Abstract
Electronic equipment’s system is always manufactured as a superprecision system. However, it will be used in harsh environment. For example, the computer in moving vehicles will be acted by vibrations. The objective of this paper is to provide a systematic investigation to test and computer-aided design of the vibration isolator for protection of electronic equipment’s system in harsh vibration environment. A micro-oil damping vibration isolator is designed and manufactured through coupling the oil and spring by ingenious tactics. The structure of the oil damping vibration isolator can achieve circulating oil damping function with an inner tube and an outer tube (some orifices are manufactured on upside and underside of the inner tube). The dynamics of the key model machine is systematically investigated. Based on the test, a nonlinear dynamic model for the vibration isolator is presented by analyzing the internal fluid dynamic phenomenon with respect to the vibration isolator. The model considers all the physical parameters of the structure. Comparisons with experimental data confirm the validity of the model. In the other, the model is integrated by introducing normalization measure. The normalization model shows the actual physical characteristics of the oil damping vibration isolator by considering quadratic damping, viscous damping, Coulomb damping, and nonlinear spring forces. An approximate solution is deduced by introducing harmonic transform method and Fourier transform method. Therefore, a parameter-matching optimal model for computer-aided design of the vibration isolator is build based on approximate solution. An example confirms the validity of the computer-aided design integration.
Similar content being viewed by others
References
Cronje JM, Hevns PS, Theron N, Loveday PW (2005) Development of a variable stiffness and damping tunable vibration isolator. J Vib Control 11(3):381–396
Du Ploov HF, Hevns PS, Brennan MJ (2005) The development of a tunable vibration absorbing isolator. Int J Mech Sci 47(7):983–997
Du Y, Burdisso, RA (2003) Passive and hybrid control of isolator’s internal resonances to improve their vibration and noise isolation performance. Proceedings of the Tenth International Congress on Sound and Vibration, pp 813–820.
Kaul S, Dhingra AK, Hunter TG (2005) Two approaches for optimum design of motorcycle engine mount systems. Eng Optim 37(3):307–324
Leon SL (2002) Optimization theory for large systems. Dover, New York
Narimani A, Golnaraghi MF, Jazar GH (2004) Frequency response of a piecewise linear vibration isolator. J Vib Control 10(12):1775–1794
Ryaboy VM (2005) Vibration control systems for sensitive equipment: limiting performance and optimal design. Shock Vib 12(1):37–47
Yang P. (2001) Research on design, modelling, simulation and testing of nonlinear coupling shock absorber. Ph.D dissertation. Huazhong University of Science and Technology. (In Chinese)
Yang P (2003) Experimental and mathematical evaluation for dynamic behavior of an oil-air coupling shock absorber. Mech Syst Signal Process 17(6):1367–1379
Yang P (2005) Numerical characteristics analysis of multi-medium coupling vibration isolator. J Mech Eng 56(5):289–305
Yang P (2006) Approximate solution of a multi-medium coupling nonlinear isolator under random vibration excitation. Engineering Mechanics 23(7):170–175 (In Chinese)
Yang BS, Choi SP, Kim YC (2005) Vibration reduction optimum design of a steam-turbine rotor-bearing system using a hybrid genetic algorithm. Struct Multidiscipl Optim 30(1):43–53
Yang P, Tan Y, Yang J et al. (2006) Measurement, simulation on dynamic characteristics of a wire gauze-fluid damping shock absorber. Mech Syst Signal Process 20(3):745–756
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Yang, P., Liu, F., Liu, Y. et al. Computer-aided design integration of a reinforced vibration isolator for electronic equipment’s system basedon experimental investigation. Struct Multidisc Optim 35, 489–498 (2008). https://doi.org/10.1007/s00158-007-0154-y
Received:
Revised:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s00158-007-0154-y