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Research Papers

Dynamic Tensile Response of Porcine Muscle

[+] Author and Article Information
Xu Nie1

School of Materials Engineering, Purdue University, West Lafayette, IN 47907xnie@purdue.edu

Jen-I Cheng

School of Aeronautics and Astronautics, Purdue University, West Lafayette, IN 47907

Weinong W. Chen

School of Materials Engineering and School of Aeronautics and Astronautics, Purdue University, West Lafayette, IN 47907

Tusit Weerasooriya

 US Army Research Laboratory, Aberdeen Proving Ground, MD 21005

1

Corresponding author.

J. Appl. Mech 78(2), 021009 (Nov 08, 2010) (5 pages) doi:10.1115/1.4002580 History: Received May 28, 2010; Revised September 07, 2010; Posted September 17, 2010; Published November 08, 2010; Online November 08, 2010

The stress-strain response of a porcine muscle along and perpendicular to the muscle fiber direction was characterized over a wide range of strain rates under uniaxial tension. A modified Kolsky tension bar was used to conduct the experiments at high strain rates. Tubular specimen geometry was used to achieve uniform loading within the specimen and to minimize lateral inertia effect. Loading pulse was controlled to facilitate constant strain rates and dynamic stress equilibrium. Quasi-static experiments were also performed to explore the rate effects over a wider range of strain rates. The results show that the nonlinear tensile stress-strain responses in both directions along and perpendicular to the fibers are highly sensitive to strain rates. Compared with high-rate compression response, the strain rate sensitivity in the tensile test is less dependent on the fiber orientation to the loading direction.

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References

Figures

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Figure 7

Stress-strain curves of the porcine muscle (a) along fiber direction and (b) perpendicular to fiber direction at various strain rates

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Figure 8

Comparison of stress-strain curves of the porcine muscle between AL and TR fiber directions specimen under strain rates (a) 2100/s, (b) 1400/s, (c) 700/s, and (d) 0.4/s and 0.05/s

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Figure 9

Strain rate effects of the porcine muscle (a) along fiber direction and (b) perpendicular to fiber direction

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Figure 6

Typical raw and smoothed stress-strain curves

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Figure 5

Strain rate and strain histories in the porcine muscle specimen

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Figure 4

Dynamic stress equilibrium process in the porcine muscle specimen

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Figure 3

Experimental record of incident, reflected, and transmitted pulses from the modified SHTB experiment on a porcine muscle specimen

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Figure 2

Schematic of a tubular porcine muscle specimen used for dynamic tensile experiments

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Figure 1

Schematic of a modified SHTB for testing soft biological tissues

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