Construction and finite element simulation of the saw type gin stand using fractal theory

2020 ◽  
Vol 90 (23-24) ◽  
pp. 2755-2768
Author(s):  
Wen Hu ◽  
Xiaochuan Chen ◽  
Jun Wang ◽  
Yong Li
Keyword(s):  
Finite Element ◽  
Moisture Content ◽  
Finite Element Simulation ◽  
Fractal Theory ◽  
Morphological Structure ◽  
The Finite Element Method ◽  
Cotton Lint ◽  
Element Simulation ◽  
Ansys Workbench

The process of cotton ginning was simulated by the finite element method in order to improve and optimize the efficiency of the process. Based on the fractal theory, a new cotton model was established by observing the morphological structure of cotton: the fractal cotton model with cotton seed. Considering the existence of seeds in actual cotton, the model assumes that the cotton fiber bundles are distributed in a fractal structure and the section is simplified as a circle. The finite element simulation of the model was carried out using ANSYS Workbench software, and the viscoelastic material parameters of cotton fibers were determined under different moisture content, the effects of different moisture contents and rotation speeds on the saw type gin stand were analyzed, and the stress and strain nephograms of cotton at different times were checked. The simulation results showed that when moisture content was between 6.1% and 7.8%, the ginning efficiency is the highest. The higher the speed of the saw tooth, the more severe the effect of ginning, but too high a speed will also affect the quality of the cotton lint. The results showed that the simulation conclusions were in line with the actual situation, and the model had certain application value.

Research on the Connection Performance of Variable Pitch of Screw Threaded Casing Based on 3D Finite Element Simulation Model

2012 ◽  
Vol 215-216 ◽  
pp. 1105-1110 ◽  
Author(s):  
Xiong Guo ◽  
Lv Long Zou ◽  
Bing Lu ◽  
Shi Liang Zhang ◽  
Xing Ren Su ◽  
...  
Keyword(s):  
Finite Element ◽  
Stress Distribution ◽  
Finite Element Simulation ◽  
Element Model ◽  
Static Structure ◽  
3D Finite Element ◽  
Variable Pitch ◽  
Element Simulation ◽  
Ansys Workbench

The connection performance of the large taper, multi-thread, variable pitch of screw threaded casing is researched by 3D finite element simulation on ANSYS Workbench. The 3D finite element model is created precisely. The stress distribution on the teeth of three kind variable pitch of screw threaded structure is studied by using the static structure of the contact analysis module. Contrasting stress distribution of the variable pitch of screw with of the equal pitch of screw under the same working condition, it is validated that design principle for the variable pitch of screw connection is correct. The influence of changes in the amount of variable pitch of screw to the whole stress distribution on teeth is discussed. The results show that the force distribution on the teeth of the variable pitch of screw connection is more uniform than equal pitch of screw, and will improve the overall carrying capacity. This study has its practical value to improve the connective performance of the threaded casing and enhance the product quality of threaded casing.

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.

On Eccentric Tube Nosing

2008 ◽  
Vol 130 (1) ◽  
Author(s):  
Mahmoud Nemat-Alla
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Design Modification ◽  
Modes Of Failure ◽  
Element Simulation ◽  
Conical Die ◽  
Eccentric Tube ◽  
Different Diameters ◽  
Tube Nosing

Joining two tubes of different diameters has important concerns in many industries and engineering applications. An eccentric reducer is often used in such applications. Therefore, a simple and easy technique for manufacturing an eccentric reducer is of much importance. The simplest technique for producing the eccentric reducers is the tube nosing through eccentric conical dies. In this paper the finite element simulation is used to investigate the eccentric nosing of circular tubes through an eccentric conical die. Simulation is performed to investigate the plastic deformations of the deformed tube and all the possible modes of failure during the eccentric nosing process. Identification of unfavorable modes of failure in the tube nosing process lead to design modification guidelines, design of preform, and the die shape, for the eccentric nosing process. The results obtained confirmed that the modified design of the tube blank not only improves the quality of the nosed-tube product but also reduces nosing load and improves the limiting nosing ratio. Comparison with the experimental results shows that the nosing load and the modes of failure are successfully predicted by the finite element simulation. Also, a preform design for the tube blank that can produce an eccentric reducer with collar end that did not need a trimming process is introduced.

Finite Element Simulation of RC Beam Strengthened with FRP

2012 ◽  
Vol 446-449 ◽  
pp. 3229-3232
Author(s):  
Chao Jiang Fu
Keyword(s):  
Experimental Data ◽  
Finite Element Method ◽  
Finite Element ◽  
Numerical Analysis ◽  
Finite Element Simulation ◽  
Fiber Reinforced Polymer ◽  
Rc Beam ◽  
The Finite Element Method ◽  
Reinforced Polymer ◽  
Element Simulation

The finite element modeling is established for reinforced concrete(RC) beam reinforced with fiber reinforced polymer (FRP) using the serial/parallel mixing theory. The mixture algorithm of serial/parallel rule is studied based on the finite element method. The results obtained from the finite element simulation are compared with the experimental data. The comparisons are made for load-deflection curves at mid-span. The numerical analysis results agree well with the experimental results. Numerical results indicate that the proposed procedure is validity.

The Vibration Characteristics Analysis of Miter Gate Based on ANSYS Workbench and Vibration Test

2013 ◽  
Vol 380-384 ◽  
pp. 64-68
Author(s):  
Xin Ze Zhao ◽  
Rui Feng Wang ◽  
Jie Wang ◽  
Mei Yun Zhao
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Strain Distribution ◽  
Vibration Test ◽  
Stress And Strain ◽  
Static Structure ◽  
Skeleton Model ◽  
Element Simulation ◽  
Stress And Strain Distribution ◽  
Ansys Workbench

The 3d model of miter gate has been set up based on skeleton model of Pro/E, and it has been imported into ANSYS Workbench module for static structure analysis and modal analysis. In the process of finite element simulation, the rotational constraints has been imposed on the top and bottom pivot according to the actual operation situation of the miter gate, and obtain the first several order frequencies and corresponding modal vibration mode of the miter gate, which can show the hydrodynamic vibration stress and strain distribution. According to the results of the finite element simulation analysis, the prototype vibration test of the miter gate has been done. The test results show that the vibration amplitude and the stress and strain distribution of each part of the miter gate are corresponding to the vibration test.

Research on Strain Transfer of Beam Sensor Based on Ansys Workbench

2021 ◽  
Vol 105 ◽  
pp. 211-220
Author(s):  
Bei Li ◽  
Xiao Jun Zuo ◽  
Xiang Gao
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Mathematic Model ◽  
Stress And Strain ◽  
Strain Transfer ◽  
Element Simulation ◽  
Calibration Experiment ◽  
Beam Shear ◽  
Key Dimensions ◽  
Ansys Workbench

In this paper, the structural strain of the beam shear stress sensor is optimized, and the average strain of the strain sensor is simulated by Ansys Workbench. Firstly, the mathematic model of the beam sensor is established, and the stress and strain of the model are analyzed theoretically. Secondly, the finite element modeling of the sensor is carried out, and the finite element simulation of Ansys Workbench is carried out. The key dimensions of strain measurement are studied by parameter driven. Then the simulation results show that the effect of the production patch error on the output is quantitatively analyzed. Finally, the feasibility of mathematical model theory and finite element simulation is verified by calibration experiment.

Finite Element Simulation of Performance Characteristics of Infinitely Wide Plane Pad Slider Bearing

2009 ◽  
Vol 62-64 ◽  
pp. 637-642 ◽  
Author(s):  
M.H. Oladeinde ◽  
John A. Akpobi
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Finite Element Simulation ◽  
Frictional Force ◽  
Maximum Point ◽  
The Finite Element Method ◽  
Slider Bearing ◽  
Aspect Ratios ◽  
Element Simulation ◽  
Element Method

The paper describes the results of a numerical study using Galerkin’s finite element method on an infinitely wide slider bearing. The analysis is based upon the generalized Reynolds equation with the assumption that the pressure gradient in the lubricating film is negligible in the axial direction. Detailed results for bearing characteristics including pressure, load capacity, frictional force, frictional coefficient as a function of film thickness ratio (aspect ratio), and velocity of slider show that these parameters have a strong influence on the bearing behavior. Specifically, it has been shown that friction coefficient and frictional force increases with lower aspect ratios. Also, higher load carrying and maximum pressure is obtained with increased speed of the slider Point wise comparison of the results obtained using the Finite Element Method and that obtained with second order Finite Difference marching Method using base parameters show that the latter simulation has a maximum point wise error of 0.46% in comparison to 0.32% for Finite Element simulation. It has been shown that the Finite Element Method produces more accurate results. The results are in tabular and graphical forms.

scholarly journals Acoustic Noise Computation of Electrical Motors Using the Boundary Element Method

Energies ◽  
2020 ◽  
Vol 13 (1) ◽  
pp. 245
Author(s):  
Sabin Sathyan ◽  
Ugur Aydin ◽  
Anouar Belahcen
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Boundary Element Method ◽  
Boundary Element ◽  
Finite Element Simulation ◽  
Acoustic Noise ◽  
The Finite Element Method ◽  
Magnetic Forces ◽  
Element Simulation ◽  
Element Method

This paper presents a numerical method and computational results for acoustic noise of electromagnetic origin generated by an induction motor. The computation of noise incorporates three levels of numerical calculation steps, combining both the finite element method and boundary element method. The role of magnetic forces in the production of acoustic noise is established in the paper by showing the magneto-mechanical and vibro-acoustic pathway of energy. The conversion of electrical energy into acoustic energy in an electrical motor through electromagnetic, mechanical, or acoustic platforms is illustrated through numerical computations of magnetic forces, mechanical deformation, and acoustic noise. The magnetic forces were computed through 2D electromagnetic finite element simulation, and the deformation of the stator due to these forces was calculated using 3D structural finite element simulation. Finally, boundary element-based computation was employed to calculate the sound pressure and sound power level in decibels. The use of the boundary element method instead of the finite element method in acoustic computation reduces the computational cost because, unlike finite element analysis, the boundary element approach does not require heavy meshing to model the air surrounding the motor.

Analysis of Front End Bending in Plate Rolling by The Finite Element Method

1997 ◽  
Vol 119 (3) ◽  
pp. 314-323 ◽  
Author(s):  
B. H. Park ◽  
S. M. Hwang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Finite Element Simulation ◽  
Empirical Model ◽  
The Finite Element Method ◽  
Roll Speed ◽  
Speed Difference ◽  
Front End ◽  
Plate Rolling ◽  
Element Simulation

This paper deals with the problem of the front end bending arising in plate rolling. The problem, which is caused by unbalanced rolling, is investigated by the finite element simulation technique. Discussions are made on the effect of various unbalanced rolling conditions on the deformation of the front end. In particular, an empirical model is developed for the prediction of the curvature of the front end rolled under the presence of the roll speed difference.

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