Biomechanics pp 242-320 | Cite as

Bioviscoelastic Solids

  • Yuan-Cheng Fung
Chapter

Abstract

This chapter is focused on soft tissues. We shall first consider some of the most elastic materials in the animal kingdom: abductin, resilin, elastin, and collagen. Collagen will be discussed in greater detail because of its extreme importance to human physiology. Then we shall consider the thermodynamics of elastic deformation, and make clear that there are two sources of elasticity: one associated wit change of internal energy, and another associated with change of entropy. Following this, we shall consider the constitutive equations of soft tissues. Results of uniaxial tension experiments will be considered first, leading to the concept of quasilinear viscoelasticity. Then we will discuss biaxial loading experiments on soft tissues, methods for describing three-dimensional stresses and strains in large deformation, and the meaning of the pseudo-strain energy function.

Keywords

Relaxation Function Strain Energy Function Stretch Ratio Ground Substance Elastin Fiber 
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© Springer Science+Business Media New York 1993

Authors and Affiliations

  • Yuan-Cheng Fung
    • 1
  1. 1.Department of BioengineeringUniversity of California, San DiegoLa JollaUSA

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