Design method for bare metal stents and finite element simulation

2019 ◽  
Author(s):  
Mihail Mihalev
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Design Method ◽  
Bare Metal Stents ◽  
Metal Stents ◽  
Bare Metal ◽  
Element Simulation

Relevance of Mesh Dimension Optimization, Geometry Simplification and Discretization Accuracy in the Study of Mechanical Behaviour of Bare Metal Stents

2011 ◽  
Vol 2 (1) ◽  
pp. 1-15
Author(s):  
Mariacristina Gagliardi
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Degrees Of Freedom ◽  
Bare Metal Stents ◽  
Nonlinear Finite Element ◽  
Metal Stents ◽  
Bare Metal ◽  
Nonlinear Finite Element Method ◽  
Convergence Test ◽  
Geometry Simplification

In this paper, the authors propose a set of analyses on the deployment of coronary stents by using a nonlinear finite element method. The goal is to propose a convergence test able to select the appropriate mesh dimension and a methodology to perform the simplification of structures composed of cyclically repeated units to reduce the number of degrees of freedom and the analysis run time. A systematic study, based on the analysis of seven meshes for each model, was performed, gradually reducing the element dimension. In addition, geometric models were simplified considering symmetries; adequate boundary conditions were applied and verified based on the results obtained from the analysis of the whole model.

Analyses of Performance-Based of Reinforced Concrete Beam

2011 ◽  
Vol 368-373 ◽  
pp. 967-970
Author(s):  
Hai Tao Wan ◽  
Hua Yuan
Keyword(s):  
Finite Element ◽  
Reinforced Concrete ◽  
Finite Element Simulation ◽  
Concrete Beam ◽  
Design Method ◽  
Reinforced Concrete Beam ◽  
Performance Parameters ◽  
Reinforced Concrete Frame ◽  
Element Simulation ◽  
Load Displacement

The software ABAQUS is used to perform the finite element simulation of a group of reinforced concrete beam tests. The load-displacement skeleton curves of the beams are obtained after the completion of the simulation. Test results and simulation results are compared, results showed that the finite element simulation can be more accurately simulate the test situation. Then, the software ABAQUS is also used to simulate different types of reinforced concrete frame beams, and access to load-displacement skeleton curves and moment – rotation curves of the beams. Reference to the advanced performance-based design method, the curve classified according to different factors. The performance parameters of beams are obtained from the curves. Performance parameters can provide quantitative reference index for performance evaluation of beam.

Optimization Design Method of the Pre-Manufactured Hole of Flanging

2013 ◽  
Vol 395-396 ◽  
pp. 1206-1211 ◽  
Author(s):  
Yang Li ◽  
Zhong Lei Wang ◽  
Xiao Li ◽  
Gang Cheng
Keyword(s):  
Finite Element ◽  
Optimal Design ◽  
Finite Element Simulation ◽  
Optimization Design ◽  
Design Method ◽  
Line Length ◽  
Theoretical Formula ◽  
Equal Area ◽  
Element Simulation ◽  
Optimal Design Method

For the difficulty of calculating the size of the Pre-Manufactured hole of flanging, the formula was derived by using the theory of equal line length and the theory of equal area. And the formula was verified by finite element simulation. Due to theoretical formula has certain error, the optimal design method based on interpolation was put forward and optimization design the size of the Pre-Manufactured hole of flanging. Engineering example shows that this optimization design method is accuracy and convergence speed, and it can quickly calculate the the size of the Pre-Manufactured hole of flanging.

Relevance of Mesh Dimension Optimization, Geometry Simplification and Discretization Accuracy in the Study of Mechanical Behaviour of Bare Metal Stents

2012 ◽  
pp. 263-277
Author(s):  
Mariacristina Gagliardi
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Systematic Study ◽  
Mechanical Behaviour ◽  
Bare Metal Stents ◽  
Coronary Stents ◽  
Metal Stents ◽  
Bare Metal ◽  
Convergence Test ◽  
Geometry Simplification

In this paper, a set of analyses on the deployment of coronary stents by using a nonlinear finite element method is proposed. The author proposes a convergence test able to select the appropriate mesh dimension and a methodology to perform the simplification of structures composed of cyclically repeated units to reduce the number of degree of freedom and the analysis run time. A systematic study, based on the analysis of seven meshes for each model, is performed, gradually reducing the element dimension. In addition, geometric models are simplified considering symmetries; adequate boundary conditions are applied and verified based on the results obtained from analysis of the whole model.

Relevance of Mesh Dimension Optimization, Geometry Simplification and Discretization Accuracy in the Study of Mechanical Behaviour of Bare Metal Stents

2012 ◽  
pp. 1-15
Author(s):  
Mariacristina Gagliardi
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Systematic Study ◽  
Mechanical Behaviour ◽  
Degrees Of Freedom ◽  
Bare Metal Stents ◽  
Metal Stents ◽  
Bare Metal ◽  
Convergence Test ◽  
Geometry Simplification

In this paper, the authors propose a set of analyses on the deployment of coronary stents by using a nonlinear finite element method. The goal is to propose a convergence test able to select the appropriate mesh dimension and a methodology to perform the simplification of structures composed of cyclically repeated units to reduce the number of degrees of freedom and the analysis run time. A systematic study, based on the analysis of seven meshes for each model, was performed, gradually reducing the element dimension. In addition, geometric models were simplified considering symmetries; adequate boundary conditions were applied and verified based on the results obtained from the analysis of the whole model.

Simulation and Experiment of New Longitudinal-Torsional Composite Ultrasonic Elliptical Vibrator

2011 ◽  
Vol 338 ◽  
pp. 79-83 ◽  
Author(s):  
Zhen Yin ◽  
Hua Li ◽  
Zi Yang Cao ◽  
Ou Xie ◽  
Yan Li
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Design Method ◽  
Laser Doppler Vibrometer ◽  
Torsional Vibrations ◽  
Impedance Analyzer ◽  
Elliptic Vibration ◽  
Element Simulation ◽  
Simulation And Experiment ◽  
Simulation Results

A new ultrasonic elliptic vibrator design method was proposed, the ultrasonic elliptic vibration was achieved by the structural curve of the longitudinal and torsional vibrations. The model, harmonic and transient analyses of the new longitudinal-torsional composite ultrasonic elliptical vibrator were performed by using the software ANSYS, the prototype of the new vibrator was tested by using impedance analyzer and PSV-400 laser Doppler vibrometer, the correctness of the finite element simulation results and the feasibility of the new longitudinal-torsional composite ultrasonic elliptical vibrator design methods were verified.

Relevance of Mesh Dimension Optimization, Geometry Simplification and Discretization Accuracy in the Study of Mechanical Behaviour of Bare Metal Stents

2010 ◽  
Vol 1 (4) ◽  
pp. 31-45 ◽  
Author(s):  
Mariacristina Gagliardi
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Systematic Study ◽  
Bare Metal Stents ◽  
Nonlinear Finite Element ◽  
Metal Stents ◽  
Bare Metal ◽  
Nonlinear Finite Element Method ◽  
Convergence Test ◽  
Geometry Simplification

In this paper, a set of analyses on the deployment of coronary stents by using a nonlinear finite element method is proposed. The author proposes a convergence test able to select the appropriate mesh dimension and a methodology to perform the simplification of structures composed of cyclically repeated units to reduce the number of degree of freedom and the analysis run time. A systematic study, based on the analysis of seven meshes for each model, is performed, gradually reducing the element dimension. In addition, geometric models are simplified considering symmetries; adequate boundary conditions are applied and verified based on the results obtained from analysis of the whole model.

Strength Analysis of Chassis Structure for Double Deck Bus

2013 ◽  
Vol 658 ◽  
pp. 408-413
Author(s):  
Perawat Boonpuek ◽  
Supakit Rooppakhun ◽  
Somsak Siwadamrongpong ◽  
Sarawut Bua-Ngam
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Safety Factor ◽  
Design Principle ◽  
Design Method ◽  
Frame Structure ◽  
Strength Analysis ◽  
Passenger Transportation ◽  
Element Simulation ◽  
Strength And Durability

Chassis strength and durability of local buses has been successively developed as many large automobiles due to reason for safe passenger transportation. This paper describes design method and strength analysis of chassis structure for double deck bus. C-beam and L-beam are created and assembled as for chassis frame structure by using CAD software. Finite element simulation is employed to evaluate total deformation and strength of designed bus chassis structure according to reliable safety factor from engineering design principle. Loading condition for simulation includes fully applied bending forces that are defined as heavy weight exerted on member joints. Finite element simulation result reveals that the fracture stress is not over than yield stress of the material. Safety factor is 2.16, which is the acceptable value under defined safety standard from department of land transport.

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