Investigating the Relationship Between Material Property Axes and Strain Orientations in Cebus Apella Crania

Dzialo, Christine M

Publication:
Investigating the Relationship Between Material Property Axes and Strain Orientations in Cebus Apella Crania

dc.contributor.advisor	Ian R. Grosse
dc.contributor.advisor	Robert Hyers
dc.contributor.author	Dzialo, Christine M
dc.contributor.department	University of Massachusetts Amherst
dc.contributor.department	Mechanical Engineering
dc.date	2023-09-23T07:28:56.000
dc.date.accessioned	2024-04-26T21:19:05Z
dc.date.available	2012-08-25T00:00:00Z
dc.date.issued	2012-01-01
dc.date.submitted	September
dc.description.abstract	Probabilistic finite element analysis was used to determine whether there is a statistically significant relationship between maximum principal strain orientations and orthotropic material stiffness orientations in a primate cranium during mastication. We first sought to validate our cranium finite element model by sampling in-vivo strain and in-vivo muscle activation data during specimen mastication. A comparison of in vivo and finite element predicted (i.e. in silico) strains was performed to establish the realism of the FEM model. To the best of our knowledge, this thesis presents the world’s only complete in-vivo coupled with in-vitro validation data set of a primate cranium FEM. Our results indicate that a validated FEM of a Cebus apella cranium was achieved. Giving collaborating anthropologists, biologists, and engineers the confidence that these models have sufficient accuracy to address the research questions pertaining to cranial structure morphology. Probabilistic finite element analysis design was then utilized to determine the dependence of maximum principal strain orientations on material stiffness orientations in particular craniofacial regions during mastication. It was discovered that the maximum principal strain orientations are more dependent on loading conditions and/or the shape of and location in the cranium rather than the material stiffness orientation of a particular region. It was also uncovered that the material stiffness orientations are not developed in a way that is optimal for feeding biomechanics from the perspective of minimization of total elastic strain energy. Results from this research will provide insights into the co-evolution of bone morphology and material properties in the facial skeleton.
dc.description.degree	Master of Science in Mechanical Engineering (M.S.M.E.)
dc.identifier.doi	https://doi.org/10.7275/3259472
dc.identifier.uri	https://hdl.handle.net/20.500.14394/47839
dc.relation.url	https://scholarworks.umass.edu/cgi/viewcontent.cgi?article=2052&context=theses&unstamped=1
dc.source.status	published
dc.subject	Cebus apella
dc.subject	finite element analysis
dc.subject	probabilistic design
dc.subject	material stiffness orientation
dc.subject	cranial structure morphology
dc.subject	maximum principal strain orientation
dc.subject	Biological and Physical Anthropology
dc.subject	Biomechanical Engineering
dc.title	Investigating the Relationship Between Material Property Axes and Strain Orientations in Cebus Apella Crania
dc.type	open
dc.type	article
dc.type	thesis
digcom.contributor.author	isAuthorOfPublication\|email:christinedzialo@gmail.com\|institution:University of Massachusetts Amherst\|Dzialo, Christine M
digcom.date.embargo	2012-08-25T00:00:00-07:00
digcom.identifier	theses/904
digcom.identifier.contextkey	3259472
digcom.identifier.submissionpath	theses/904
dspace.entity.type	Publication