Dynamics Behaviors Analysis on the Column of Gear Grinding Machine

2012 ◽  
Vol 472-475 ◽  
pp. 1885-1888
Author(s):  
Ya Hui Wang ◽  
Xiao Zhong Ren
Keyword(s):  
Theoretical Basis ◽  
Natural Frequencies ◽  
Element Model ◽  
Vibration Modes ◽  
Ansys Software ◽  
Dynamic Behaviors ◽  
Structural Improvement ◽  
Gear Grinding ◽  
Column Structure ◽  
Grinding Machine

Aiming at the issue on the development of gear form grinding machine, a method for analyzing the dynamic behaviors of the machine column was introduced. Based on the model of gear grinding machine developed before, a suitable finite element model of the column was established firstly. Modal analysis on the column was carried out by means of ANSYS software, and the first five natural frequencies and vibration modes of the column were obtained. According to the analysis results, some improvements on the original column structure were made. By comparing the static and dynamic behaviors of several different rib structures presented, the best column structure is selected. This method offers theoretical basis for the structural improvement of gear grinding machine.

Modal Analysis and Optimization of Spindle Box of Turn-Milling Center Based on Finite Element Method

2012 ◽  
Vol 226-228 ◽  
pp. 281-284
Author(s):  
Li Da Zhu ◽  
Xiao Bang Wang ◽  
Tiao Biao Yu ◽  
Wan Shan Wang
Keyword(s):  
Finite Element ◽  
Natural Frequencies ◽  
Element Model ◽  
Ansys Software ◽  
Design Requirement ◽  
Design Quality ◽  
Machining Center ◽  
Main Components ◽  
Turn Milling

The dynamic characteristics of machine tool may directly affect its machining capability, which is analyzed to improve the machining precision and efficiency. In this paper, the 3D finite element model of main components turn-milling center is established by using ANSYS software, and then spindle box of turn-milling center is analyzed and optimized; the natural frequencies and vibration models are obtained after analysis, which guarantee the design requirement of the machining center. Therefore it is significant to improve the design quality of machining center by using FEA software in the design process.

Dynamic Characteristics of a Long-Span Cable-Stayed Bridge

2011 ◽  
Vol 480-481 ◽  
pp. 1496-1501
Author(s):  
Liu Hui
Keyword(s):  
Finite Element ◽  
Dynamic Characteristics ◽  
Iteration Method ◽  
Natural Frequencies ◽  
Element Model ◽  
Vibration Modes ◽  
Cable Stayed Bridge ◽  
Long Span ◽  
Subspace Iteration ◽  
Floating System

In order to study the dynamic characteristics of a super-long-span cable-stayed bridge which is semi-floating system, the spatial finite element model of this cable-stayed bridge was established in ANSYS based on the finite element theory.Modal solution was conducted using subspace iteration method, and natural frequencies and vibration modes were obtained.The dynamic characteristics of this super-long-span cable-stayed bridge were then analyzed.Results showed that the super-long-span cable-stayed bridge of semi-floating system has long basic cycle, low natural frequencies, dense modes and intercoupling vibration modes.

Vibration Response of a Thin-Walled Cylindrical Pipe with Liquid

2012 ◽  
Vol 189 ◽  
pp. 345-349
Author(s):  
Yu Lan Wei ◽  
Bing Li ◽  
Li Gao ◽  
Ying Jun Dai
Keyword(s):  
Finite Element ◽  
Natural Frequencies ◽  
Element Model ◽  
Beam Model ◽  
Vibration Modes ◽  
Timoshenko Beam Model ◽  
Cylindrical Pipe ◽  
Bending Vibration ◽  
Beam Bending ◽  
Thin Walled

Vibration characteristics of the thin-walled cylindrical pipe are affected by the liquid within the pipe. The natural frequencies and vibration modes of the pipe without liquid are analyzed by the theory of beam bending vibration and finite element model, which is based on the Timoshenko beam model. The first three natural frequencies and vibration modes of the pipe with or without liquid are acquired by experiments. As shown in the experiment results, the natural frequencies of the containing liquid pipe are lower than the natural frequencies of the pipe without liquid.

Finite Element Analysis for the Crankshaft of the Piston Compressor

2010 ◽  
Vol 102-104 ◽  
pp. 17-21
Author(s):  
Bin Zhao
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Natural Frequencies ◽  
Piston Compressor ◽  
Element Model ◽  
Ansys Software ◽  
Element Analysis ◽  
Rotating Speed ◽  
Dynamical Characteristics ◽  
The Finite Element Model

In order to study the static and dynamical characteristics of the crankshaft, ANSYS software was used to carry out the corresponding calculations. The entity model of the crankshaft was established by UG software firstly, and then was imported into ANSYS software for meshing, and then the finite element model of the crankshaft was constructed. The crankshaft satisfied the requirement of stiffness and strength through static analysis. The top six natural frequencies and corresponding shapes were acquired through modal analysis, and the every order critical rotating speed of the crankshaft was calculated. The fatigue life of the crank was calculated by fatigue module of ANSYS software finally. These results offered the theoretical guidance for designing, manufacturing and repairing the crankshaft.

Finite Element Analysis of the Extruder Die Axis Based on ANSYS

2013 ◽  
Vol 288 ◽  
pp. 282-286
Author(s):  
Shi Jun Hu ◽  
Hong Xiang Zhang ◽  
Dai Lu Zhang
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Work Stress ◽  
Theoretical Basis ◽  
Structure Optimization ◽  
Element Model ◽  
Ansys Software ◽  
Element Analysis ◽  
Stress Variation ◽  
Control Range

In order to produce aluminum alloy pipe on 45MN reverse extruder smoothly and reduce damage of the die axis. By analyzing the structure of the die axis, establish finite element model of the die axis using SolidWorks software and make finite element analysis using ANSYS software on it. thus, come to the work stress and displacement distribution nephogram when the die axis of extruder is working. After analysis of the variation law of stress and displacement in distribution nephogram, the weakest parts of the die axis can be located when stress deformation occurs and its stress variation law when working can be found. All these work provide important theoretical basis for control range of extrusion pressure and further structure optimization of die axis of the extruder in practical production.

scholarly journals OPTIMIZATION OF SOME WEAVING MACHINE PARTS DESIGN. THEORETICAL APPROACH

2021 ◽  
Vol 2021 ◽  
pp. 215-221
Author(s):  
A. Mostafa ◽  
W. Hashima ◽  
S. El-Gholmy ◽  
A. Al-Oufy ◽  
M. Hassan
Keyword(s):  
High Speed ◽  
Natural Frequencies ◽  
Operating Time ◽  
Research Work ◽  
Element Model ◽  
Vibration Modes ◽  
Work Study ◽  
Mechanical Factors ◽  
Machine Parts ◽  
The Cost

The factors of increasing productivity, reducing the cost and the quality improvement are the most important research concerns in weaving machinery. Increasing the effectiveness and productivity of production were achieved by increasing the operating time and efficiency of weaving looms. Thus, the manufacturers of weaving equipment attempt to minimize factors that limit production speed and production conditions. Heald frame is one of the known parts of the weaving machine that causes vibrations and noise which are important factors that influence high-speed development of looms. In this research work, study of mechanical factors (stresses and vibration) has been investigated for heald shaft. Finite element model of the heald frame was constructed to simulate different type of material. Then some important natural frequencies and vibration modes are calculated and the results. Results show a major improvement with the usage of these different material. As well as the failure of heald shaft is mainly due to friction and vibration and not due to the stresses or weight.

Modal Analysis of the Cabinet of a Drum Washing Machine

2011 ◽  
Vol 199-200 ◽  
pp. 1126-1129
Author(s):  
Su Fang Fu ◽  
Han Gao ◽  
Jia Xi Du ◽  
Qiu Ju Zhang ◽  
Xue Ming Zhang ◽  
...  
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Natural Frequencies ◽  
Element Model ◽  
Mode Shapes ◽  
Ansys Software ◽  
Washing Machine ◽  
Element Analysis ◽  
The Finite Element Model ◽  
Good Agreement

In this paper, the finite element model for the cabinet of a drum washing machine and the model for testing vibration of the cabinet were developed in ANSYS software and PULSE™, respectively. A series of tests were conducted. The natural frequencies and mode shapes were obtained by finite element analysis and modal experiment, which revealed weak parts of the cabinet. Meanwhile, the computational modes were in good agreement with experimental ones and this could provide an available method by which it was convenient to improve the design of the cabinet.

Modal Analysis and Experimental Research of Marine Gearbox

2014 ◽  
Vol 607 ◽  
pp. 405-408 ◽  
Author(s):  
Wen Liu ◽  
Teng Jiao Lin ◽  
Quan Cheng Peng
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Modal Analysis ◽  
Experimental Research ◽  
Natural Frequencies ◽  
Element Model ◽  
Ansys Software ◽  
Tetrahedral Element ◽  
Spring Element ◽  
Good Agreement

The gear-shaft-bearing-housing coupled finite element model of marine gearbox was established by using the truss element, the spring element and the tetrahedral element. The modal of gearbox was analyzed by using the ANSYS software. Then through the experimental modal analysis, the natural frequencies of gearbox are obtained. Compare the experimental results with the numerical results, it shows good agreement.

Modal Analysis of Large Marine Crankshaft

2012 ◽  
Vol 271-272 ◽  
pp. 1022-1026 ◽  
Author(s):  
Yang Zhao ◽  
Shou Qi Cao
Keyword(s):  
Finite Element ◽  
Modal Analysis ◽  
Theoretical Basis ◽  
Working Condition ◽  
Natural Frequencies ◽  
Vibration Mode ◽  
Optimized Design ◽  
Ansys Software ◽  
D Model ◽  
Element Theory

Based on the modal analysis of finite element theory, in this paper, a 3-D model is built in CATIA. And simplify the details of the characteristics and constraints depengding on working condition. The Lanczons method of ANSYS software is used in the model analysis in order to obtain natural frequencies and vibration mode vectors of the former 15 orders. And the dangerous areas is located in the crankshaft. These provide a theoretical basis for the optimized design of the crankshadft.

Analysis of Dynamic Characteristics of Space Deployable Antenna Based on ANSYS

2010 ◽  
Vol 37-38 ◽  
pp. 127-130
Author(s):  
Da Ke Tian ◽  
Rong Qiang Liu ◽  
Zong Quan Deng ◽  
Hong Wei Guo
Keyword(s):  
Finite Element ◽  
Natural Frequency ◽  
Dynamic Characteristics ◽  
Optimization Design ◽  
Element Model ◽  
Truss Structure ◽  
Vibration Modes ◽  
Ansys Software ◽  
Dynamic Modification ◽  
The Finite Element Model

Analysis of dynamic characteristics is one of the important parts of structure analysis for space deployable antenna. In order to study the dynamic characteristics of truss structure for space deployable truss antenna, according to the structure composition, the finite element model of truss structure is built by using ANSYS software, and the modal analysis is carried out by finite element method, then the natural frequencies and the features of vibration modes are obtained. It is emphatically analyzed that the influence of structure parameters such as chords, vertical beams, diagonal beams and crossing cables on the first natural frequency, and the change curves of natural frequency are given. The results can provide the theoretical basis for the antenna’s structural optimization design and dynamic modification.

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