CT Based Three Dimensional Geometric Model of Cervical Spine

2013 ◽  
Vol 273 ◽  
pp. 588-592
Author(s):  
Zhi Yuan Yan ◽  
Dong Mei Wu ◽  
Li Tao Zhang ◽  
Jun Zhao
Keyword(s):  
Finite Element ◽  
Cervical Spine ◽  
Geometric Model ◽  
Three Dimensional ◽  
Element Model ◽  
Skeletal System ◽  
High Quality ◽  
Element Analysis ◽  
Dimensional Reconstruction ◽  
The Finite Element Model

In order to obtain high-quality analytical results of the finite element model, it is essential to construct a three dimensional geometric model. The paper reconstructed an accurate three dimensional geometric model of cervical spine segments (C4-C7). The process of reconstruction included three-dimensional reconstruction, smooth processing, contour generation, grid generation and fitting surface. Moreover, the result of reconstruction was evaluated ultimately. The model was validated to be smooth and reasonable, and could meet the requirements of finite element analysis. The method is not merely applied to reconstruct the geometric model of the cervical spine. It is a way to construct the model of the skeletal system of the human body.

Finite Element Analysis of Fracture Process of Weld Specimen

2005 ◽  
Vol 297-300 ◽  
pp. 710-715 ◽  
Author(s):  
Sung Yong Yang ◽  
Byeong Choon Goo
Keyword(s):  
Finite Element ◽  
Fracture Process ◽  
Fatigue Behavior ◽  
Three Dimensional ◽  
Element Model ◽  
Welding Residual Stress ◽  
Zone Method ◽  
Element Analysis ◽  
Butt Weld ◽  
The Finite Element Model

Mechanical behavior and fracture process of weld specimens were analyzed by finite element method. Three-dimensional butt-weld specimen was modeled by two-dimensional approaches. Welding residual stress in the models was obtained by carrying out thermo-mechanical calculation. To take into account straight boundary lines of real weld specimen, the finite element model was constructed by using an iterative method. Cohesive zone method was applied to analyze fatigue behavior of the models.

Experiment Study and Finite Element Analysis of Single-Axis Acoustic Levitator

2010 ◽  
Vol 42 ◽  
pp. 449-452
Author(s):  
Bao Yu Du ◽  
Xiao Zhuo Xu ◽  
Bo Zhao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Experiment Study ◽  
Containerless Processing ◽  
Element Analysis ◽  
Dimensional Distribution ◽  
The Finite Element Model ◽  
Acoustic Levitator

A single-axis ultrasonic levitator applied in containerless processing of materials was introduced. It could suspend steel ball with density of 7.9 g/cm3 as well as else material samples easily. The finite element model of singe-axis ultrasonic levitator was developed to study the incident acoustic fields. Three-dimensional distribution of time-averaged potential is focused and the results are successful to confirm some experimental phenomena such as the movement of sample along concave reflector and the deviation of object near the reflector.

Patient-Specific Finite Element Model of a Spinal Tumor for Thermal Ablation

2011 ◽  
Vol 138-139 ◽  
pp. 937-940
Author(s):  
Jin Li Ding ◽  
Qun Nan ◽  
You Jun Liu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Numerical Simulations ◽  
Thermal Ablation ◽  
Three Dimensional ◽  
Element Model ◽  
Spinal Tumor ◽  
Patient Specific ◽  
Dimensional Reconstruction ◽  
The Finite Element Model

Objective: The purpose of this research is to establish a patient-specific finite element model of a spinal tumor and provide a preparation for the later numerical simulations. Method: Two steps, including three-dimensional reconstruction of the spinal tumor and its associated tissues, grid generations, are carried out for the establishment of the finite element model. Results: A patient-specific finite element model including a spinal tumor and its associated tissues is established. Conclusion: Patient-specific finite element model is a preparation for the surgical planning on thermal ablation, and the later numerical simulations will provide beneficial tutorials for surgeons.

Three Dimensional Structural Analysis of Complex Sluice Chamber Structures

2012 ◽  
Vol 170-173 ◽  
pp. 1971-1976
Author(s):  
Hong Yun Si ◽  
Min Chen
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Element Analysis ◽  
3D Finite Element ◽  
Massive Structure ◽  
Floor Structure ◽  
The Finite Element Model ◽  
Better Than

This paper mainly introduces how to use the software of Marc to calculate the displacement and stress of the sluice. The finite element model which concludes the sluice, piles and foundation was structured for calculation and analysis using the contact analysis function provided by the program. the displacement and stress of the massive structure was worked out to estimate its whole stability and evaluate workability state of the sluice under different structures. The example shows that the results of 3D finite element analysis can be used to accurately reflect the state of the buildings overall strength and displacement. The integral floor structure of contrary arch floor sluice is better than the separated floor structure to adapt to the foundation uneven settlement, but the separated floor structure of contrary arch floor sluice makes stress form more reasonable.

scholarly journals Finite element analysis of middle cervical spine

2021 ◽  
Author(s):  
Noushin Bahramshahi
Keyword(s):  
Spinal Cord ◽  
Finite Element ◽  
Cervical Spine ◽  
Three Dimensional ◽  
Spinal Column ◽  
Element Model ◽  
Published Data ◽  
Element Analysis ◽  
Flexion Extension ◽  
Disc Bulge

The spinal cord may be injured through various spinal column injury patterns. However, the relationship between column injury pattern and cord damage is not well understood. This investigation was conducted to develop a detailed, asymmetric three-dimensional finite element model of the C3-C5 cervical spine. The model was validated by comparing the simulation results obtained in this study with experimental published data. Upon validation of the model, the spinal cord was included into the model the simulation were performed. The disc bulge in the model with spinal cord were measured and compared with the results of the model without spinal cord. The results showed that inclusion of the spinal cord reduced the amount of lateral disc bulged. The results of the analysis of the model with spinal cord showed that in compression, the anterior surface of spinal cord sees more displacement, stress and strain that posterior surface and vice versa for flexion/extension.

Analysis of PZT Piezoelectric Ceramics Based on Finite Element Softeware ADINA

2011 ◽  
Vol 284-286 ◽  
pp. 1456-1459 ◽  
Author(s):  
Chang Song Zhang ◽  
Chen Jie Guo
Keyword(s):  
Finite Element ◽  
Boundary Conditions ◽  
Piezoelectric Ceramic ◽  
Geometric Model ◽  
Piezoelectric Ceramics ◽  
Element Model ◽  
Analysis Software ◽  
Element Analysis ◽  
Piezoelectric Structure ◽  
The Finite Element Model

Using traditional experiment means on piezoelectric ceramic device has certain limitations due to the complicated boundary conditions and stress situation. In this paper, the finite element model of piezoelectric ceramics in line with the experiment results was established according to piezoelectric structure field and the coupling of the electric field, deformation of representative PZT piezoelectric ceramics under the voltage was analysed in using finite element analysis software ADINA according to establishing geometric model, defining boundary conditions and materials, Coupling calculation. Consistency between simulation results and experimental results is improved and lay the foundation for the realization of the piezoelectric ceramic shapes and vibration control.

Research on Properties of PZT Piezoelectric Ceramics by Finite Element Softeware ADINA

2011 ◽  
Vol 130-134 ◽  
pp. 3233-3236
Author(s):  
Chen Jie Guo ◽  
Chang Song Zhang
Keyword(s):  
Finite Element ◽  
Geometric Model ◽  
Piezoelectric Ceramics ◽  
Element Model ◽  
Analysis Software ◽  
Element Analysis ◽  
Piezoelectric Structure ◽  
Coupling Calculation ◽  
Simulation Results ◽  
The Finite Element Model

In this paper, the finite element model of piezoelectric ceramics in line with the experiment results was established according to piezoelectric structure field and the coupling of the electric field, deformation of representative PZT piezoelectric ceramics under the voltage was analysed in using finite element analysis software ADINA according to establishing geometric model, defining boundary conditions and materials, Coupling calculation. Consistency between simulation results and experimental results is improved and lay the foundation for the realization of the piezoelectric ceramic shapes and vibration control.

Finite Element Analysis of Two Wheels Scooter Based on Solidworks

2014 ◽  
Vol 620 ◽  
pp. 24-27 ◽  
Author(s):  
Zhi Dong Huang ◽  
Yun Pu Du ◽  
Liang Zhao ◽  
Ke Gang Zhu ◽  
Hong Ji ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Strain Diagram ◽  
Three Dimensional Model ◽  
Element Analysis ◽  
Innovative Design ◽  
Set Up ◽  
The Finite Element Model

Based on Solidworks software, the three-dimensional model of two wheels scooter is set up. The finite element model of two wheels scooter is generated. Finite element analysis of telescopic mechanism of bar on two wheels scooter is investigated. The stress and strain of telescopic mechanism of bar is investigated. The stress diagram and the strain diagram are obtained. The method and the result can be used as a reference of innovative design of two wheels scooter.

Air Compressor Piston Finite Element Analysis Based on ANSYS

2015 ◽  
Vol 713-715 ◽  
pp. 15-17
Author(s):  
Xin Xiang Zhou ◽  
Tian Shu Cong ◽  
Xing Long Lei ◽  
Feng Zhen Yang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Mechanical Load ◽  
Geometric Model ◽  
Three Dimensional ◽  
Reference Value ◽  
Element Model ◽  
Deformation Analysis ◽  
Element Analysis ◽  
Air Compressor

The finite element analysis was carried out on the piston of WWD - 0.8/10 type air compressor under the action of mechanical load stress and deformation.Using three-dimensional modeling software Solidworks to establish a simplified geometric model of piston in air compressor ,Transform the model built in the three dimensional finite element analysis software into the finite element model for analysis,Determine the method of the piston by the mechanical load and boundary conditions,Completed the stress analysis and deformation analysis of the piston under the mechanical load ,The results of analysis of the piston design optimization has important reference value.

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