Effects of an absorber on impact characteristics in machine cushion design with area ratio modified guiding structure

Teng, Chin-Kun; Hsiao, Chao-Yin; Wang, Chung-Shing

doi:10.1016/j.simpat.2008.06.006

Cited by 4 publications

(2 citation statements)

References 17 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…While the flow field in the process of cushion is complex and changeful, proper modeling is a problem for researching cushion technology. Teng et al applied derived dynamic equations and compared different machine cushions to prove the new designed machine cushion availability of absorbing impact forces and vibration waves [12,13]. Wang et al presented a fuel calibration system and mathematically modeled the system with AMESim simulation of which the numerical result is experimentally verified [14].…”

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis on Cushion Characteristics of Fast and High-Flow-Rate Hydraulic Cylinder

Lai

Liang

et al. 2016

Mathematical Problems in Engineering

View full text Add to dashboard Cite

As an indispensable actuator, the hydraulic cylinder has widespread industrial applications in mechanical engineering. The cushion characteristics of hydraulic cylinder directly affect its performance and reliability, especially the one utilized in hydraulic system with fast response, high flow rate, and instantaneous super power. In order to analyze the cushion characteristics, three different simulation models are established. Furthermore, experiments concerning the pressure characteristics of hydraulic cylinder are accomplished to verify the validation of simulation models. It was found that the integrated simulation model had the highest precision and CFD model showed better pattern of cushion process compared with other models. On the basis of the integrated simulation model, plunger structure and key structural parameters were studied in detail with optimal schemes given. The conical structure, proper design of the diameter of cushion hole, and length of plunger turned out to be effective in promoting the cushion performance. The proposed simulation models and research of cushion structure have scientific and engineering value to promote the innovative development of hydraulic cylinder.

show abstract

Section: Introductionmentioning

confidence: 99%

Modeling and Analysis on Cushion Characteristics of Fast and High-Flow-Rate Hydraulic Cylinder

Lai

Liang

et al. 2016

Mathematical Problems in Engineering

View full text Add to dashboard Cite

show abstract

“…Moon and Lee (2010) also focus on a similar system, but in their model, transfer functions were used to describe the pneumatic and mechanic systems of the air spring. Teng et al (2008) suggested a machine cushion with an attached absorber and area ratio modified guiding structure. The proposed system had a good impact and vibration suppression capability.…”

Section: Introductionmentioning

confidence: 99%

Behavior and Optimization of Pneumatic Damping System

Bogdevičius

Prentkovskis

Junevičius

et al. 2016

Iran. J. Sci. Technol. Trans. Mech. Eng.

View full text Add to dashboard Cite

Vibration isolation is one of the most important research areas. Considerable research has been conducted in this area and on ways to reduce vibration. Pneumatic damping system with four gas chambers, which are connected by throttles in valves and permanent magnets, is considered. The mathematical model of pneumatic system is presented. The following factors are evaluated in this mathematical model: forces of pressure, friction, magnetic and contact forces between system bodies. The sensitive analysis of system parameters on which the quality of vibration isolation depends is done and critical parameters are identified. The optimization problem of pneumatic damping system with twelve parameters is presented. The frequency of external force is equal to 10 Hz. The objective function is the amplitude of the relative velocity of the fourth mass when each system parameter can be changed within an allowable interval. The objective function is minimized by the frequency range from 0 to 20 Hz. After optimization process, the value of objective function is decreased approximately three times and optimal system parameters are obtained.

show abstract