Comparative study of the reluctance machines with and without field winding for generator and starter applications

2020 ◽  
Vol 64 (1-4) ◽  
pp. 147-155
Author(s):  
Junhao An ◽  
Liwei Shi ◽  
Zhen Han ◽  
Di Tan
Keyword(s):  
Power Generation ◽  
Finite Element ◽  
Finite Element Simulation ◽  
Simulation Software ◽  
Switched Reluctance ◽  
Element Simulation ◽  
Doubly Salient ◽  
Generation Mode ◽  
Electromagnetic Characteristics ◽  
Starter Generator

The switched reluctance starter generator (SRSG) without field winding and the doubly salient electromagnetic starter generator (DSESG) with field winding are compared in this paper. The influences of two arrangements of each variable winding and spacing variable winding for the performance of the starter generator were studied. Mathematical models of start mode and power generation mode were established respectively, and the influencing factors of starting torque and power generation phase voltage were derived. Next, the finite element simulation software was used to simulate the electromagnetic characteristics of machine. Finally, prototype experiment was made. The finite element simulation and prototype experiment results proved that spacing excitation DSESG has a better prospect as automotive starter generator.

Research on Surface Roughness of Supersonic Vibration Auxiliary Side Milling for Titanium Alloy

2021 ◽  
Author(s):  
XueTao Wei ◽  
caixue yue ◽  
DeSheng Hu ◽  
XianLi Liu ◽  
YunPeng Ding ◽  
...  
Keyword(s):  
Surface Roughness ◽  
Finite Element ◽  
Prediction Model ◽  
Simulation Model ◽  
Finite Element Simulation ◽  
Simulation Software ◽  
Surface Roughness Prediction ◽  
Contour Shape ◽  
Element Simulation ◽  
Roughness Prediction

Abstract The processed surface contour shape is extracted with the finite element simulation software, and the difference value of contour shape change is used as the parameters of balancing surface roughness to construct the infinitesimal element cutting finite element model of supersonic vibration milling in cutting stability domain. The surface roughness trial scheme is designed in the central composite test design method to analyze the surface roughness test result in the response surface methodology. The surface roughness prediction model is established and optimized. Finally, the finite element simulation model and surface roughness prediction model are verified and analyzed through experiment. The research results show that, compared with the experiment results, the maximum error of finite element simulation model and surface roughness prediction model is 30.9% and12.3%, respectively. So, the model in this paper is accurate and will provide the theoretical basis for optimization study of auxiliary milling process of supersonic vibration.

Rules of CST Blunt Edge Roundness and the Influence on Collision Characteristics

2012 ◽  
Vol 204-208 ◽  
pp. 4831-4834
Author(s):  
Zheng Bao Lei ◽  
Lan Yang ◽  
Mu Xi Lei
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Simulation Software ◽  
Cutting Edge ◽  
Strong Basis ◽  
Impact Speed ◽  
Element Simulation ◽  
Car Safety ◽  
Blunt Edge

This study is based on UG and finite element simulation software VPG and LS-DYNA to simulate,finally get how the automotive quality,impact speed and angle influence on rounded cutting edge rules of CST and collision characteristics .So provide a strong basis to the application of CST and car safety.

Study and Simulation of Electro-Mechanical Sensor

2011 ◽  
Vol 282-283 ◽  
pp. 440-443
Author(s):  
Ping Zhang ◽  
Chun Lei Sun ◽  
Qing’en Li
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Pressure Sensor ◽  
Material Selection ◽  
Simulation Software ◽  
Performance Parameters ◽  
Electromechanical Systems ◽  
Performance Indexes ◽  
Element Simulation ◽  
Mechanical Sensor

The relevant introduction development of the micro electromechanical systems (MEMS) is carried out in this paper. The pressure sensor is an important component of micro electromechanical systems (MEMS). Many aspects of the pressure sensor are studied，simulated and analyzed by us. The principle of work of the pressure sensor is elaborated in details and the material selection is studied also. The correlative performance indexes, such as precision and the repeatability of pressure sensor, are explored. In the following part of this paper, through the finite element simulation software, the analytic study of some performance parameters of the sensor chip is carried out in detail. Through the analysis, we find that the sensor designed here has many advantages.

The Finite Element Simulation of Thermal Deformation and Microstructure Evolution Forecast of AZ61 Alloy

2014 ◽  
Vol 989-994 ◽  
pp. 548-551
Author(s):  
Quan Li ◽  
Wen Jun Liu ◽  
Ren Ju Cheng ◽  
Cheng Li ◽  
Shan Jiang ◽  
...  
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Simulation Software ◽  
The Finite Element Method ◽  
Rigid Plastic ◽  
Production Forecast ◽  
Optimization Of Process Parameters ◽  
Element Simulation ◽  
Calculation Results

In this paper, rigid-plastic finite element simulation software Marc / Auto-forge reflect compression AZ61B magnesium alloy case. Simulation results show that the stress, strain and temperature distribution within the sample is uneven, uneven distribution affect the organization, and with the changes in the deformation process and calculation results with the experimental data exactly. The finite element method can be used in the actual production forecast after tissue deformation components, optimization of process parameters to control the quality of the finished piece.

The Effect and Experiment Research of Forming Angle on Internal Defect of Valve Roughcast Formed by Single Cross Wedge Rolling

2011 ◽  
Vol 230-232 ◽  
pp. 389-394
Author(s):  
Xiao Fei Wang ◽  
Kang Sheng Zhang ◽  
Jin Ping Liu ◽  
Zheng Huan Hu
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Simulation Software ◽  
Machining Process ◽  
Cross Wedge Rolling ◽  
Internal Defect ◽  
Forming Process ◽  
Element Simulation ◽  
Single Cross ◽  
Forming Angle

Cross wedge rolling valve roughcast is charactered by minor diameter, long stretching and heavy section shrinkage; however, it is hard to select a set of suitable machining process parameter and prone to rolling internal defect. In order to research this problem, a whole forming process of valve roughcast by single cross wedge rolling is simulated with finite element simulation software DEFORM-3D 6.0, which focuses on the stress and strain of the center point of rolled piece under different forming angles. The rolling experiment under different forming angles was done on H500 rolling mill to calculate and analysis of the areas of the centre holes for each rolled piece. The influence of forming angle on internal defect is discovered by a method combining finite element simulation and experiments. At last, it is concluded that forming angle of 28°can improve the internal defect of valve roughcast formed by single cross wedge rolling.

scholarly journals Research on Milling Tool Wears Prediction based on 3-D Finite Element Process Simulation

2020 ◽  
Author(s):  
Zhibo LIU ◽  
Caixu YUE ◽  
Xiaochen LI ◽  
Xianli LIU ◽  
Steven Y. Liang ◽  
...  
Keyword(s):  
Finite Element ◽  
Tool Wear ◽  
Finite Element Simulation ◽  
Tool Life ◽  
Metal Cutting ◽  
End Milling ◽  
Simulation Software ◽  
Wear Model ◽  
Empirical Prediction ◽  
Element Simulation

In the process of metal cutting, the anti-wear performance of the tool determines the life of the tool and affects the surface quality of the workpiece. The finite element simulation method can directly show the tool wear state and morphology, but due to the limitations of the simulation time and complex boundary conditions, it has not been commonly used in tool life prediction. Based on this, a tool wear model was established on the platform of a finite element simulation software for the cutting process of titanium alloy TC4 by end milling. The key technique is to embed different types of tool wear models into the finite element model in combination with the consequent development technology. The effectiveness of the tool wear model is validated by comparing the experimental results with the simulation results. At the same time, in order to quickly predict the tool life, an empirical prediction formula of tool wear was established, and the change course of tool wear under time change was obtained.

Study of 1Cr18Ni9Ti Material Properties in Cutting Process

2012 ◽  
Vol 500 ◽  
pp. 218-222
Author(s):  
Zhe Li ◽  
Bin Jiang ◽  
Hong Xu Xu ◽  
Ming Jia Zhou
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Linear Expansion ◽  
Cutting Speed ◽  
Simulation Software ◽  
Temperature Changes ◽  
Element Simulation ◽  
Static Tensile ◽  
Coefficient Of Linear Expansion ◽  
Breakage Mechanism

This paper obtained the mechanical properties of 1Cr18Ni9Ti by the static tensile test, got the corresponding relationship between the 1Cr18Ni9Ti coefficient of linear expansion, thermal conductivity and temperature changes, and simulated the process of 1Cr18Ni9Ti cutting with the finite element simulation software, then analysised the reason why the deviation of the finite element simulation results and measured data increased with the cutting speed improved. These studies provide some important references for the finite element simulation and revealing the tool wear and breakage mechanism.

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