scholarly journals Finite element simulation of coupled vibration modes in an ultrasonic cleaning tub: Effect of the presence of a washing object

2004 ◽  
Vol 25 (2) ◽  
pp. 173-176 ◽  
Author(s):  
Ying Liu ◽  
Tatsuo Yamabuchi ◽  
Toshio Yoshizawa ◽  
Sigeki Hirobayashi
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Vibration Modes ◽  
Coupled Vibration ◽  
Ultrasonic Cleaning ◽  
Element Simulation

Optimization for Pipeline System of Air-Conditioner Based on Finite Element Simulation

2011 ◽  
Vol 121-126 ◽  
pp. 2151-2155
Author(s):  
Su Yang Li ◽  
Jun Guo ◽  
Xiao Wei Zhang ◽  
Wen Yan Tang
Keyword(s):  
Finite Element ◽  
Finite Element Simulation ◽  
Natural Frequencies ◽  
Pipeline System ◽  
Optimized Design ◽  
Vibration Modes ◽  
Air Conditioner ◽  
Vibration Displacement ◽  
Element Simulation ◽  
Working Frequency

Modal analysis was carried out to calculate the natural frequencies and vibration modes of 20 orders for a certain pipeline system of the outdoor machine of air-conditioner using finite element simulation. Excitation was exerted on the pipeline system for harmonic analysis, and the optimized design was proposed based on the analysis of simulation results. Results prove that the design by changing the direction of pipeline is more effective than that one by adding damping blocks to improve the natural frequency of pipeline system, and the optimized design can avoid the resonance zone of the working frequency of compressor. Besides, the maximum vibration displacement is also greatly decreased.

Finite Element Simulation of Tire-Rim Interface

1989 ◽  
Vol 17 (4) ◽  
pp. 305-325 ◽  
Author(s):  
N. T. Tseng ◽  
R. G. Pelle ◽  
J. P. Chang
Keyword(s):  
Finite Element ◽  
Finite Element Model ◽  
Finite Element Simulation ◽  
Contact Pressure ◽  
Element Model ◽  
Experimental Measurements ◽  
Inflation Pressure ◽  
Interference Fit ◽  
Element Simulation ◽  
Rubber Composite

Abstract A finite element model was developed to simulate the tire-rim interface. Elastomers were modeled by nonlinear incompressible elements, whereas plies were simulated by cord-rubber composite elements. Gap elements were used to simulate the opening between tire and rim at zero inflation pressure. This opening closed when the inflation pressure was increased gradually. The predicted distribution of contact pressure at the tire-rim interface agreed very well with the available experimental measurements. Several variations of the tire-rim interference fit were analyzed.

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