Harmonic Analysis of the High-Speed Winder with Unbalance Masses

2013 ◽  
Vol 300-301 ◽  
pp. 974-977
Author(s):  
Xi Hou ◽  
Hui Zhang ◽  
Sheng Ze Wang
Keyword(s):  
High Speed ◽  
Dynamic Balance ◽  
Element Model ◽  
Beam Element ◽  
Response Analysis ◽  
Rotatory Inertia ◽  
Harmonic Response ◽  
Finite Element Software ◽  
Calculation Results ◽  
Harmonic Response Analysis

A finite beam element model of the spindle which is one of key parts of the high-speed winder is presented in this paper. Critical speeds of the spindle based on the finite beam element model are obtained considering the effect of rotatory inertia, gyroscopic moments, and the damping. Harmonic response analysis of the high-speed winder spindle is developed in two conditions including static unbalance and couple unbalance. The dynamic analysis mentioned above is implemented by using the finite element software ANSYS. Calculation results in this paper are helpful for the dynamic balance of the high-speed winder spindle.

Dynamic Analysis of DVG 850 High-Speed Machining Center

2012 ◽  
Vol 487 ◽  
pp. 203-207
Author(s):  
Gong Xue Zhang ◽  
Xiao Kai Shen
Keyword(s):  
High Speed ◽  
Simulation Analysis ◽  
Response Analysis ◽  
Improved Method ◽  
Analysis Software ◽  
Element Analysis ◽  
Harmonic Response ◽  
Machining Center ◽  
Calculation Results ◽  
Harmonic Response Analysis

Purpose, with the application of workbench finite element analysis software, get the analysis results of DVG 850 high-speed vertical machining center via the modal analysis and harmonic response analysis. Use the calculation results for reference, put forward the improved method, and prove the credibility of the simulation analysis by testing DVG 850 prototype.

Calculating Mechanics Characteristics of Single-Walled Carbon Nanotube Materials by Finite Element Method

2017 ◽  
Vol 730 ◽  
pp. 548-553
Author(s):  
Jing Ge ◽  
Hao Jiang ◽  
Zhen Yu Sun ◽  
Guo Jun Yu ◽  
Bo Su ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Finite Element ◽  
Radial Direction ◽  
Element Model ◽  
Beam Element ◽  
Beam Position ◽  
Single Walled Carbon ◽  
Finite Element Software ◽  
Calculation Results ◽  
The Moment

In this paper, we establish the mechanical property analysis of Single-walled Carbon Nanotubes (SWCNTs) modified beam element model based on the molecular structural mechanics method. Then we study the mechanical properties of their radial direction characteristics using the finite element software Abaqus. The model simulated the different bending stiffness with rectangular section beam elements C-C chemical force field. When the graphene curled into arbitrary chirality of SWCNTs spatial structure, the adjacent beam position will change the moment of inertia of the section of the beam. Compared with the original beam element model and the calculation results, we found that the established model largely reduced the overestimate of the original model of mechanical properties on the radial direction of the SWCNTs. At the same time, compared with other methods available in the literature results and the experimental data, the results can be in good agreement.

scholarly journals Design optimization of vehicle asynchronous motors based on fractional harmonic response analysis

2021 ◽  
Vol 12 (1) ◽  
pp. 689-700
Author(s):  
Ao Lei ◽  
Chuan-Xue Song ◽  
Yu-Long Lei ◽  
Yao Fu
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Natural Frequency ◽  
Asynchronous Motor ◽  
Element Model ◽  
Design Parameters ◽  
Response Analysis ◽  
Harmonic Response ◽  
First Order ◽  
Harmonic Response Analysis

Abstract. To make vehicles more reliable and efficient, many researchers have tried to improve the rotor performance. Although certain achievements have been made, the previous finite element model did not reflect the historical process of the motor rotor well, and the rigidity and mass in rotor optimization are less discussed together. This paper firstly introduces fractional order into a finite element model to conduct the harmonic response analysis. Then, we propose an optimal design framework of a rotor. In the framework, objective functions of rigidity and mass are defined, and the relationship between high rigidity and the first-order frequency is discussed. In order to find the optimal values, an accelerated optimization method based on response surface (ARSO) is proposed to find the suitable design parameters of rigidity and mass. Because the higher rigidity can be transformed into the first-order natural frequency by objective function, this paper analyzes the first-order frequency and mass of a motor rotor in the experiment. The results proved that not only is the fractional model effective, but also the ARSO can optimize the rotor structure. The first-order natural frequency of asynchronous motor rotor is increased by 11.2 %, and the mass is reduced by 13.8 %, which can realize high stiffness and light mass of asynchronous motor rotors.

Structure Analysis of FTIR Infrared Spectrometer Based on ANSYS/Workbench

2012 ◽  
Vol 246-247 ◽  
pp. 189-193
Author(s):  
Zhao Ming Chen ◽  
Guo Tian He ◽  
Ji Ming He ◽  
Ze Yu Xu ◽  
Yuan Chang Lin ◽  
...  
Keyword(s):  
Modal Analysis ◽  
Three Dimensional ◽  
Element Model ◽  
Response Analysis ◽  
Modal Shape ◽  
Harmonic Response ◽  
Infrared Spectrometer ◽  
Harmonic Response Analysis ◽  
Three Dimensional Finite Element ◽  
Ansys Workbench

The CAD software SolidWorks was used to create a three-dimensional finite element model of FTIR infrared spectrometer, and the model was imported into ANSYS/Workbench to modal analysis and harmonic response analysis. Through modal analysis, each order natural frequency and vibration shape were obtained. From modal shape analysis, all components of the stiffness strength and elastic deformation situation were got, and many times tests were carried to enhance stability of the structure and materials which had the most seriously deformation and direct effect impact to the quality of interferometer. The most sensitive frequency range of the system was concluded by harmonic response analysis, which provided a basis for further designing and improving of the spectrometer performance.

Based on Concept of Generalized Instantaneous Space of Dynamic Performance Analysis

2014 ◽  
Vol 672-674 ◽  
pp. 1540-1544
Author(s):  
Ao Xiang Liu ◽  
Jun Wang ◽  
Jun Xian Kang ◽  
Qiang Zhang ◽  
Jun Sun ◽  
...  
Keyword(s):  
Modal Analysis ◽  
Dynamic Performance ◽  
Three Dimensional ◽  
Element Model ◽  
Response Analysis ◽  
Response Curves ◽  
Harmonic Response ◽  
Harmonic Response Analysis ◽  
Specific Material ◽  
Dynamic Performance Analysis

TX1600 boring and milling machining center milling part was studied. The Three-dimensional solid model was established based on Solidworks. Simultaneously, modal analysis was carried out by ANSYS Workbench software, the first six natural frequencies and corresponding modes were acquired. Based on the modal analysis, the harmonic response analysis of milling part was conducted,and the response curves of the three main motion orientation were obtained respectively, the vibration performance of milling part under forces was further explored,and the finite element model was validated. The feasibility of the model to simplify the program was verified by modal and harmonic response analysis. The study provides a good basis in terms of selecting a specific material. The structures and material are optimized. Ultimately, a lot of energy is saved.

Design and Analysis of Timing Screw Based on B-Spline Curve

2014 ◽  
Vol 602-605 ◽  
pp. 511-516
Author(s):  
Chang Qing Zhong ◽  
Yong Lin Zhang
Keyword(s):  
Mathematical Model ◽  
Modal Analysis ◽  
High Speed ◽  
Response Analysis ◽  
B Spline ◽  
Harmonic Response ◽  
Spline Curve ◽  
Harmonic Response Analysis ◽  
Section Type ◽  
Velocity Mutation

In order to reduce the vibration of the high speed timing screw and optimize the manufacturing process of classic three-section high speed timing screw. Mathematical model of three-section high speed timing screw is rebuilt based on B-spline curve and a general mathematical model for the screw. Thus result a new one-section form instead of old three-section type. Then the displacement and speed is simulated in MATLAB. After that,modal analysis and harmonic response analysis have been done in ANSYS. Whose results show that new one-section high speed timing screw which can meet the request of three-section. New one-section high speed timing screw has no velocity mutation, which reduces the vibration of the high speed timing screw. According to the result of modal analysis and harmonic response analysis, the vibration is reduced about 20%.

Process Parameters Research of Vibratory Stress Relief for Large Casting

2012 ◽  
Vol 462 ◽  
pp. 173-179
Author(s):  
Ai Min Liu ◽  
Yan Zhao Han
Keyword(s):  
Finite Element ◽  
Stress Relief ◽  
Response Analysis ◽  
Kinetics Analysis ◽  
Technological Parameters ◽  
Harmonic Response ◽  
Finite Element Software ◽  
Vibration Stress ◽  
Large Casting ◽  
Harmonic Response Analysis

Taking the generator as research object, this paper was trying to determinate the parameters of vibration stress relief with a new method by the aid of finite element software with powerful function. Firstly, size and distribution of remnant stress were determined. Then the modality analysis and harmonic response analysis were carried on the workpiece by using the kinetics analysis function of finite element method. Finally, some crucial parameters of vibration stress relief were obtained.The research method and conclusion would provide the important reference values for casting enterprise to determine technological parameters of vibration stress relief.

Design and Harmonic Response Analysis of a Kind of Load Simulator

2010 ◽  
Vol 145 ◽  
pp. 307-312
Author(s):  
Yong Ling Fu ◽  
Hui Qiang Jing ◽  
Kai Zhang ◽  
Wei Xing Zhou
Keyword(s):  
Dynamic Performance ◽  
Response Analysis ◽  
Superposition Method ◽  
Harmonic Response ◽  
Finite Element Software ◽  
Mode Superposition Method ◽  
Hydraulic Load ◽  
Load Simulator ◽  
Harmonic Response Analysis ◽  
Hardware In Loop

Load Simulator is a very popular machine as hardware-in-loop simulation equipment in many scientific fields recently. As to mechanical structure, dynamic performance is one of the most important factors to evaluate a load simulator and it is a difficult job for design as well. This paper presents a kind of hydraulic load simulator to meet the requirements of rocket study and harmonic response analysis, which can provide guidance for the design of the Load Simulator structure, is carried out to reveal the probable first- and second-resonance frequency with mode superposition method with the assistance of the finite element software. The results indicate that the proposed method is feasible and efficient.

Dynamic Modeling and Modal Analysis of the High-Speed Winder Spindle

2013 ◽  
Vol 281 ◽  
pp. 263-267
Author(s):  
Xi Hou ◽  
Chong Chang Yang ◽  
Sheng Ze Wang
Keyword(s):  
Finite Element ◽  
Dynamic Analysis ◽  
Modal Analysis ◽  
Performance Improvement ◽  
High Speed ◽  
Model Comparison ◽  
Element Model ◽  
Finite Element Software ◽  
Calculation Results ◽  
Made In

A model of the spindle which is one of key parts of the high-speed winder is presented in this paper. A cantilever type hollow bobbin, a flexible shaft, bearings, Elastomer O-Rings and the frame is included in the model. Comparison between the 3D finite solid element model and the beam element model is made in the modal analysis. Critical speeds and the corresponding whirling motions are obtained from the beam finite element model considering the effect of rotatory inertia, gyroscopic moments, and the damping. The dynamic analysis mentioned above is implemented by using the finite element software ANSYS. Calculation results in this paper facilitate the following dynamic analysis and a foundation for the performance improvement of the high-speed winder.

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