Estimation of magnetic loss of a sinus fed induction motor using a finite element software and a new approach to dynamic hysteresis

1999 ◽  
Author(s):  
T. Chevalier ◽  
A. Kedous-Lebouc ◽  
B. Cornut ◽  
C. Cester
Keyword(s):  
Finite Element ◽  
Induction Motor ◽  
Magnetic Loss ◽  
New Approach ◽  
Finite Element Software ◽  
Dynamic Hysteresis

New Approach to Treat Broken Pile in Cast-In Site Bored Pile

2013 ◽  
Vol 639-640 ◽  
pp. 615-618
Author(s):  
Guang Hui Wang ◽  
Cheng Long Wei
Keyword(s):  
Finite Element ◽  
Cement Paste ◽  
New Combination ◽  
Analysis Model ◽  
New Approach ◽  
Finite Element Software ◽  
Bored Pile ◽  
Bore Pile ◽  
Combination Approach ◽  
Set Up

Many cast-in-site bore pile have broken pile because of collapsing in wall of holl. Based on the principle of mechanics, a new combination approach was proposed for dealing with the broken pile. The approach is displacing the soil in the pile by cement paste and increasing the height and the steal ratio of the top beam which is on the defect pile. Using the finite element software, we have set up the analysis model of the approach, which helps to demonstrate the rationality of this method. This method can be referenced by the reinforcement and maintenance of the bridges.

scholarly journals Magneto-structural simulation of an induction motor start-up using nodal magnetic forces in Elmer

2017 ◽  
Vol 50 (3) ◽  
pp. 296-299
Author(s):  
Janne Keränen ◽  
Pavel Ponomarev ◽  
Sabin Sathyan ◽  
Juhani Kataja ◽  
Anouar Belahcen
Keyword(s):  
Finite Element ◽  
Open Source ◽  
Induction Motor ◽  
Magnetic Force ◽  
Electrical Machines ◽  
Finite Element Software ◽  
Magnetic Forces ◽  
Structural Simulation ◽  
Start Up

For reduction of vibrations and noise of electrical machines, the computation of the magnetic force distributions and the ensuing deformations are needed. Here we utilize nodalforce method in open-source Finite Element software Elmer to compute the force distributions and the vibrations of an induction motor during start-up.

scholarly journals Straight and Bent Bars Buckling Considered as the Axial Displacement of One Bar End

2020 ◽  
Vol 3 (1) ◽  
pp. 57-70
Author(s):  
Stefan Berczyński ◽  
Paweł Dunaj ◽  
Zenon Grządziel
Keyword(s):  
Finite Element ◽  
Compressive Force ◽  
Experimental Tests ◽  
Axial Displacement ◽  
New Approach ◽  
Finite Element Software ◽  
Bar Buckling ◽  
Energy Equations

AbstractA new approach has been taken to the problem of straight and bent bar buckling, where bar buckling is considered as a function of axial displacement of one end. It was assumed that the length of a bar being buckled at any instant of buckling is the same as that of a straight bar, regardless of the size of axial displacement of one end of the bar. Based on energy equations, a formula was derived for the value of axial displacement of one bar end or buckling amplitude in the middle of bar length as a function of compressive force. The established relationships were confirmed by simulation tests using the finite element software Midas NFX and by experimental tests.

Research on Temperature Field of Variable Frequency Motor

2013 ◽  
Vol 273 ◽  
pp. 355-359
Author(s):  
Yao Hui Wu ◽  
Xiao Mei Liu ◽  
Xiu Feng Meng ◽  
Hong Tu Zhao
Keyword(s):  
Finite Element ◽  
Temperature Field ◽  
Induction Motor ◽  
Temperature Rise ◽  
Experimental Tests ◽  
Transient Temperature ◽  
Variable Frequency ◽  
Element Analysis ◽  
Finite Element Software ◽  
Frequency Power

To the problem of small induction motor that supplied by Variable frequency power temperature rise, according to the basic theory of heat transfer and using finite element analysis software, in the paper, it established a motor of two-dimensional transient temperature field model ,though the equivalent simplify of the structure and thermal conductivity, and the compare between the simulation of finite element software studies and the temperature experimental tests , It confirms the affect that variable frequency power on the motor temperature rise, and finds a simplified simulation of motor temperature field and parameters equivalent approach which do provide effective help to the design and use of the induction motor.

A New Approach for Predicting Residence Time Distribution of Subsurface Wastewater Infiltration System

2012 ◽  
Vol 518-523 ◽  
pp. 1720-1723
Author(s):  
Jin Feng Dong ◽  
Yue Zhang ◽  
Wei Yu Zhang
Keyword(s):  
Finite Element ◽  
Residence Time ◽  
Time Distribution ◽  
Residence Time Distribution ◽  
Design Stage ◽  
Design Parameters ◽  
Two Dimensional ◽  
Hydraulic Residence Time ◽  
New Approach ◽  
Finite Element Software

Hydraulic residence time (HRT) is one of the key design parameters controlling the removal efficiency of contaminants and nutrients in subsurface wastewater infiltration system (SWIS). A two-dimensional axisymetric finite element software called SEEP/W was used to simulate unsaturated and saturated flow within SWIS. The paper presents a methodology by example for estimating residence time distribution (RTD) at the design stage of SWIS.

The Intersection Method: A New Approach on the Concrete Aggregate Model

2010 ◽  
Vol 163-167 ◽  
pp. 1053-1057
Author(s):  
Jian Liang ◽  
Zong Ke Lou
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Numerical Study ◽  
Concrete Aggregate ◽  
Aggregate Model ◽  
New Approach ◽  
Finite Element Software ◽  
User Friendly ◽  
Intersection Method

In order to study the meso-structure of concrete deeply, this paper proposes a new approach—intersection method, which is much simpler and more applicable to check the interference for wide varieties of shape aggregate by using the VBA language built-in AUTOCAD. Results show that the procedure to establish the model of concrete aggregate is user-friendly, simple, intuitive and precise. It can be analyzed through introducing into finite element software for the further numerical study of macro and micro mechanical properties of concrete by using the mutual files SAT which is used to exchange the CAD data between AUTOCAD and other software.

scholarly journals Low-Cycle Fatigue Crack Initiation Simulation and Life Prediction of Powder Superalloy Considering Inclusion-Matrix Interface Debonding

Materials ◽  
2021 ◽  
Vol 14 (14) ◽  
pp. 4018
Author(s):  
Shuming Zhang ◽  
Yuanming Xu ◽  
Hao Fu ◽  
Yaowei Wen ◽  
Yibing Wang ◽  
...  
Keyword(s):  
Finite Element ◽  
Crack Initiation ◽  
Life Prediction ◽  
Damage Mechanics ◽  
Low Cycle Fatigue ◽  
Fatigue Crack Initiation ◽  
Fatigue Loading ◽  
Interface Debonding ◽  
Damage Evolution Equation ◽  
Finite Element Software

From the perspective of damage mechanics, the damage parameters were introduced as the characterizing quantity of the decrease in the mechanical properties of powder superalloy material FGH96 under fatigue loading. By deriving a damage evolution equation, a fatigue life prediction model of powder superalloy containing inclusions was constructed based on damage mechanics. The specimens containing elliptical subsurface inclusions and semielliptical surface inclusions were considered. The CONTA172 and TARGE169 elements of finite element software (ANSYS) were used to simulate the interfacial debonding between the inclusions and matrix, and the interface crack initiation life was calculated. Through finite element modeling, the stress field evolution during the interface debonding was traced by simulation. Finally, the effect of the position and shape size of inclusions on interface debonding was explored.

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