A variety of elastic response models have been developed for specific types of tissues (e.g. cardiovascular, connective, organ, etc). This present work analyzes three specific constitutive laws which are representative of three broad classes and compares the accuracy of these laws with that of a homographic constitutive law. It is shown that, whenever each of the specific constitutive laws is valid, the homography is also applicable and describes the measured material behavior, at least as accurately, for the same data. This general applicability indicates that the homography might represent the natural correlation between stress and strain for a variety of biological materials. Three examples comparing the homography with other specific constitutive laws using previously published experimental data complete the work.
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