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Unformatted text preview: ralized, assume its elastic modulus is 12 GPa. Assume
concentric circular cross-sections of the bone and implant. Page 5 of 10 ME/BioE C176 Final Exam, Spring 2001 Page 6 of 10 Name:__________________________________ ME/BioE C176 Final Exam, Spring 2001 Page 7 of 10 Name:__________________________________ ME/BioE C176 Final Exam, Spring 2001 Name:__________________________________ 4. Miscellaneous [28 points total]
[5 points] Fill in the following table of elastic modulus properties with approximate values:
Material Young’s modulus
(MPa) Cortical bone †
CoCr alloy, cast
CoCr alloy, forged
CoCr alloy, HIPed††
† for bone, give a typical mean value for the longitudinal direction.
†† HIPed — hot isostatically pressed.
[15 points] The general time-dependent behavior of many soft tissues, and even bone, can be
modeled approximately using spring-dashpot models, such as that shown below.
Show that the governing differential equation relating stress s to strain e for this model is of the form:
+ as= b
by deriving expressions for the constants a, b, and c in terms of EH, EK V, and m. Page 8 of 10 ME/BioE C176 Final Exam, Spring 2001 Page 9 of 10 Name:__________________________________ ME/BioE C17...
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This document was uploaded on 03/08/2014 for the course BIOE 119 at University of California, Berkeley.
- Fall '10