Since living organs normally go through finite deformation, a bioengineer should know the subject of finite deformation analysis. This subject is not difficult, but it usually lies outside the common engineering curriculum. It is not simple, and considerable patience is needed to master it. In the following, a presentation of its most important aspects is given in easy to understand physical terms. There are many books and papers on this subject (see References). Fung (1965) is believed to be one of the easiest to read.
KeywordsStress Vector Strain Energy Function Lagrangian Description Kirchhoff Stress Undeformed State
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