Thermoplastics under Long-Term Loading: Experiments and Viscoelastic-Viscoplastic Modeling

Tissue- and Microstructural-level Deformation of Aortic Tissue under Viscoelastic/Viscoplastic Loading

Mechanical function of tissues in health and disease is regulated through interactions of phenomena spanning across multiple length scales. The multiscale nature of tissue biomechanics should be incorporated into modeling approaches if a full description of soft tissue biomechanics is sought [1-4]. While gross changes in geometry are sufficient for quantifying tissue-level deformations, quantif...

Temporal Homogenization of Viscoelastic and Viscoplastic Solids Subjected to Locally Periodic Loading

As a direct extension of the asymptotic spatial homogenization method we develop a temporal homogenization scheme for a class of homogeneous solids with an intrinsic time scale significantly longer than a period of prescribed loading. Two rate-dependent material models, the Maxwell viscoelastic model and the power-law viscoplastic model, are studied as an illustrative examples. Double scale asy...

Analysis of Five Parameter Viscoelastic Model Under Dynamic Loading

The purpose of this paper is to analysis the viscoelastic models under dynamic loading. A five-parameter model is chosen for study exhibits elastic, viscous, and retarded elastic response to shearing stress. The viscoelastic specimen is chosen which closely approximates the actual behavior of a polymer. The module of elasticity and viscosity coefficients are assumed to be space dependent i.e. f...

Modeling Long - Term Policy Under Uncertainty

A Viscoelastic, Viscoplastic Model of Cortical Bone

Cortical bone, as the principal structural component of the human body, functions in both a load-bearing and protective capacity. As a material, cortical bone has been the subject of mechanical investigation and characterization for well over a century, and the time dependent nature of this material’s mechanical response to loading is well documented. To model this time-dependent behavior, many...