The Dynamic Characteristic Analysis of Vibration System for Longitudinal and Torsional Ultrasonic Vibration Honing

2014 ◽  
Vol 633-634 ◽  
pp. 1289-1293
Author(s):  
Hong Bing Zhao ◽  
Xue Hong Shen
Keyword(s):  
Ultrasonic Vibration ◽  
Performance Optimization ◽  
Structure Design ◽  
Mode Analysis ◽  
Response Analysis ◽  
Movement Trajectory ◽  
Vibration System ◽  
Characteristic Analysis ◽  
Processing Efficiency ◽  
Element Analysis

The tool’s unique movement trajectory in longitudinal and torsional ultrasonic machining technology can help chip extraction. Cutting liquid can offer good lubrication, cleaning and cooling. It also can prolong tool’s life, improve the processing quality and processing efficiency, so it is widely used in precision and ultra-precision machining. It builds the model of ultrasonic vibration system, based on the motion analysis of longitudinal and torsional ultrasonic vibration honing. In addition, mode analysis, transient dynamic analysis and harmonic response analysis are carried out by means of finite element analysis software ANSYS. Using graphics and curve in the postprocessing module describe the results of numerical simulation. It can provide powerful model and theoretical basis for the structure design and performance optimization of ultrasonic vibration system, which is used for longitudinal and torsional ultrasonic vibration honing.

Key Factors Affecting the Amplitude of a Composite Ultrasonic Wiredrawing Vibration System

2012 ◽  
Vol 157-158 ◽  
pp. 395-399 ◽  
Author(s):  
Xiao Biao Shan ◽  
Nai Ming Qi ◽  
Li Li Wang ◽  
Tao Xie
Keyword(s):  
Cross Section ◽  
Ultrasonic Vibration ◽  
Variable Cross Section ◽  
Experimental Result ◽  
Variable Cross ◽  
Vibration System ◽  
Key Factors ◽  
Element Analysis ◽  
Factors Affecting ◽  
The Finite Element Analysis

This paper studied the key factors affecting the amplitude of a composite ultrasonic wiredrawing vibration system, for designing a powerful ultrasonic vibration system. The finite element analysis (FEA) was performed. The results showed that the variable cross-section shapes of horns and the angles between the connection of both ends of the cross-section and the center line had great effects on the amplitude of an ultrasonic vibration system. In order to valid the theoretical result, the experiments were carried out on a composite ultrasonic vibration system. The experimental result demonstrated that the conical variable cross-section rods used in an ultrasonic vibration system produced large amplitude.

The Transient Response Analysis for the Damped Free Vibration of Plywood Box

2011 ◽  
Vol 338 ◽  
pp. 513-516 ◽  
Author(s):  
Yi Ding ◽  
Ying Xiang ◽  
Shan Qi Zeng ◽  
Yan Bo Yang
Keyword(s):  
Free Vibration ◽  
Structural Reliability ◽  
Reference Value ◽  
External Pressure ◽  
Structure Design ◽  
Response Analysis ◽  
Element Analysis ◽  
Mass System ◽  
Time Stress ◽  
The Finite Element Analysis

Aiming at the unreasonable phenomenon of the plywood box′ design in the current market, the mechanics research for the structure design of the plywood box was taken. In this paper, a damping spring-mass system for the plywood box is established by using the finite element analysis software ANSYS. In the case of simulated external pressure, analyzed the transient dynamic response, the relation between displacement and time, stress and time were gained in order to verify the structural reliability of the damped free vibration of plywood box during the carriage. Finally, the reliable basis for the design of plywood box was provided, the certain reference value of the standardized and the serialized production for plywood box was provided, as well as the basis of some analysis for the design of cushioning.

Dynamic Characteristic Analysis of the Horizontal Machine Center

2010 ◽  
Vol 97-101 ◽  
pp. 3671-3676
Author(s):  
Li Zhang ◽  
Liang Wei Zhong
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
Response Analysis ◽  
Main Shaft ◽  
Characteristic Analysis ◽  
Element Analysis ◽  
Machine Center ◽  
Harmonic Response ◽  
Machining Force ◽  
Harmonic Response Analysis

Modal analysis of machine center was carried out by means of finite-element analysis (FEA) method to get its characteristics and to improve its machining precision. Based on this, harmonic response analysis was processed to evaluate its vibration when the cycle load caused by the machining force was applied on the main shaft of machine center, which was used to provide clues for avoiding resonance vibration and ameliorating design.

Analysis of Dynamic Characteristics of Structure Design of Bridge Crane in 65t

2013 ◽  
Vol 482 ◽  
pp. 109-112 ◽  
Author(s):  
Jing Yang ◽  
Yu De Dong
Keyword(s):  
Dynamic Characteristics ◽  
Steel Structure ◽  
Structure Design ◽  
Bridge Crane ◽  
Characteristic Analysis ◽  
Element Analysis ◽  
Permissible Stress ◽  
Design Efficiency ◽  
Container Crane ◽  
The Finite Element Analysis

Quayside container crane, referred to as the bridge crane. The steel structure is usually the permissible stress method is adopted to design check, analysis on its dynamic characteristics through the finite element analysis, can the actual working state simulation of crane more accurate. The dynamic characteristic analysis of problem, change to correct the parameters in the design, greatly improved the design efficiency and accuracy .

Experimental Research on the Vibration Characteristics of Flexural Vibration Disk

2010 ◽  
Vol 97-101 ◽  
pp. 2558-2561
Author(s):  
Lin Zhu ◽  
Ji Yun Li
Keyword(s):  
Resonant Frequency ◽  
Ultrasonic Vibration ◽  
Reference Value ◽  
Flexural Vibration ◽  
Structure Design ◽  
Vibration Characteristics ◽  
Deep Hole ◽  
Vibration System ◽  
Maximal Amplitude ◽  
Threaded Connection

The vibration characteristics of flexural vibration disk in ultrasonic vibration system are studied through experiments. The results show that the resonant frequency of flexural vibration disk reduces with the reducing of its thickness and the resonant frequency increases with the reducing of its diameter. When designing the ultrasonic vibration system, because the transformer horn and the flexural vibration disk are designedly integrated, the defects caused by the way of threaded connection can be avoided. It is found that flexural vibration is dominating in the disk with some reflected ultrasonic through experiments, at the same time, there exist amplifying characteristics in the vibration of the disk and the maximal amplitude can reach 18 μm. The corresponding results provide certain reference value for the structure design of ultrasonic vibration system and the application in ultrasonic vibration deep-hole honing.

scholarly journals Study on a longitudinal–torsional ultrasonic vibration system with diagonal slits

2017 ◽  
Vol 9 (7) ◽  
pp. 168781401770634 ◽  
Author(s):  
Tao Chen ◽  
Shuliang Liu ◽  
Wu Liu ◽  
Chaoqun Wu
Keyword(s):  
Finite Element ◽  
Ultrasonic Vibration ◽  
Element Model ◽  
Machining Process ◽  
Vibration System ◽  
Element Analysis ◽  
Output Amplitude ◽  
Hard And Brittle Materials ◽  
System Output ◽  
Relationship Of

The longitudinal–torsional ultrasonic vibration machining process is popular for machining hard and brittle materials. A longitudinal–torsional ultrasonic vibration system with diagonal slits was designed for the ultrasonic vibration machining process based on the principle of acoustics propagation in this study. Four uniform diagonal slits were cut off on the horn cylinder to transform the longitudinal ultrasonic vibration into a longitudinal–torsional composite motion. A finite element analysis was used to optimize the mechanical structure of the vibration system. Dynamic characteristics of the vibration system were numerically studied, and the relationship of diagonal slits versus the resonance frequency and amplitudes of longitudinal–torsional vibration was analyzed, so that the longitudinal–torsional output amplitude can be optimized by rational choice of structure parameters of diagonal slits. Moreover, the movement locus of the system output end was obtained by utilizing the Origin software, which was proved to be elliptical, and the accuracy of the finite element model was confirmed by comparing numerically and experimentally determined resonant characteristics. In addition, the verification of longitudinal–torsional ultrasonic vibration was proved for the designed ultrasonic vibration system.

Dynamic Analysis of Communication Cabinet Structure Design

2011 ◽  
Vol 199-200 ◽  
pp. 1113-1117
Author(s):  
Ning Ou Yang ◽  
Ying Liang ◽  
Chun Yue Huang ◽  
He Geng Wei
Keyword(s):  
Dynamic Performance ◽  
Performance Comparison ◽  
Structure Design ◽  
External Loading ◽  
Response Analysis ◽  
Optimized Design ◽  
Element Analysis ◽  
Cross Sectional ◽  
Harmonic Response Analysis ◽  
Sectional Structure

Two communication cabinet finite element analysis(FEA) models with different cross-sectional structure vertical columns were set up. Based on the two communication cabinet FEA models, modal analysis was carried out by using the subspace method; the first 6 order natural frequencies and vibration modes were obtained. Harmonic response analysis was also carried out; the displacement response of the communication cabinet structure under external loading was determined. The dynamic performance comparison of the two communication cabinets with different cross-sectional structure vertical columns was performed, as a result, an effective method is provided for communication cabinet dynamic characteristic optimized design.

scholarly journals Dynamic Response Analysis of a Bulk Carrier by Nonlinear Hydroelastic Method

2021 ◽  
Vol 9 (8) ◽  
pp. 877
Author(s):  
Zhanyang Chen ◽  
Hongbin Gui ◽  
Xiyu Liao ◽  
Mengchao Du
Keyword(s):  
Dynamic Response ◽  
Three Dimensional ◽  
Beam Theory ◽  
High Strength ◽  
Structure Design ◽  
Response Analysis ◽  
Restoring Force ◽  
Element Analysis ◽  
Response Method ◽  
Classical Beam Theory

With increasing demands for huge ship dimensions and the wide use of high-strength steel, the influence of slamming and elastic structure on structural strength cannot be ignored. Therefore, in this paper, a three-dimensional (3D) nonlinear hydroelastic theory is introduced, in which the nonlinear hydrostatic restoring force caused by instantaneous wetted surface as well as slamming force are taken into consideration, and the bending moments with/without slamming effects are calculated, respectively. Numerical simulations of the dynamic response of a flexible hull at different speeds are carried out using the finite element analysis software MSC/PATRAN. By comparison with the results of classical beam theory, the accuracy of the dynamic analysis method is studied. Finally, the dynamic response method is compared with the quasi-static method and classical beam theory. By analyzing and quantifying the influence of forward speed and nonlinear factors on structural responses, the reasonable applicable conditions for different methods are discussed, which can be used as reference in the structure design of bulk carriers.

Study on Dynamic Characteristics of the Position Apparatus Based on ANSYS/WORKBENCH

2012 ◽  
Vol 200 ◽  
pp. 147-150
Author(s):  
Yi Ding ◽  
Sheng Li Ma ◽  
Li Juan Zhao
Keyword(s):  
Dynamic Characteristics ◽  
Optimization Design ◽  
Response Analysis ◽  
Characteristic Analysis ◽  
Element Analysis ◽  
Structural Dynamic ◽  
Structural Dynamic Characteristics ◽  
Harmonic Response Analysis ◽  
Linear Buckling Analysis ◽  
Ansys Workbench

In order to improve the reliability of the position apparatus for vehicle seats, this paper researched on the dynamic characteristics of the position apparatus by the simulated method of finite element analysis software ANSYS/WORKBENCH. Accordingly, the results of modal analysis, harmonic response analysis and that of linear buckling analysis were obtained. That provides a basis for the vibration characteristic analysis, the diagnosis and forecast of the vibration fault as well as the optimization design of the structural dynamic characteristics.

Optimal Design and Test of Ultrasonic Vibration System

2012 ◽  
Vol 226-228 ◽  
pp. 21-25 ◽  
Author(s):  
Xin Lei Miao ◽  
Yong Wei Zhu
Keyword(s):  
Finite Element ◽  
Ultrasonic Vibration ◽  
Optimization Design ◽  
Natural Vibration ◽  
Dynamic Performance ◽  
Vibration System ◽  
Element Analysis ◽  
The Finite Element Analysis ◽  
Analysis Package ◽  
Structure Dimension

Ultrasonic vibration system is the chief component of USM machine tool. Whether products are precisely machined is lie on the performance of the system. To design good performance of ultrasonic vibration system, finite element method is used to analyse the dynamic performance of the system based on theoretic calculation. The dynamic performance of transformer and transformer with tool is analysed respectively, including natural vibration characteristic and harmonic characteristic. The result of FEA is compared with theoretic calculation. The parametric optimization design technique of the finite element analysis package ANSYS is applied to optimize the structure dimension of the piezoelectric transducer and transformer with tool. Then amplitude of the optimized system and the previous system is compared based on laser-CCD sensor for micro-displacement. The optimized system is more superior and has larger amplitude. Last some round holes are machined on kentanium YG8, monocrystalline silicon, PZT. And machining effect of single Micro-USM is got by the test.

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