Finite element analysis of stent deployment: understanding …

Objectives: To analyze factors responsible for stent fracture in percutaneous pulmonary valve implantation (PPVI) by finite element method. Background: PPVI is an interventional catheter-based technique for treating significant pulmonary valve disease. Stent fracture is a recognized complication. Methods: Three different stent models were created: (1) …

Stress Analysis of an Automotive Engine Valve by Finite Element …

 — A detailed study, by finite element method (FEM), was conducted on an automotive engine exhaust valve subject to various loads (i.e. spring load, combustion pressure load, temperature profile and valve impact closing velocity). The 3D nonlinear (contact element and temperature-dependent) thermal-mec

The Failure Finite Element Analysis of Pump Collision with Valve …

 — A law of pump valve motion in one stroke was acquired through the establishment of the motion equations of the pump valve in the oil well pump by using ANSYS / LS-DYNA software and it was shown that the groove valve cover has the stronger impact than the extended grooved valve housing. The three element drive pump failure …

Finite element analysis comparing WaveOne, WaveOne Gold, Reciproc …

To evaluate the bending and torsional properties of four nickel-titanium endodontic files, we simulated and compared WaveOne® primary size 25 with 0.07 taper, WaveOne Gold® primary size 25 with 0.07 taper, Reciproc® primary size 25 with 0.08 taper, and Reciproc Blue® primary size 25 with 0.08 taper. …

Pinch Valves: Mega Guide – Working, Parts, …

Manual Pinch Valve. Simple Design: Manual pinch valves have a straightforward design, consisting of a rubber sleeve that can be pinched to control the flow of fluid.; Cost-Effective: These valves are cost-effective …

A strain-based finite element model for calcification

 — Calcific aortic valve disease (CAVD) is a serious disease affecting the aging population. A complex interaction between biochemicals, cells, and mechanical cues affects CAVD initiation and progression. ... A strain-based finite element model for calcification progression in aortic valves J Biomech. 2017 Dec 8;65:216-220. doi: 10.1016/j.jbiomech ...

FEM Analysis and Structure Improvement of Pinch Valve

The stress and strain distributions of the rubber hose, while completely closed, were obtained by means of FEM (Finite Element Method) analysis. Parameters of hose …

Optimal design of magnetorheological valves via a finite element …

 — [15] Li W H, Du H and Guo N Q 2003 Finite element analysis and simulation evaluation of a magnetorheological valve Int. J. Adv. Manuf. Technol. 21 438-45. Crossref; Google Scholar [16] Rosenfield N C and Wereley N M 2004 Volume-constrained optimization of magnetorheological and electrorheological valves and dampers Smart …

A parametric finite element method for solid-state …

 — A parametric finite element method for solid-state dewetting problems with anisotropic surface energies. Author links open overlay panel Weizhu Bao a, Wei Jiang b c, Yan Wang a, Quan Zhao a. ... The pinch-off time t = 371 we obtained by using PFEM for this example is very close to the result t = 374 by using marker-particle methods in [22].

Packing a pinch: functional implications of chela shapes in …

Within Contact Areas, marc mentat treats elements that are closer to each other than a defined threshold value (1/20 of the size of the smallest element) as contacting elements. For the finite element analysis, the contact between finger and manus was treated as two-sided (i.e. the finger contacts the manus and vice versa) and we used the ...

Mining and Ore Processing: Valves for …

Slurry Knife Gate Valves. Red Valve's control pinch valves are ideal for the demanding needs of the mining and ore processing industry.

Finite Element Analysis of Large-Span Valve Hall Structure …

 — where n denotes the frequency, ( {overline{v}}_{10} ) is the average wind velocity at 10 m height during 10 min, K is the ground roughness coefficient, which varies between 0.003 and 0.03, and ( x=1200n/{overline{v}}_{10} ).. In the finite element analysis of structural dynamics, random wind field is adopted, and the power spectrum is set to …

Finite Elements | Brilliant Math & Science Wiki

The finite element method (FEM) is a numerical method for solving partial differential equations (PDE) that occur in problems of engineering and mathematical physics.The basic concept of FEM is to divide continuous bodies into a mesh of simple parts, the so-called finite elements. Functions are represented by their values at certain support points of the …

Finite element analysis of briquetting of iron ore fines

 — The briquetting behaviour of iron ore fines was investigated using the Finite Element Method (FEM). The Drucker-Prager Cap (DPC) model was utilized and the parameters were determined by conducting physical experiments of die compaction, uniaxial compression and diametrical compression. The evolutions of briquette structure …

Nonlinear solid finite element analysis of mitral valves with

An incompressible transversely isotropic hyperelastic material for solid finite element analysis of a porcine mitral valve response is described. The material model implementation is checked in single element tests and compared with a membrane implementation in an out-of-plane loading test to study how the layered structures modify the stress response …

Investigation of Flow Structure Inside Spool Valve with Fem …

In this paper, the finite element method (FEM) and particle image velocimetry (PIV) techniques are utilized to obtained the flow field along the inlet passage, chamber, …

Pinch Valves | Australian Supplier

Get the right pinch valves for the job. With the right actuators and controls, all assembled and tested in our workshop. ... Tropicana Gold Mine – 2688 Valve Package Assembled and Delivered. Learn more: Work. …

Fatigue life of finite element analysis metal bellows for valves

This paper applying MSC.Fatigue software,with the strain life method as primary analysis method,analyze the fatigue life of the metal bellows for valves,getting the fatigue life of bellows under the condition of pressure and movement.This paper analyze the effect of analysis for bellows fatigue life by the material cycle capability,and validate the analysis …

Finite Element Analysis of a Novel Aortic Valve Stent

the stent is an equine or bovine pericardial trileaflet valve (Figure 1b) Finite Element Model The assembly of the aorta, aortic valve and stent is modeled with solid finite elements using the software package Abaqus (Dassault Systemes, Paris, France). The aorta and stent are modeled with 1 order C3D8I hexahedral elements. The C3D8I

Flow control for gold production

 — Whether it is concentration sand or concentrate transportation, Valmet's Flowrox™ pinch valves and slurry knife valves offer the longest service intervals and …

Finite element analysis of seal performance for new type …

In order to enhance the sealing performance of new type rotating ball valve with double direction metal sealing,the finite element analysis(FEA) was processed by using the numerical method of symmetrical penalty function and its corresponding evaluation model.Based on ANSYS,the sealing performance of new type rotating ball valve with …

sbm/sbm design and pinch valve of a gold ore.md at master

sbm design and pinch valve of a gold oreOre processing at Sunrise Dam gold mine operations. AngloGold Ashanti''

Control Pinch Valves

Control Pinch Valves Maintenance Free With Precise Control. Red Valve's Control Pinch Valves offer maximum durability with precise control and virtually no maintenance. A heavy-duty, rugged pinch mechanism positions the sleeve, resulting in accurate flow control. Our Control Pinch Valves features include: No packing to maintain or seats to wear

Severe service valves for the mineral processing industry

8 Types of Gold Ore

Using a finite element model of the thumb to study

Background: Finite element (FE) analysis is widely used in different fields of orthopaedic surgery, however, its application to the trapeziometacarpal joint has been limited due to the small size, complex biconcave-convex joint geometry, and complex musculature. The goal of this study was to improve upon existing models by creating a muscle-driven FE thumb …

Finite element modeling of pore-fluid flow in the Dachang ore …

DOI: 10.1016/J.GSF.2011.05.008 Corpus ID: 129209436; Finite element modeling of pore-fluid flow in the Dachang ore district, Guangxi, China: Implications for hydrothermal mineralization

Nonlinear solid finite element analysis of mitral valves with

 — From 3D echocardiographic data, the mitral apparatus was segmented, enabling the modeling of the mitral valve apparatus in a finite element framework. [19] [20] [21][22] ...

Pinch Valve

 — Another mechanical pinch valve design has a lowering pinch bar and a rising pinch bar from the bottom (Figure 2 labeled F). Automatic pinch valves operate using compressed air, hydraulic fluid, or a solenoid. While the medium operating the pinch valve differs slightly between the three automatic pinch valve types, the result is the same.

Study on Harmonics Characteristics of Magnetic-Valve …

Magnetic-valve controllable reactor (MCR) has been widely applied in many kinds of industries, such as power systems and ferrous metallurgy. As electrical equipment, MCR can adjust its reactance smoothly and continuously, which has advantages like low dissipation and maintenance costs, high reliability. In this paper, a precise 2-D field …

Design of an aortic polymeric valve with asymmetric leaflets …

The radial curve of leaflets affects the valve's performance more than other geometric parameters. The combination of straight lines and arcs for radial curves was selected as the reference model for asymmetric valves with one large and two small leaflets. ... The Finite Element Method (FEM) was used to evaluate performance parameters ...