logging in or signing up Mechanics of hard and soft tissue priti0403 Download Post to : URL : Related Presentations : Let's Connect Share Add to Flag Embed Email Send to Blogs and Networks Add to Channel Copy embed code: Embed: Flash iPad Dynamic Copy Does not support media & animations Automatically changes to Flash or non-Flash embed WordPress Embed Customize Embed URL: Copy Thumbnail: Copy The presentation is successfully added In Your Favorites. Views: 221 Category: Education License: All Rights Reserved Like it (0) Dislike it (0) Added: April 04, 2012 This Presentation is Public Favorites: 0 Presentation Description No description available. Comments Posting comment... Premium member Presentation Transcript PRITI prajapati : PRITI prajapati Mechanics of hard and soft tissuePowerPoint Presentation: Hard Tissue Hard tissue refers to tissue that has become mineralised, tissue having a firm intercellular substance. In humans, some of the hard tissues include skeletal bones cartilages Bone In other animals, they include Antlers Ivories horns shellsPowerPoint Presentation: Soft Tissue Soft tissue is a term that refers to structures of the body that connect, envelope, support and/or move the structures around it. Examples of soft tissue include: Tendons Ligaments Fascia Skin fibrous tissues fat synovial membranesPowerPoint Presentation: Tissue biomechanics Living bone has the ability to adapt its properties to the change of mechanical load environment. An augmentation of physical activities such as running significantly increases the bone formation and mineralization whereas a long-term disuse of the skeleton involves inhibition of bone formation and induces significant demineralization of bone.Intracortical bone remodeling : Density evolution during training and detraining: Intracortical bone remodeling : Density evolution during training and detraining In everyday activities, viscosity of soft tissues as ligaments, tendons, and arteries, is observed. Stress depends on strain rate, and on the history of deformations. The influence of strain history is one of the main caracteristics of biological tissues.Typical relaxation function of human ACL, PCL, tendons: Typical relaxation function of human ACL, PCL, tendons Hard tissue and soft tissue biomechanics are investigated by means of continuum models undergoing non linear strains.Mechanical Characteristics : Mechanical Characteristics At small strains , elastin confers stiffness to the tissue and stores most of the strain energy . The collagen fibers are comparatively inextensible and are usually loose (wavy,crimped). With increasing tissue deformation the collagen is gradually stretched in the direction of deformation. When taut, these fibers produce a strong growth in tissue stiffness. The composite behavior is analogous to a nylon stocking , whose rubber band does the role of elastin as the nylon does the role of collagen. In soft tissues the collagen limits the deformation and protects the tissues from injury.Figure 1: Graph of lagrangian stress (T) versus stretch ratio (λ) of a preconditioned soft tissue. : Figure 1: Graph of lagrangian stress (T) versus stretch ratio (λ) of a preconditioned soft tissue . Soft tissues have the potential to undergo big deformations and still come back to the initial configuration when unloaded. The stress-strain curve is nonlinear , as can be seen in Figure 1. The soft tissues are also viscoelastic , incompressible and usually anisotropic . Some viscoelastic properties observable in soft tissues are: relaxation , creep and hysteresis .PowerPoint Presentation: Thank You You do not have the permission to view this presentation. In order to view it, please contact the author of the presentation.