scholarly journals Finite Element Analysis of Mechanical Characteristics of Arch Ribs under Vehicle Impact

2019 ◽  
Vol 330 ◽  
pp. 022034
Author(s):  
Siyuan Chen ◽  
Zhou Chen ◽  
Xiaoqing Zhang ◽  
Haoyu Guo
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Mechanical Characteristics ◽  
Element Analysis ◽  
Vehicle Impact

scholarly journals A Study on Designing Balloon Expandable Magnesium Alloy Stent for Optimization of Mechanical Characteristics

Proceedings ◽  
2018 ◽  
Vol 2 (8) ◽  
pp. 523
Author(s):  
Ichiro Shimizu ◽  
Akira Wada ◽  
Makoto Sasaki
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Magnesium Alloy ◽  
Magnesium Alloys ◽  
Study Design ◽  
Mechanical Characteristics ◽  
Design Parameters ◽  
Optimized Design ◽  
Element Analysis ◽  
Biodegradable Properties

Recently, the demand for a bio-absorbable coronary stent to promote recovery after an operation has increased. An option for such a stent is one made of a magnesium alloy, which has biodegradable properties. However, magnesium alloys have lower rigidity and lower ductility than other metals; as such, an appropriate stent structure is required to ensure radial rigidity. In this study, design parameters for an AZ31 magnesium alloy stent with sufficient radial rigidity were investigated. The necessary radial rigidity was determined by comparison tests against commercially available stents. The design parameters of the cell struts were selected and the optimum values to achieve high radial rigidity were investigated by means of elastic–plastic finite element analysis. Finally, a trial model stent based on the optimized design parameters was produced. It was confirmed that the model had sufficient radial rigidity, with no fracturing evident during crimping and expansion processes.

scholarly journals The construction technology and finite element analysis of the whole lifting of large grid

2021 ◽  
Vol 272 ◽  
pp. 02011
Author(s):  
Deyuan Deng ◽  
Weixiong Zhang ◽  
Zixuan Li ◽  
Guangjun Li ◽  
TianFang Mo ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Mechanical Characteristics ◽  
Construction Technology ◽  
Practical Application ◽  
Safety Factors ◽  
Element Analysis ◽  
Static Mechanical ◽  
Application Requirements ◽  
Large Grid

Taking a large grid frame in a maintenance hangar of Guangzhou Baiyun Airport as the research object, the construction steps of lifting the grid structure are briefly described, and the static mechanical characteristics, dynamic mechanical characteristics and stability of the large grid frame were studied by using Midas/Civil finite element analysis software, which meets the design and the practical application requirements. Since its first six orders safety factors are greater than 4. The stress state of the nodes at the important supports in the grid is mainly controlled by axial force.

scholarly journals A Study on the Mechanical Characteristics of String Planes of Badminton Racquets by Nonlinear Finite Element Analysis

Proceedings ◽  
2020 ◽  
Vol 49 (1) ◽  
pp. 42
Author(s):  
Masatomo Takizawa ◽  
Akihiro Matsuda ◽  
Tomohiro Hashiguchi
Keyword(s):  
Numerical Simulation ◽  
Finite Element Analysis ◽  
Finite Element ◽  
Mechanical Characteristics ◽  
Dynamic Effect ◽  
Elastic Model ◽  
Geometrical Shape ◽  
Element Analysis ◽  
Simulation Code ◽  
Yeoh Model

In this study, the finite element analysis of the string planes of badminton racquets was investigated to evaluate the effect of the mechanical characteristics of polymer strings. The nonlinear mechanical characteristics of commercially available polymer strings were obtained by the uniaxial loading tests experimentally. The effects of the strain rate on the mechanical characteristics of the polymer strings were also investigated to consider the dynamic effect on the numerical simulation. The numerical simulation code used to analyze the string planes of the badminton racquets was developed originally. A nonlinear elastic model (Yeoh model) was applied to the mechanical characteristics of the polymer string. Simulated results were compared with the experimental results. The effect of the mechanical characteristics of the polymer strings and the geometrical shape of the badminton racquets on the out-of-plane stiffnesses were investigated.

FINITE ELEMENT ANALYSIS OF THE MECHANICAL CHARACTERISTICS OF GLAUCOMA

2016 ◽  
Vol 16 (04) ◽  
pp. 1650060 ◽  
Author(s):  
PEISHAN DAI ◽  
HAN HAN ◽  
YALI ZHAO ◽  
MIN FAN
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Optic Nerve ◽  
Finite Element Model ◽  
Mechanical Characteristics ◽  
Element Model ◽  
Finite Element Method Result ◽  
Element Analysis ◽  
Human Eye ◽  
Geometry Model

Purpose: Construct a finite element model of the human eye to quantitatively analyze the mechanical characteristics of the human eye, especially the glaucoma damage process of the optic nerve head (ONH). Method: First, the geometry model of the human eye with nonuniform thickness was established based on a reasonable hypothesis and assumptions. Because the ONH is an important factor for glaucoma, we refine the structure of the ONH with lamina cribrosa. Then, mesh division was applied for finite element analysis. To simplify the complexity of the analysis, the materials of the model were assumed to be isotropic linear elastic materials, and physical properties such as Young’s modulus and Poisson’s ratio were set according to published literature. Next, proper constraints and loads were applied to the model and solved with a finite element method. Result: A finite element model of the human eye was created to simulate the mechanical characteristics of the eye structures under high intraocular pressure (IOP). The ONH depressed 1.057[Formula: see text]mm under 0.009[Formula: see text]MPa pressure to simulate high IOP. Conclusion: The constructed model is able to quantitatively simulate excavation of the optic disc and damage of the optic nerve. The result proved Houcheng Liang’s hypothesis about the ONH damage mechanism in glaucoma.

scholarly journals Analysis on mechanical characteristics of brake wheel and brake shoe of elevator traction machine

2021 ◽  
Vol 2125 (1) ◽  
pp. 012046
Author(s):  
Tao Jiang ◽  
Ziwei Wang ◽  
Zhaolin Ren ◽  
Guangjun Liu ◽  
Facai Ren
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Mechanical Characteristics ◽  
Element Analysis ◽  
Brake Shoe ◽  
Emergency Braking ◽  
The Finite Element Analysis ◽  
Calculation Results ◽  
The Moment ◽  
The Impact

Abstract This paper analyzes the change of brake torque during normal stop and emergency braking of elevator. Taking the permanent magnet synchronous elevator traction machine as an example, the mechanical characteristics of the brake wheel and brake shoe on the brake under emergency braking are analyzed. According to the finite element analysis and calculation results, the impact and stress of the elevator are the largest at the moment of emergency braking, reaching 270.3MPa, and the strain increases gradually. The analysis results can provide reference for the design and verification of brake wheel and brake shoe of elevator traction machine.

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