國立虎尾科技大學 |

Finite element simulation of nanoindentation in lamellar bone composites.

紀錄類型:	書目-語言資料,手稿 : Monograph/item
正題名/作者:	Finite element simulation of nanoindentation in lamellar bone composites./
作者:	Tilak, Karan.
面頁冊數:	1 online resource (91 pages)
附註:	Source: Masters Abstracts International, Volume: 56-04.
Contained By:	Masters Abstracts International56-04(E).
標題:	Mechanical engineering. -
電子資源:	click for full text (PQDT)
ISBN:	9781369776188

Finite element simulation of nanoindentation in lamellar bone composites.
Tilak, Karan.

Finite element simulation of nanoindentation in lamellar bone composites. - 1 online resource (91 pages)

Source: Masters Abstracts International, Volume: 56-04.

Thesis (M.S.)

Includes bibliographical references

Bone is a biological composite material with complex hierarchical structures from nanoscale to macroscale level. A number of research work has been done in multiscale modelling of bone mechanical behavior in different scale levels such as fibril scale, lamellae scale, osteon scale etc.,. Nonetheless, the ultrastructural property-structure of bone is still under investigation. In this study, we conducted several nanoindentation tests to further connect the relation of mechanical properties and the structure. A new multiscale model of lamellae ultrastructure was proposed. In the model, a partitioned geometry based axisymmetric specimen outlining the mineralized collagen fibrils, intrafibrillar matrix and extrafibrillar matrix were defined. The damaged plastic model criterion was employed to define the properties of lamellae constituents in the simulation. Then, a rigid berkovich contact indenter was assembled to simulate the process of nanoindentation to extract modulus and hardness values. The simulation results were compared with experimental data for gaining more insight about mechanical bone response. As age progresses, the simulation results indicated that change in distribution of volume fraction within the intrafibrillar and extrafibrillar matrix has noticeable impact on the modulus and hardness. Through the parametric study, it was found that the extrafibrillar matrix mainly contributes to the modulus and load carrying capacity of lamellae and mineralized collagen fibrils has dominant contribution to the hardness of the lamellae.

Electronic reproduction.
Ann Arbor, Mich. :
ProQuest,
2018

Mode of access: World Wide Web

ISBN: 9781369776188Subjects--Topical Terms:

557493
Mechanical engineering.
Index Terms--Genre/Form:

554714
Electronic books.

Finite element simulation of nanoindentation in lamellar bone composites.
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100 1 $a Tilak, Karan. $3 1178944
245 1 0 $a Finite element simulation of nanoindentation in lamellar bone composites.
264 0 $c 2017
300 $a 1 online resource (91 pages)
336 $a text $b txt $2 rdacontent
337 $a computer $b c $2 rdamedia
338 $a online resource $b cr $2 rdacarrier
500 $a Source: Masters Abstracts International, Volume: 56-04.
500 $a Advisers: Xiaowei Zeng; Xiaodu Wang.
502 $a Thesis (M.S.) $c The University of Texas at San Antonio $d 2017.
504 $a Includes bibliographical references
520 $a Bone is a biological composite material with complex hierarchical structures from nanoscale to macroscale level. A number of research work has been done in multiscale modelling of bone mechanical behavior in different scale levels such as fibril scale, lamellae scale, osteon scale etc.,. Nonetheless, the ultrastructural property-structure of bone is still under investigation. In this study, we conducted several nanoindentation tests to further connect the relation of mechanical properties and the structure. A new multiscale model of lamellae ultrastructure was proposed. In the model, a partitioned geometry based axisymmetric specimen outlining the mineralized collagen fibrils, intrafibrillar matrix and extrafibrillar matrix were defined. The damaged plastic model criterion was employed to define the properties of lamellae constituents in the simulation. Then, a rigid berkovich contact indenter was assembled to simulate the process of nanoindentation to extract modulus and hardness values. The simulation results were compared with experimental data for gaining more insight about mechanical bone response. As age progresses, the simulation results indicated that change in distribution of volume fraction within the intrafibrillar and extrafibrillar matrix has noticeable impact on the modulus and hardness. Through the parametric study, it was found that the extrafibrillar matrix mainly contributes to the modulus and load carrying capacity of lamellae and mineralized collagen fibrils has dominant contribution to the hardness of the lamellae.
533 $a Electronic reproduction. $b Ann Arbor, Mich. : $c ProQuest, $d 2018
538 $a Mode of access: World Wide Web
650 4 $a Mechanical engineering. $3 557493
650 4 $a Mechanics. $3 527684
650 4 $a Biomechanics. $3 565307
655 7 $a Electronic books. $2 local $3 554714
690 $a 0548
690 $a 0346
690 $a 0648
710 2 $a ProQuest Information and Learning Co. $3 1178819
710 2 $a The University of Texas at San Antonio. $b Mechanical Engineering. $3 1178945
773 0 $t Masters Abstracts International $g 56-04(E).
856 4 0 $u http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10277000 $z click for full text (PQDT)