Dynamics Analysis and Simulation of Drum Washing Machine Vibration Isolation System

2013 ◽  
Vol 441 ◽  
pp. 439-442
Author(s):  
Rui Ying Shao ◽  
Hong Jun Wang ◽  
Juan Song ◽  
Hai Yan Wang
Keyword(s):  
Vibration Isolation ◽  
Simulation Analysis ◽  
Virtual Prototype ◽  
Dynamics Simulation ◽  
Prototype Model ◽  
Washing Machine ◽  
Isolation System ◽  
Vibration Isolation System ◽  
Machine Vibration ◽  
Theory Research

Based on the theory research and virtual prototype technology, the dynamics characteristics of drum washing machine vibration isolation system is studied and analyzed. According to the Lagrange method, the dynamics equations and motion differential equations of drum washing machine vibration isolation system is established. Through the establishment of rigid parameterized virtual prototype model of the vibration system, dynamics simulation analysis is accomplished based on ADAMS, the kinematics characteristics and mechanical characteristics are obtained.

Design and Simulation of Fully Mechanized Hydraulic Support

2014 ◽  
Vol 644-650 ◽  
pp. 199-202
Author(s):  
Pei Qin Wang ◽  
Zeng Shun Xu ◽  
Zuo Feng Sun ◽  
Hui Yuan Jiang
Keyword(s):  
Mechanical Properties ◽  
Mathematical Model ◽  
Mechanical Model ◽  
Simulation Analysis ◽  
Virtual Prototype ◽  
Dynamics Simulation ◽  
Prototype Model ◽  
Design Calculation ◽  
Hydraulic Support ◽  
Element Analysis

Based on theoretical calculation, virtual prototype technology and the method of finite element analysis, the fully mechanized hydraulic support is designed and simulated. Firstly, the four-link mechanism of hydraulic support mechanical model and mathematical model are established, the demission is confirmed by design calculation of structure. Secondly, through the establishment of rigid parameterized virtual prototype model of the system, dynamics simulation analysis and research is finished based on ADAMS on the mechanical properties. Finally, based on FEA, the modal calculation of key components is completed by using ANSYS.

Simulation on Vibration Isolation System for Vibratory-Drum Test Stand

2013 ◽  
Vol 365-366 ◽  
pp. 351-355 ◽  
Author(s):  
Zhi Feng Zhang ◽  
Hui Gan Xu ◽  
Xian Ning Kong ◽  
Yun Shi Yao
Keyword(s):  
Vibration Isolation ◽  
Performance Test ◽  
Simulation Analysis ◽  
Test Stand ◽  
Test Field ◽  
Test Results ◽  
Isolation System ◽  
Vibration Isolation System ◽  
Rubber Tire ◽  
Vibration Performance

the reliability and vibration performance test of vibratory rollers have been done in the test field to ensure that the vibratory roller meet the quality requirement. At present, the indoor test stand for vibratory roller has not yet been studied at home and abroad. This paper designs the indoor test stand for vibratory roller and makes simulation analysis by the numerical model of vibration-drum and test stand. The vibration isolation system of test stand is determined as a function of the test stand mass (m2), the stiffness of rubber tire (k1) and the stiffness of the vibration isolation block (k2). The test results showed that the vibration drum-test stand model can account for the vibration isolation system.

Design and Fabrication of Active Vibration Isolation System for Free Space Optics Communication

2012 ◽  
Vol 576 ◽  
pp. 753-756
Author(s):  
Khairiah K. Turahim ◽  
Asan G.A. Muthalif ◽  
Syazwani A. Rahim
Keyword(s):  
Data Transmission ◽  
Free Space ◽  
Vibration Isolation ◽  
Virtual Prototype ◽  
Free Space Optics ◽  
Isolation System ◽  
Vibration Isolation System ◽  
Space Optics ◽  
Active Vibration ◽  
Active Vibration Isolation

Free Space Optics (FSO) communication is a technology widely used today. It involves transmission of data from a transmitter to a receiver. In order to achieve successful data transmission, a continuous alignment between the transmitter and receiver telescope is needed. If not, misalignment will happen due to certain factors. Vibration at the transmitter or the receiver is one of the factors that contribute to misalignment. In this work, active vibration isolation (AVI) system is designed and fabricated in order to improve the performance of the transmitter and receiver in an FSO link. First, a virtual prototype is designed. Then a real prototype is fabricated to implement AVI. The result after applying a controller to the AVI system shows 33.1% reduction in amplitude of displacement of the top plate, in other words reduction in amplitude of vibration.

Semi-Active Method of Motion Stabilization Applied to Mechanical System with the Constant Reaction Force Vibroisolation (CRF) – Model Study

2016 ◽  
Vol 248 ◽  
pp. 103-110
Author(s):  
Marian Witalis Dobry
Keyword(s):  
Mathematical Model ◽  
Energy Efficiency ◽  
Mechanical System ◽  
Vibration Isolation ◽  
Reaction Force ◽  
Magnetorheological Damper ◽  
Dynamics Simulation ◽  
System Stability ◽  
Isolation System ◽  
Vibration Isolation System

The use of the CRF vibration isolation system with zero natural frequency for machinery and equipment in the Earth's gravity field requires stabilization of motion because of its high susceptibility. For this purpose, an additional spring element with a low elastic coefficient “k1” and a semi-active damper “c (t, x, v, ff)”, was included in the vibration isolation system and parallel-attached to the CRF vibroisolator. Investigation of the effect of the additional element to stabilize the motion of the mechanical system was carried out by a numerical simulation of its motion. The simulation was based on a physical and mathematical model of the system including the spring and the magnetorheological damper (MR). The mathematical model was then used to develop a dynamics simulation program of the system and conduct simulations using sample data in order to study transitional processes and their stability. Simulation results indicate a substantially improved stability of motion in the system. Stability studies of motion were also combined with an analysis of power distribution in the system. The aim of this study was to determine energy efficiency of the system developed, defined as the ratio of the RMS power of the exciting force to RMS power of the elastic force. The resulting energy efficiency of CRF vibroisolation was equal to 5168 for a simulation period of 6 seconds.

scholarly journals Analysis of vibration isolation performance of parallel air spring system for precision equipment transportation

2019 ◽  
Vol 52 (3-4) ◽  
pp. 291-302 ◽  
Author(s):  
Di Qu ◽  
Xiandong Liu ◽  
Guangtong Liu ◽  
Yifan Bai ◽  
Tian He
Keyword(s):  
Vibration Isolation ◽  
Rigid Body Dynamics ◽  
Dynamics Simulation ◽  
Railway Transportation ◽  
Air Spring ◽  
Isolation System ◽  
Vibration Isolation System ◽  
Precision Equipment ◽  
Spring System ◽  
Isolation Requirements

Precision equipment is usually accompanied with vibrations during road or railway transportation. Sometimes the vibration exceeds the given limit, leading to the damage of the equipment. It is necessary to control the vibration during the transportation. However, it is still difficult to adjust the parameters of a designed vibration isolation system for the transportation of different precision equipment under various road conditions. Aiming at satisfying the vibration isolation requirements of different precision equipment, this paper proposes a parallel air spring vibration isolation system based on the principle of limiting lateral deflection. According to the measured parameters, a rigid-body dynamics simulation model of parallel air spring vibration isolation system is established. Then its feasibility is verified, and the optimal parameters of the vibration isolation system are obtained by a simulation. Finally, the vibration isolation system is built and installed in the equipment to carry out the real vehicle transportation test. The test results show that the transportation vibration isolation system based on the parallel air spring structure has not only excellent vibration isolation efficiency but also acceptable lateral stability. The research results in this paper can provide a reference for the design of the vibration isolation system for the large precision equipment transportation.

Simulation and Optimization Design of Inversion Six-Bar Linkage on Loader

2013 ◽  
Vol 416-417 ◽  
pp. 1822-1825
Author(s):  
Ying Li Zu ◽  
Jin Wei
Keyword(s):  
Optimization Design ◽  
Simulation Analysis ◽  
Virtual Prototype ◽  
Dynamics Simulation ◽  
Prototype Model ◽  
Constraint Condition ◽  
Operation Performance ◽  
Simulation And Optimization ◽  
Design Variables ◽  
Parameterized Model

Based on the combination of the virtual prototype technology and dynamics simulation analysis software ADAMS of mechanical system, parameterized model ZL50 wheel loader equipment is established. According to the characteristics of the loading operation of equipment, with 18 parameters of the hinge point of inversion six-bar linkage as design variables, with loading operation performance index as the objective function, considering the structure and avoiding movement interference for constraint condition, multi-objective optimization design for the virtual prototype model of articulated point position is calculated.

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