Methodology for Fatigue Life Assessment of a Converter ID Fan Impeller Using the Finite Element Method: A Case Study

2021 ◽  
Author(s):  
A. Ortigosa
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Fatigue Life ◽  
Life Assessment ◽  
The Finite Element Method ◽  
Fatigue Life Assessment ◽  
Element Method

APPLICATION OF THE FINITE ELEMENT METHOD IN THE FATIGUE LIFE PREDICTION OF A STENT FOR A PERCUTANEOUS HEART VALVE

2012 ◽  
Vol 12 (01) ◽  
pp. 1250007 ◽  
Author(s):  
A. ESTERHUYSE ◽  
K. VAN DER WESTHUIZEN ◽  
A. DOUBELL ◽  
H. WEICH ◽  
C. SCHEFFER ◽  
...  
Keyword(s):  
Blood Pressure ◽  
Finite Element Method ◽  
Finite Element ◽  
Fatigue Life ◽  
Heart Valve ◽  
Life Prediction ◽  
Fatigue Life Prediction ◽  
Life Assessment ◽  
The Finite Element Method ◽  
Element Method

The fatigue failure of the stent component of a percutaneous aortic heart valve (PAHV) is an event that could be fatal to the patient. Therefore, the fatigue life prediction of a stent intended for application in a PAHV is a major consideration during the design and development phase of the device. Since the stent component will be subjected to both cyclic blood pressure as well as cyclic valve-leaflet forces, the combined effect of these loads must be taken into account for the analysis of the fatigue life. This paper expands on a methodology developed by Marrey et al.10 to incorporate the combined loading of both the cyclic blood pressure as well as the cyclic leaflet forces in the fatigue life assessment of stents intended for application in percutaneous aortic heart valves. It was found that the developed methodology, which utilizes the finite element method (FEM), provides a simple and cost-effective tool to quantitatively determine the fatigue resistance of the stent component, thereby enabling the designer to compare different stent designs with respect to their resistance against fatigue. Two different stent designs were analyzed using this approach and it was found that they exhibited similar resistances to fatigue and that resistance to fatigue is influenced by strut width.

Frontal Impact Analysis of an Interprovincial Bus Using the Finite Element Method: Case Study in Ecuador

2020 ◽  
pp. 312-320
Author(s):  
Luis Santos-Correa ◽  
Diego Pineda-Maigua ◽  
Fernando Ortega-Loza ◽  
Jhonatan Meza-Cartagena ◽  
Ignacio Abril-Naranjo ◽  
...  
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Impact Analysis ◽  
Frontal Impact ◽  
The Finite Element Method ◽  
Element Method

scholarly journals Cold Expansion Process with Multiple Balls—Numerical Simulation and Comparison with Single Ball and Tapered Mandrels

Materials ◽  
2020 ◽  
Vol 13 (23) ◽  
pp. 5536
Author(s):  
David Curto-Cárdenas ◽  
Jose Calaf-Chica ◽  
Pedro Miguel Bravo Díez ◽  
Mónica Preciado Calzada ◽  
Maria-Jose Garcia-Tarrago
Keyword(s):  
Numerical Simulation ◽  
Finite Element Method ◽  
Finite Element ◽  
Fatigue Life ◽  
Experimental Tests ◽  
The Finite Element Method ◽  
Expansion Process ◽  
Cold Expansion ◽  
Hoop Stresses ◽  
Element Method

Cold expansion technology is an extended method used in aeronautics to increase fatigue life of holes and hence extending inspection intervals. During the cold expansion process, a mechanical mandrel is forced to pass along the hole generating compressive residual hoop stresses. The most widely accepted geometry for this mandrel is the tapered one and simpler options like balls have generally been rejected based on the non-conforming residual hoop stresses derived from their use. In this investigation a novelty process using multiple balls with incremental interference, instead of a single one, was simulated. Experimental tests were performed to validate the finite element method (FEM) models and residual hoop stresses from multiple balls simulation were compared with one ball and tapered mandrel simulations. Results showed that the use of three incremental balls significantly reduced the magnitude of non-conforming residual hoop stresses and the extension of these detrimental zone.

A Case Study of Conceptual Design Analysis of Stove Brackets Using Finite Element Method

2008 ◽  
Author(s):  
Diego Va´zquez ◽  
Hugo Medelli´n ◽  
Antonio Ca´rdenas ◽  
Alonso de la Garza
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Experimental Analysis ◽  
Mechanical Performance ◽  
Fem Simulation ◽  
Production Costs ◽  
The Finite Element Method ◽  
Design Change ◽  
Element Method

Advanced engineering techniques for analysis are modern tools used for companies to enhance the design and manufacturing cycles of new or existing products. Finite element method has become one of the most used tools in the design process of products. This paper presents a case study regarding a design change of the brackets that support the gas jet in stoves. Using the finite element method, the mechanical performance of the existing brackets is compared with the performance of the new proposed bracket. This comparison is used to evaluate the feasibility of carrying out the design change. The benefit of the new design is a reduction of materials, production costs and production times. Experimental analysis of the materials and the validation of the finite element solutions were also performed. The results of the experimental analysis and FEM simulation are discussed and presented. Finally, the performance of the existing and the new brackets under several load cases is compared and the results suggest that the product design change is feasible.

Studies on the Influence of the Frame Structure’s Deformation of the Automatic Hydraulic Tile Press on Energy Consumption

2011 ◽  
Vol 103 ◽  
pp. 41-45
Author(s):  
Zhi Cheng Huang ◽  
Ze Lun Li
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Energy Consumption ◽  
The Finite Element Method ◽  
Future Design ◽  
Selection Of ◽  
Element Method

The influence of the frame structure’s deformation of the automatic hydraulic tile press on energy consumption has long been neglected. In this paper, a case study in two common beam-column types hydraulic automatic tile press, get the deformations of the columns produced by the tensile by using the finite element method, and then calculate their energy consumption due to deformations. Through analysis and comparison, provide a reference for future design and selection of the hydraulic automatic tile press.

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