Optimal Design of Rubber Mounts Supporting Notebook HDD for Shock and Vibration Isolation

2006 ◽  
Author(s):  
Seungho Lim ◽  
Young-Bae Chang ◽  
No-Cheol Park ◽  
Young-Pil Park
Keyword(s):  
Optimal Design ◽  
Vibration Isolation

Optimal Design of Octo-Strut Vibration Isolation Platform

2006 ◽  
Vol 29 (3) ◽  
pp. 749-753 ◽  
Author(s):  
Z. Wang ◽  
L. K. Liu ◽  
G. T. Zheng
Keyword(s):  
Optimal Design ◽  
Vibration Isolation

Study on Dynamics Characteristics of SINS Damping System in Shock Environment

2013 ◽  
Vol 397-400 ◽  
pp. 355-358
Author(s):  
Xia Qing Tang ◽  
Jun Qiang Gao ◽  
Li Bin Guo ◽  
Huan Zhang
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Optimal Design ◽  
Vibration Isolation ◽  
Damping Coefficient ◽  
Shock Environment ◽  
Stiffness And Damping Coefficient ◽  
Stiffness And Damping ◽  
Element Method

Dynamics characteristics of SINS damping system in shock environment were analyzed by finite element method, as the deformation of dampers may leads to the accuracy loss of SINS. In addition, the influence of absorber stiffness and damping coefficient on dynamics characteristics were studied. The results indicate that the decoupling of vibrations is significant for the accuracy of SINS. However, considering the almost impossible of completely decoupled vibrations, its necessary to carry out an optimal design of the absorber stiffness and damping coefficient to maintain the accuracy of SINS while meeting the requirement of vibration isolation.

Practical Frequency and Time Optimal Design of Passive Linear Vibration Isolation Mounts

2003 ◽  
Vol 39 (6) ◽  
pp. 437-466 ◽  
Author(s):  
G. Nakhaie Jazar ◽  
A. Narimani ◽  
M.F. Golnaraghi ◽  
D.A. Swanson
Keyword(s):  
Optimal Design ◽  
Vibration Isolation ◽  
Linear Vibration ◽  
Time Optimal

Optimization Design of Vibration and Shock Isolation System

2006 ◽  
Author(s):  
Cun-Sheng Zhao ◽  
Shi-Jian Zhu ◽  
Zhen-Zhong Zhang
Keyword(s):  
Optimal Design ◽  
Optimization Design ◽  
Vibration Isolation ◽  
Design Method ◽  
Engineering Application ◽  
Experimental Results ◽  
Isolation System ◽  
Combination Optimization ◽  
Shock Resistance ◽  
Shock Isolation

The combination optimization design problem of vibration isolation and shock resistance system is studied in consideration of acoustical concealment performance and lifeforce of ships. The weakness of design method based on continuity is pointed out and combination optimal design method is brought forward. Then the limiting performance of shock isolation system is analyzed and two realization methods are discussed. One method is to adopt linear stiffness component with large damping. The other method is to use multiple linear stiffness components without damping. Amplitude of steady excitation is much smaller than that of shock input during experiment. Experimental results showed that the optimal loss factor is still 0.4 when the stiffness of shock bumper is much larger than that of vibration isolator, just the same with that suffered from only shock loads. Experimental results also showed that limiting performance can be achieved by configuration optimal design using multiple linear components. The two discussed methods can be used to direct engineering application.

Optimal Design of Active Vibration Isolation System

1988 ◽  
Vol 110 (1) ◽  
pp. 42-48 ◽  
Author(s):  
N. Tanaka ◽  
Y. Kikushima
Keyword(s):  
Optimal Design ◽  
Vibration Isolation ◽  
Optimization Technique ◽  
Design Procedure ◽  
Ground Vibration ◽  
Isolation System ◽  
Vibration Isolation System ◽  
Active Vibration ◽  
Series Type ◽  
Active Vibration Isolation

In order to eliminate ground vibration produced by machines such as forge hammers, press machines, etc., this paper presents a systematic and optimal design procedure of an active vibration isolation system which permits rigid support of machines. First, the principle of the active vibration method is presented. Secondly, from the viewpoint of feedback control, the active vibration isolation system with a series-type dynamic compensator is constructed. Thirdly, with the air of a parameter optimization technique, the necessary conditions for optimality of the system are derived. Fourthly, for the purpose of solving the conditions, an iterative algorithm based upon a quasi-Newton method is proposed. Finally, by using the design procedure, the active vibration isolation system is designed, and the effectiveness to isolate the vibration is discussed.

Optimal design of control valves in magnetorheological fluid dampers using a nondimensional analytical method

2012 ◽  
Vol 24 (1) ◽  
pp. 108-129 ◽  
Author(s):  
Xiaocong Zhu ◽  
Xingjian Jing ◽  
Li Cheng
Keyword(s):  
Optimal Design ◽  
Analytical Method ◽  
Vibration Isolation ◽  
Control Valve ◽  
Analytical Models ◽  
Design Parameters ◽  
Clear Understanding ◽  
Element Analysis ◽  
Worst Case ◽  
Control Valves

The magnetorheological control valve is a key element in magnetorheological dampers to achieve controllable damping characteristics in practice. The optimal design of magnetorheological control valves with an annular flow structure in two configurations of coil wire placements is investigated using a nondimensional analytical method. The achievable performances of the magnetorheological control valve are formulated in terms of several important nondimensional design parameters, which are defined based on the analytical models considering both mechanical flow characteristics and magnetic flux conservation in magnetorheological fluids and valve materials with a clear understanding and convenient specification in optimization. The design method first identifies a few optimal internal parameters through maximizing a single-objective function with predefined constraints. This can avoid empirical difficulty or uncertainty in weight selection in conventional multiobjective optimization methods and guarantee the worst-case performance. Then, the inherent sensitivity of the achievable performance with respect to external parameters is analyzed to provide practical instructions for appropriate design of the magnetorheological control valve. Finally, the analytical optimal results are verified by a finite element analysis, and a comparison is conducted to illustrate the excellent performance of a vibration isolation system employing the optimally designed magnetorheological control valve.

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