Mechanical properties of soft human tissues under dynamic loading

H Saraf; K T Ramesh; A M Lennon; A C Merkle; J C Roberts

doi:10.1016/j.jbiomech.2006.09.021

Mechanical properties of soft human tissues under dynamic loading

J Biomech. 2007;40(9):1960-7. doi: 10.1016/j.jbiomech.2006.09.021. Epub 2006 Nov 27.

Authors

H Saraf¹, K T Ramesh, A M Lennon, A C Merkle, J C Roberts

Affiliation

¹ Department of Mechanical Engineering, The Johns Hopkins University, Baltimore, MD 21218, USA.

PMID: 17125775
DOI: 10.1016/j.jbiomech.2006.09.021

Abstract

The dynamic response of soft human tissues in hydrostatic compression and simple shear is studied using the Kolsky bar technique. We have made modifications to the technique that allow loading of a soft tissue specimen in hydrostatic compression or simple shear. The dynamic response of human tissues (from stomach, heart, liver, and lung of cadavers) is obtained, and analyzed to provide measures of dynamic bulk modulus and shear response for each tissue type. The dynamic bulk response of these tissues is easily described by a linear fit for the bulk modulus in this pressure range, whereas the dynamic shearing response of these tissues is strongly non-linear, showing a near exponential growth of the shear stress.

Publication types

Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

Adolescent
Adult
Biomechanical Phenomena*
Compressive Strength
Humans
Liver*
Lung*
Myocardium*
Shear Strength
Stomach*
Stress, Mechanical