... stresses and osmotic swelling. Parameter estimation and model validation were based on mechanical data of porcine left anterior descending (LAD) media under radial inflation, axial extension, and twist tests. The results show that a reduced four parameter model is sufficient to reliably predict the passive...

... computational studies have demonstrated that radially aligned fibers stiffen a material in unconfined compression most by limiting lateral expansion while vertically aligned fibers buckle under the compressive loads. In this short communication, we show that in conjunction with swelling, these intuitive...

...Tracy A. Powell; Rouzbeh Amini; Alina Oltean; Vincent A. Barnett; Kevin D. Dorfman; Yoav Segal; Victor H. Barocas As an alternative to purely mechanical methods, optical tracking of passive osmotic swelling was used to assess mechanical properties of the porcine lens capsule. A simple model...

.... Eng., 2009, 131, p. 044504) ,” ASME J. Biomech. Eng. 0148-0731 , 131 , p. 095501 . 10.1115/1.3128727 Lai , W. M. , Hou , J. S. , and Mow , V. C. , 1991 , “ A Triphasic Theory for the Swelling and Deformation Behaviors of Articular Cartilage ,” ASME J. Biomech. Eng. 0148...

... negative charges on proteoglycans and the structural and compositional and material property inhomogeneities within the tissue. In the present study, the in vitro swelling and curling behaviors of thin strips of cartilage were analyzed with a new structural model using the triphasic mixture theory...

... of tissue swelling as an RS producing mechanism in the local micro-level. The implications of RS mechanism hierarchy are discussed regarding the interpretations of commonly used experimental methods aimed to study RS or to estimate its magnitude. Of the three categories of RS mechanisms, the local micro-RS...

...J. M. Huyghe; W. Wilson; K. Malakpoor The triphasic theory on soft charged hydrated tissues ( Lai, W. M., Hou, J. S., and Mow, V. C., 1991, “A Triphasic Theory for the Swelling and Deformation Behaviors of Articular Cartilage,” ASME J. Biomech. Eng., 113, pp. 245–258 ) attributes the swelling...

... compression. The model consisted of the extracellular matrix and chondrocytes located in the superficial, middle, and deep zones. Chondrocytes were surrounded by a pericellular matrix and were assumed spherical prior to tissue swelling and load application. Material properties of the chondrocytes...

... when immersed in buffered solutions. To describe the hydrogel swelling behavior and the distribution of the ionic concentrations within the hydrogel interior and surrounding bath solution, a chemo-electro-mechanical multi-field coupling formulation ( 35 ) is used. The hydrogel is considered...

... the tissue is higher than in the surrounding synovial fluid (cation concentration is higher and the anion concentration is lower). This excess of ion particles leads to an osmotic pressure difference, which causes swelling of the tissue. In the last decade several mechano-electrochemical models, which...

...David A. Reiter, M.S.; Nesrin Sarigul-Klijn, Ph.D; Munish C. Gupta, M.D.; Fadi A. Fathallah, Ph.D. The objectives of this study are to present a 2-D optical method for measuring gross kinematics of porcine anterior column units (ACUs) exposed to swelling with no applied load, provide a detailed...

... 2002 14 02 2003 orthopaedics biomechanics bioelectric potentials finite element analysis Galerkin method porosity biological tissues stress analysis swelling Degenerative changes to the intervertebral disc are commonly implicated in low back pain and other disorders...

...W. Y. Gu; M. A. Justiz This paper describes a new apparatus and method for measuring swelling dependent electrical conductivity of charged hydrated soft tissues. The apparatus was calibrated using a conductivity standard. Swelling dependent specific conductivity of porcine annulus fibrosis (AF...

... loading with the relatively low osmotic swelling pressure during rest, suggests the necessity of such directiondependent flow resistance to ensure that all the fluid exuded from the disc during loading is recovered during rest. A physical model demonstrating the direction-dependent resistance...

... collagen lattice pressurized by the Donnan osmotic swelling pressure of proteoglycans. As a first step in modeling the collagen lattice, two-dimensional networks of tensed, elastic, interconnected cables were studied as conceptual models. The models were subjected to the boundary conditions of confined...

...C. Bachmann; M. Wilson; V. Kini; S. Deutsch and; A. A. Fontaine; J. M. Tarbell Several types of mechanical cardiac prostheses have been constructed with Delrin occluders, a material that is subject to osmotic swelling. The leaflets are designed to expand to specific tolerances when immersed...