surgical simulators present a safe and potentially effective method for surgical training, and can also be used in preand intra-operative surgical planning. Realistic modeling of medical interventions involving tool-tissue interactions has been considered to be a key requirement in the development of high-fidelity simulators and planners. The soft-tissue constitutive laws, organ geometry and bo...

Post-stroke impairment is associated not only with structural lesions, but also with dysfunction in surviving perilesional tissue. Previous studies using equivalent current dipole source localization of MEG/EEG signals have demonstrated a preponderance of slow-wave activity localized to perilesional areas. Recent studies have also demonstrated the utility of nonlinear analyses such as multiscal...

OBJECTIVES/HYPOTHESIS The mechanical properties of normal auricular cartilage provide a benchmark against which to characterize changes in auricular structure/function due to genetic defects creating phenotypic abnormalities in collagen subtypes. Such properties also provide inputs/targets for auricular reconstruction scaffold design. Several studies report the biomechanical properties for sept...