Mechanical properties of soft human tissues under dynamic loading

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

Affiliations

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

²Applied Physics Laboratory, The Johns Hopkins University, Laurel, MD 20723, USA

Abstract and keywords

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.

Keywords: Mechanical properties; Soft tissues; Bulk modulus; Shear response; Kolsky bar; High strain rate

Links

DOI: 10.1016/j.jbiomech.2006.09.021

PubMed: 17125775

WoS: 000247741300009

History

Revised: 2006-09-15

Accepted: 2006-09-15

Online: 2006-11-27

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Cited By (14)

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2009	Trexler MM, Lennon AM, Luong QT, Wickwire AC, Roberts JC, Merkle AC. A modified split hopkinson pressure bar technique for characterizing soft materials and biological tissue under shear loading. In: Proceedings of the 37th International Workshop on Human Subjects for Biomechanical Research. 2009.
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2013	Sato F, Yamamoto Y, Ito D, Antona‐Makoshi J, Ejima S, Kamiji K, Yasuki T. Hyper‐viscoelastic response of perfused liver under dynamic compression and estimation of tissue strain thresholds with a liver finite element model. In: Proceedings of the 2013 International IRCOBI Conference on the Biomechanics of Injury. September 11-13, 2013; Gothenburg, Sweden.736-750.
2019	Op ‘t Eynde J, Eckersley CP, Bass CR. High-rate viscoelastic shear model of porcine skin, lung and liver tissue. In: Proceedings of the 2019 International IRCOBI Conference on the Biomechanics of Injury. September 11-13, 2019; Florence, Italy.475.
2021	Eaton MAK, Panzer MB, Salzar RS. Characterizing the response of lung tissue in shear and indentation quasi-static loading. In: Proceedings of the 2021 International IRCOBI Conference on the Biomechanics of Injury. September 8-10, 2021; Online.222-231.
2024	Caffrey JM, Thomas PK, Von Kleeck W III, Schap J, Davis M, Weaver CM, Kleinberger M, Gayzik FS. Development of a finite element ovine thorax model for use as a pre-test prediction tool in the study of high-rate non-penetrating blunt injuries. In: Proceedings of the 2024 International IRCOBI Conference on the Biomechanics of Injury. September 11-13, 2024; Stockholm, Sweden.764-775.
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