One of the great challenges artificial spinal disc (ASD) design lies in reproduction complex mechanics an intervertebral (IVD) that is characterized by a viscoelastic, nonlinear, and anisotropic behavior. Although development multi-material additive manufacturing (AM) combined with biomimetic provide new opportunities for realization ASDs behavior, influence different designs on kinematics ASD ...

Ligaments, tendons and other soft tissues are nonlinearly viscoelastic. To discriminate among various constitutive equations which may be used to describe the tissue, appropriate experimental modalities are requisite. Ideally, testing should span physiologic ranges for load (or strain), load history (recovery and reloading), and load onset and duration, and a robust model will fit all data. Met...

Abstract To simulate the specific material properties of thermoplastic polymers a suitable constitutive model is essential. The parallel rheological framework (PRF) was calibrated and evaluated in this study as potential for polymer stent application. Tensile well recovery tests with different loading rates were performed using PLLA specimens. In order to calibrate model, conducted simulated ac...

Large conduit arteries are not purely elastic, but viscoelastic, which affects not only the mechanical behavior but also the ventricular afterload. Different hysteresis loops such as pressure-diameter, pressure-luminal cross-sectional area (LCSA), and stress-strain have been used to estimate damping capacity, which is associated with the ratio of the dissipated energy to the stored energy. Typi...

This paper characterized bovine extraocular muscles (EOMs) using creep, which represents long-term stretching induced by a constant force. After preliminary optimization of testing conditions, 20 fresh EOM samples were subjected to four different loading rates of 1.67, 3.33, 8.33, and 16.67%/s, after which creep was observed for 1,500 s. A published quasilinear viscoelastic (QLV) relaxation fun...

The article proposes resolving equations for eccentrically compressed reinforced concrete short columns obtained on the viscoelastic model basis. Comparison of results according to theory heredity, hardening, aging, flow, kinetic theory, as well nonlinear creep by Yu.A. Gurieva is presented.

Additional dampers are employed in order to decrease the dynamic response of structure against the earthquake and wind loading recently. In this study, two types of systems related to waste of inactive energy, i.e. frictional damper which is categorized in dampers dependent on movement and viscoelastic damper which is categorized in dampers dependent on velocity, in making steel structures resi...

Abstract In this article, we consider a viscoelastic plate equation with past history, nonlinear damping, and logarithmic nonlinearity. We prove explicit general decay rate results of the solution to history. Convex properties, inequalities, generalized Young’s inequality are mainly used estimate.