Effect of ossicular-joint flexibility on bone conduction hearing—A finite-element model analysis

2017 ◽  
Vol 141 (5) ◽  
pp. 3896-3896
Author(s):  
Xiying Guan ◽  
Sunil Puria
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Bone Conduction ◽  
Element Model ◽  
Model Analysis ◽  
Joint Flexibility ◽  
Bone Conduction Hearing

scholarly journals Simulating large emitters using CMAQ and a local scale finite element model. Analysis of the surroundings of Barcelona

2017 ◽  
Vol 62 (2/3/4) ◽  
pp. 155
Author(s):  
Albert Oliver ◽  
Raúl Arasa ◽  
Agustí Pérez Foguet ◽  
Mª Ángeles González
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Element Model ◽  
Model Analysis ◽  
Local Scale

Biomechanical Effects of Chiropractic-Based Distraction Therapy on the Behavior of Healthy and Degenerated Cervical Discs: A Finite Element Model Analysis

2009 ◽  
Author(s):  
Mozammil Hussain ◽  
Ralph E. Gay ◽  
Kai-Nan An ◽  
Rodger Tepe
Keyword(s):  
Finite Element ◽  
Cervical Spine ◽  
Neck Pain ◽  
Finite Element Model ◽  
Disc Degeneration ◽  
Element Model ◽  
Model Analysis ◽  
Biochemical Changes ◽  
Tissue Properties ◽  
Disc Tissue

Many neck pain complaints are associated with degenerated discs in cervical spine. Disc degeneration (DD) consists of cascading stages of events with complex changes in disc tissue properties. This results in deterioration of the ability of the disc to perform its function normally. Several biomechanical and biochemical changes occur in the disc with degeneration. Increase in motion segment stiffness and peak stresses in the posterior annulus are some of the gross changes that occur in the disc with degeneration.

The Vibration Analysis of Bone Conduction for Bone-Anchored Hearing Aids: In Vivo Human Temporal Bone

2011 ◽  
Vol 145 ◽  
pp. 93-98
Author(s):  
Jen Fang Yu ◽  
Zi Xiang Wei ◽  
Chin Kuo Chen ◽  
Ching I Chen
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Temporal Bone ◽  
Hearing Aids ◽  
Bone Conduction ◽  
Element Model ◽  
Second Phase ◽  
Center Line ◽  
The Finite Element Model

This study constructed a 3D finite element model of temporal bone non-invasively, based on the computed tomography scan image of anin vivotemporal bone. To observe the geometry and measurements of the temporal bone, the finite element model was built using ANSYS®. The finite element model involved two phases. The first phase entailed discussing the natural vibration frequencies and vibration mode of the temporal bone. The second phase involved investigating the harmonic response. The base center and center line were established in the external auditory meatus and the 0 degree direction, respectively. The amplitude force was applied along the center line and at 15 degrees from center line and at distances of 30 mm, 35 mm, and 40 mm from the center point of ear canal. The amplitude of the bone-anchored hearing aids was approximately 550 g when stimulated by the vibrator. This paper discusses the frequency responses and characteristics of the BAHA vibrator on the mastoid of the temporal bone at the frequencies of 125 Hz, 250 Hz, 500 Hz, 750 Hz, 1 kHz, 2 kHz, 3 kHz, 4 kHz, 5 kHz, 6 kHz, 7 kHz, 8 kHz. Based on the results of conducting modal analysis of the temporal bone, 11 natural frequencies, 125 Hz, 250 Hz, 500 Hz, 750 Hz, 1 k Hz, 2 kHz, 3 kHz, 4 kHz, 5 kHz, 6 kHz, and 7 kHz, included the stimuli frequencies of pure tone audiometry. Based on the results obtained by conducting harmonic analysis of the temporal bone, the performance of bone conduction at 35 mm and at 15 degrees was higher than those at 0 and -15 degrees.

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