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A 3D biomechanical model for analysi...

Tselung, Seldon Tenzin.

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A 3D biomechanical model for analysis of upper jaw protrusion in carassius auratus (goldfish).

紀錄類型:	書目-電子資源 : Monograph/item
正題名/作者:	A 3D biomechanical model for analysis of upper jaw protrusion in carassius auratus (goldfish)./
作者:	Tselung, Seldon Tenzin.
出版者:	Ann Arbor : ProQuest Dissertations & Theses, : 2016,
面頁冊數:	115 p.
附註:	Source: Masters Abstracts International, Volume: 56-02.
Contained By:	Masters Abstracts International56-02(E).
標題:	Biomechanics. -
電子資源:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10240427
ISBN:	9781369356465

A 3D biomechanical model for analysis of upper jaw protrusion in carassius auratus (goldfish).
Tselung, Seldon Tenzin.

A 3D biomechanical model for analysis of upper jaw protrusion in carassius auratus (goldfish). - Ann Arbor : ProQuest Dissertations & Theses, 2016 - 115 p.

Source: Masters Abstracts International, Volume: 56-02.

Thesis (M.S.)--Rochester Institute of Technology, 2016.

This thesis studies upper jaw protrusion in carassius auratus (goldfish), a type of Cypriniformes. The presence of a unique sesamoid bone called kinethmoid, suspended by a network of ligaments, allows for more flexibility and longer periods of sustained suction flow speeds in Cypriniformes. Previous researchers used XROMM software to visualize highly accurate (+/-0.1 mm) re-animations of a carp's 3D bones in vivo and EMG graphs to visualize muscle activation patterns. Based on those results, this thesis takes a reverse approach by building a working 3D model of a goldfish's mouth and simulating it using Adams, a multibody dynamics software program. Since all buccal (mouth) parts act in synchrony during each feeding session, this simulation process allows us to vary one parameter at a time and observe how changes in each parameter affect the overall feeding process. Individual bone measurements taken in the lab were translated into a 3D model using Solidworks. The model consisted of five main bones, two maxillary muscles, A1alpha and A1beta; and a network of ligaments that were modelled as linear springs. Four parameters were tested against mouth opening results. They were A1alpha, A1beta, initial kinethmoid position and initial dentary position. The initial position of the dentary was a primary influence in opening the mouth regardless of the amount of A1 maxillary forces applied. At a minimum dentary angle of 49°, the mouth opened for as little as 1 dyne of A1beta force. Also, increasing values of A1beta as opposed to changing kinethmoid's starting position had a greater effect on dentary rotation. A1alpha was the main driver in rotating the kinethmoid while increasing initial kinethmoid position from 130° to 150° increased the total rotational displacement of the kinethmoid by about 45°. All angles are measured counterclockwise to the part's anteroposterior axis. Both actions led to protruding the premaxilla forward and opening of the mouth. The 5 kinematic patterns were on par with past experimental results, thereby validating the approach taken to creating a realistic 3D model.

ISBN: 9781369356465Subjects--Topical Terms:

548685
Biomechanics.

A 3D biomechanical model for analysis of upper jaw protrusion in carassius auratus (goldfish).
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520 $a This thesis studies upper jaw protrusion in carassius auratus (goldfish), a type of Cypriniformes. The presence of a unique sesamoid bone called kinethmoid, suspended by a network of ligaments, allows for more flexibility and longer periods of sustained suction flow speeds in Cypriniformes. Previous researchers used XROMM software to visualize highly accurate (+/-0.1 mm) re-animations of a carp's 3D bones in vivo and EMG graphs to visualize muscle activation patterns. Based on those results, this thesis takes a reverse approach by building a working 3D model of a goldfish's mouth and simulating it using Adams, a multibody dynamics software program. Since all buccal (mouth) parts act in synchrony during each feeding session, this simulation process allows us to vary one parameter at a time and observe how changes in each parameter affect the overall feeding process. Individual bone measurements taken in the lab were translated into a 3D model using Solidworks. The model consisted of five main bones, two maxillary muscles, A1alpha and A1beta; and a network of ligaments that were modelled as linear springs. Four parameters were tested against mouth opening results. They were A1alpha, A1beta, initial kinethmoid position and initial dentary position. The initial position of the dentary was a primary influence in opening the mouth regardless of the amount of A1 maxillary forces applied. At a minimum dentary angle of 49°, the mouth opened for as little as 1 dyne of A1beta force. Also, increasing values of A1beta as opposed to changing kinethmoid's starting position had a greater effect on dentary rotation. A1alpha was the main driver in rotating the kinethmoid while increasing initial kinethmoid position from 130° to 150° increased the total rotational displacement of the kinethmoid by about 45°. All angles are measured counterclockwise to the part's anteroposterior axis. Both actions led to protruding the premaxilla forward and opening of the mouth. The 5 kinematic patterns were on par with past experimental results, thereby validating the approach taken to creating a realistic 3D model.
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