2.24 Given reasonable values of the material parameters for bone, estimate the axial stress in your femur due to standing, walking, and running. Toward this end, estimate the increase in the applied load (in terms of body weight and in comparison to the load due to standing) due to walking and running. Once done, note that even though we did not discuss it, bone exhibits viscoelastic, not just elastic, behavior under certain conditions. In particular, the Young's modulus increases with increases in strain rate. It has been estimated, for example, that Ec, where is the extensional strain rate and c and d are material parameters. If E= 16 GPa at = 0.001 s-¹ (slow walking) and d~0.06, find the value of c. Next, compute the value of E for vigorous activity, with 0.01 s¹, and discuss how this would effect your first estimate for stress in your femur.

2.24 Given reasonable values of the material parameters for bone, estimate the axial stress in your femur due to standing, walking, and running. Toward this end, estimate the increase in the applied load (in terms of body weight and in comparison to the load due to standing) due to walking and running. Once done, note that even though we did not discuss it, bone exhibits viscoelastic, not just elastic, behavior under certain conditions. In particular, the Young's modulus increases with increases in strain rate. It has been estimated, for example, that Ec, where is the extensional strain rate and c and d are material parameters. If E= 16 GPa at = 0.001 s-¹ (slow walking) and d~0.06, find the value of c. Next, compute the value of E for vigorous activity, with 0.01 s¹, and discuss how this would effect your first estimate for stress in your femur.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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