Study on Object Function of Milling Insert Adhering Disrepair for Machining the Refractory Steel

2013 ◽  
Vol 670 ◽  
pp. 147-152
Author(s):  
Ming Yang Wu ◽  
X.L. Liu ◽  
Y.N. Cheng
Keyword(s):  
Density Function ◽  
Cutting Parameters ◽  
Temperature Fields ◽  
Rake Face ◽  
Object Function ◽  
Machine Material ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Technical Basis ◽  
Fuzzy Mathematic

Based on the milling experiments for the difficult-to-machine material 3Cr-1Mo-1/4V steel, as the goal of minimal adhering disrepair, taking the waved-edge milling insert (the rake face is curve plane) developed by Harbin University of Science and Technology as an example, we have study on the optimization object function of the milling insert grooves. Based on the heat density function of the 3D complex groove milling insert, setting the heat density function as boundary conditions, we have the finite element analysis (FEA) on the temperature fields of different cutting parameters, and have fuzzy synthetical judgement on the temperature fields with fuzzy mathematic theory. We build the object function relation between the fuzzy synthetical judgement results and cutting parameters of the adhering disrepair, so to have groove design optimization. So provide the theoretic and technical basis for solving the adhering disrepair problem and groove optimization.

Study on Object Function of Milling Insert Impact Disrepair Based on Stress Field Analysis

2010 ◽  
Vol 33 ◽  
pp. 423-427
Author(s):  
Yaon An Cheng ◽  
Li Quan Wang ◽  
Ming Yang Wu ◽  
Zhen Jia Li
Keyword(s):  
Cutting Parameters ◽  
Field Analysis ◽  
Stress Fields ◽  
Force Density ◽  
Object Function ◽  
Element Analysis ◽  
Minimal Impact ◽  
Stress Field Analysis ◽  
Fuzzy Mathematic ◽  
The Impact

This article takes the waved-edge milling insert (the rake face is curve plane) developed by Harbin University of Science and Technology as an example, as the goal of minimal impact disrepair, the optimization object function of the milling insert grooves is studied. Based on the force density function of the 3D complex groove milling insert, we have the finite element analysis on the stress fields of different cutting parameters, and have fuzzy synthetical judgement on the stress fields with fuzzy mathematic theory. We build the object function relation between the fuzzy synthetical judgement results and cutting parameters of the impact disrepair, so to have groove design optimization. All these studies provide the theoretic basis for the groove exploitation and the cutter disrepair which is the key problem in the automatization production and groove optimization.

Based on the ANSYS of Small and Deep Hole a Bit Cutting Transient Dynamic Study

2012 ◽  
Vol 503-504 ◽  
pp. 802-804 ◽  
Author(s):  
Ping Wei ◽  
Jiang Han ◽  
Hui Lian Geng
Keyword(s):  
Cutting Tool ◽  
Cutting Parameters ◽  
Empirical Method ◽  
Deep Hole ◽  
Processing Efficiency ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Scene Processing ◽  
Optimization Of Cutting Parameters ◽  
Selection Of

Introduces the general twist drill analysis, Through the continuous experiment and practice, obtained some processing key question method. As a result of small and deep hole parts of the scene processing efficiency is low, the improper selection of cutting quantity will cause premature wear of cutting tool. The traditional method is the empirical method and experimental method to solve the waste of material and time comparison. This article mainly is the finite element analysis software, the analysis of the ordinary drill thermal stress, transient dynamics, to solve the optimization of cutting parameters before processing, improve processing efficiency, save cost.

3-D Finite Element Analysis on a Fillet Weld Sealing Joint in the High-Pressure Hydrogenation Heat Exchanger

2011 ◽  
Vol 189-193 ◽  
pp. 3446-3451
Author(s):  
Xiao Feng Lu ◽  
Cui Zhao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Heat Exchanger ◽  
Welding Residual Stress ◽  
Temperature Fields ◽  
Element Analysis ◽  
Fillet Weld ◽  
Welding Temperature ◽  
Joint Zone ◽  
The Finite Element Analysis

Based on the finite element analysis software ABAQUS, a sequentially coupled fillet welding thermal-stress calculation program was developed to simulate the plate close welding structure. The welding temperature fields and the stress/strain distributions of plate sealing joint of the hydrogenation heat exchanger were obtained. The simulation results showed that there existed higher stress near the fillet weld sealing joint zone and the maximum stress at the start welding point, the plastic strain of the weld joint was lager and a strain mutation occurred on the weld overlay .The analysis of the calculation result provides theory references for controlling the welding residual stress and it’s of great significance to improve the reliability and safety of hydrogenation heat exchanger.

Analysis on the Melt Welding Process of the Finite Element for 7022 Aluminum Alloy

2016 ◽  
Vol 693 ◽  
pp. 726-733
Author(s):  
W.W. Song ◽  
J.L. Wang
Keyword(s):  
Finite Element ◽  
Aluminum Alloy ◽  
Welding Process ◽  
Temperature Fields ◽  
Actual Cost ◽  
Ansys Software ◽  
Element Analysis ◽  
Stress Variation ◽  
The Finite Element Analysis ◽  
Practical Engineering

In this paper, the TIG welding process of 7022 aluminum alloy was analyzed by the ANSYS software. The temperature field and stress field contours were obtained. The temperature and stress variation in the welding process were analyzed by the obtained stress and temperature fields. In this paper, the actual welding process of 7022 aluminum alloy can be predicted by the finite element analysis. It can be avoided unnecessary occurred during the pre-research experiments, and reducing testing costs, further reducing the actual cost of the project. Therefore, the research has practical engineering value.

The Simulation and Experimental Study of Residual Stress Based on Thermo-Mechanical Model of GCr15

2013 ◽  
Vol 589-590 ◽  
pp. 152-156
Author(s):  
Xiao Ting Wang ◽  
Tao Chen ◽  
Su Yan Li ◽  
Kai Li
Keyword(s):  
Residual Stress ◽  
Finite Element ◽  
Cutting Parameters ◽  
Element Model ◽  
Surface Residual Stress ◽  
Machined Surface ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Metal Machining ◽  
Stress Simulation

The metal machining 3D finite element model was established on the basis of the thermal-elastic-plastic finite element theory. And the machined surface residual stress simulation in different cutting parameters was obtained through the finite element analysis. It is concluded that the residual stress distribution variation is spoon-shaped curve. When the feed increased, the slope of the curves is smaller, however the speed increased, the slope of the curves is higher and the stress tends to negative values quicker. Finally, the experiments are carried out. The result was basically consistent with the simulation.

A two degrees of freedom comb capacitive-type accelerometer with low cross-axis sensitivity

2019 ◽  
Vol 13 (3) ◽  
pp. 5334-5346
Author(s):  
M. N. Nguyen ◽  
L. Q. Nguyen ◽  
H. M. Chu ◽  
H. N. Vu
Keyword(s):  
Degrees Of Freedom ◽  
Proof Mass ◽  
Vibration Modes ◽  
Electrode Structure ◽  
Element Analysis ◽  
Mechanical Coupling ◽  
Fully Differential ◽  
Mode Effects ◽  
The Finite Element Analysis ◽  
Cross Axis

In this paper, we report on a SOI-based comb capacitive-type accelerometer that senses acceleration in two lateral directions. The structure of the accelerometer was designed using a proof mass connected by four folded-beam springs, which are compliant to inertial displacement causing by attached acceleration in the two lateral directions. At the same time, the folded-beam springs enabled to suppress cross-talk causing by mechanical coupling from parasitic vibration modes. The differential capacitor sense structure was employed to eliminate common mode effects. The design of gap between comb fingers was also analyzed to find an optimally sensing comb electrode structure. The design of the accelerometer was carried out using the finite element analysis. The fabrication of the device was based on SOI-micromachining. The characteristics of the accelerometer have been investigated by a fully differential capacitive bridge interface using a sub-fF switched-capacitor integrator circuit. The sensitivities of the accelerometer in the two lateral directions were determined to be 6 and 5.5 fF/g, respectively. The cross-axis sensitivities of the accelerometer were less than 5%, which shows that the accelerometer can be used for measuring precisely acceleration in the two lateral directions. The accelerometer operates linearly in the range of investigated acceleration from 0 to 4g. The proposed accelerometer is expected for low-g applications.

Tread Depth Effects on Tire Rolling Resistance

2001 ◽  
Vol 29 (3) ◽  
pp. 134-154 ◽  
Author(s):  
J. R. Luchini ◽  
M. M. Motil ◽  
W. V. Mars
Keyword(s):  
Finite Element Analysis ◽  
Common Knowledge ◽  
Rolling Resistance ◽  
Test Method ◽  
Tire Model ◽  
Element Analysis ◽  
Truck Tires ◽  
The Finite Element Analysis ◽  
Equilibrium Test ◽  
Depth Effects

Abstract This paper discusses the measurement and modeling of tire rolling resistance for a group of radial medium truck tires. The tires were subjected to tread depth modifications by “buffing” the tread surface. The experimental work used the equilibrium test method of SAE J-1269. The finite element analysis (FEA) tire model for tire rolling resistance has been previously presented. The results of the testing showed changes in rolling resistance as a function of tread depth that were inconsistent between tires. Several observations were also inconsistent with published information and common knowledge. Several mechanisms were proposed to explain the results. Additional experiments and models were used to evaluate the mechanisms. Mechanisms that were examined included tire age, surface texture, and tire shape. An explanation based on buffed tread radius, and the resulting changes in footprint stresses, is proposed that explains the observed experimental changes in rolling resistance with tread depth.

Interactive Graphics for the Analysis of Tires

1985 ◽  
Vol 13 (3) ◽  
pp. 127-146 ◽  
Author(s):  
R. Prabhakaran
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Approximate Solutions ◽  
Interactive Graphics ◽  
Element Analysis ◽  
Analysis Process ◽  
Physical Problems ◽  
The Finite Element Analysis ◽  
Analysis Computer ◽  
Discretization Technique

Abstract The finite element method, which is a numerical discretization technique for obtaining approximate solutions to complex physical problems, is accepted in many industries as the primary tool for structural analysis. Computer graphics is an essential ingredient of the finite element analysis process. The use of interactive graphics techniques for analysis of tires is discussed in this presentation. The features and capabilities of the program used for pre- and post-processing for finite element analysis at GenCorp are included.

Finite Element Analysis of Nonuniformity of Tires with Imperfections5

2007 ◽  
Vol 35 (3) ◽  
pp. 226-238 ◽  
Author(s):  
K. M. Jeong ◽  
K. W. Kim ◽  
H. G. Beom ◽  
J. U. Park
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Three Dimensional ◽  
Element Model ◽  
Radial Force ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Dimensional Finite Element ◽  
Force Variation ◽  
Three Dimensional Finite Element

Abstract The effects of variations in stiffness and geometry on the nonuniformity of tires are investigated by using the finite element analysis. In order to evaluate tire uniformity, a three-dimensional finite element model of the tire with imperfections is developed. This paper considers how imperfections, such as variations in stiffness or geometry and run-out, contribute to detrimental effects on tire nonuniformity. It is found that the radial force variation of a tire with imperfections depends strongly on the geometrical variations of the tire.

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