Solving Weight Function for the Partially Filled Pipe Electromagnetic Flowmeter by Means of Finite Element Numerical Analysis

2012 ◽  
Vol 550-553 ◽  
pp. 3395-3399 ◽  
Author(s):  
Kai Xia Wei ◽  
Shu Long Gu ◽  
Long Qing He
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Weight Function ◽  
Signal Analysis ◽  
Function Method ◽  
Nonlinear Function ◽  
Electromagnetic Flowmeter ◽  
Analysis Method ◽  
Function Relationship ◽  
General Tool

The weight function method that uses a known weight function has been a general tool for the signal analysis of the electromagnetic flowmeter(EMF). However, it is difficult to solve the voltage equation directly by analytical method in order to get weight function for the partially filled pipe electromagnetic flowmeter(EMF-PF). The finite element numerical analysis method is tried to solve the weight function for the EMF-PF in this paper. The results show that weight function for EMF-PF relates to fill height of liquid in partially filled pipes, and there is a nonlinear function relationship between weight function for EMF-PF and fullness degree of liquid in the pipe.

Numerical Solution for Weight Function of Electromagnetic Flowmeter Using Finite Element Method

2013 ◽  
Vol 444-445 ◽  
pp. 1360-1363
Author(s):  
Kai Xia Wei
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Numerical Analysis ◽  
Boundary Conditions ◽  
Weight Function ◽  
Numerical Solution ◽  
Electromagnetic Flowmeter ◽  
Analysis Method ◽  
Sensor Structure ◽  
Complex Boundary

Weight function is related with the sensor structure of electromagnetic flowmeter (EMF). Because of complex boundary conditions, it is difficult to solve the voltage differentiation equation of EMF directly to get weight function. The finite element numerical analysis method is tried to solve the weight function for the point and large-electrode EMF in this paper. The results prove it is feasible and efficient to obtain weight function of EMA by means of finite element numerical analysis.

The Discussion of Numerical Analysis Method about Underwater Bridge Pier Structure

2011 ◽  
Vol 243-249 ◽  
pp. 672-676
Author(s):  
Jun Min Shen ◽  
Hui Liu ◽  
Fu Guo Guo
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Dynamic Characteristics ◽  
Deep Water ◽  
Analytical Method ◽  
Complex Structure ◽  
Bridge Piers ◽  
Analysis Method ◽  
Numerical Analysis Method ◽  
Finite Element Software

In deep water, the dynamic characteristics of bridge piers will be changed. Using the numerical analysis method and the finite element software ANSYS, this paper analyzed the influence of the dynamic characteristics of the pier under different depth of water. At the same time, compared with the analytical method, we found that the results between two methods are consistent. But to the complex structure, the numerical analysis method would be superior.

Numerical Analysis of Coupled Finite Element with Meshfree in Bulging Process of Sheet Elastic Flexible-Die Forming

2011 ◽  
Vol 189-193 ◽  
pp. 2054-2057
Author(s):  
Zhong Jin Wang ◽  
Bin Xian Yuan ◽  
Jian Guang Liu
Keyword(s):  
Finite Element ◽  
Numerical Analysis ◽  
Sheet Metal ◽  
Analysis Method ◽  
Element Free Galerkin Method ◽  
Element Free Galerkin ◽  
Flexible Die Forming ◽  
Element Free ◽  
Flexible Die ◽  
Die Forming

Sheet flexible-die forming processes have been playing a good application on sheet metal forming in the industry field. Because of the coupled deformation between sheet metal and flexible-die, it is necessary to utilize numerical simulation technology to analyze it. In this paper, a numerical analysis method for coupling the deformation of sheet metal and flexible-die is developed. The deformation of sheet metal is analyzed with finite element method (FEM) and the bulk deformation of flexible-die is analyzed with the Element free Galerkin method (EFGM). The sheet flexible-die bulging process is analyzed with the developed FEM-EFGM method. This paper proposes a suitable numerical method to analyze sheet flexible-die forming.

Comparison of Different Methods for the Determination of Stress Intensity Factors of Cracks in Pipes With Stress Gradients

1984 ◽  
Vol 106 (2) ◽  
pp. 209-213 ◽  
Author(s):  
C. Mattheck ◽  
P. Morawietz ◽  
D. Munz ◽  
H. Stamm
Keyword(s):  
Finite Element ◽  
Stress Intensity ◽  
Weight Function ◽  
Excellent Agreement ◽  
Stress Intensity Factors ◽  
Function Method ◽  
Weight Functions ◽  
Intensity Factors ◽  
Stress Gradients

Stress intensity factors for long longitudinal and complete circumferential cracks under stress gradients were calculated using a weight function method. The weight functions were obtained by a method proposed by Petroski and Achenbach [3] and by a finite element fit procedure. Excellent agreement was obtained with finite element results of Labbens, et al. [7].

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