STRESS ANALYSIS To characterize the stiffness and strength of a porcine Achilles

Question

STRESS ANALYSIS

To characterize the stiffness and strength of a porcine Achilles tendon, a student stretched one in a uniaxial testing device (Fig 8.2 below). The sample had an oval cross-section (Fig 8.1 below). The bottom clamp was connected to a fixed cross-bar; the top clamp was connected to a force transducer to measure the load, F, which was affixed to a moving cross-bar. The extension, AL, of the tissue was determined from the motion of the crossbar. The initial length (gauge length) was Lo

Explanation / Answer

The incremental modulus in low module region is 3.7525

and in the high modulus is 6.235

the largest strain it can experience is 3.2 mm

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