Passive vibration control

Mead, D. J. (1999). Passive vibration control. Chichester, UK Wiley. 

Passive vibration control has its limitations such as lack of versatility, large size and weight when used for low-frequency vibration control, and detuning of tuned treatments. 

Semi-Active (Adaptive-Passive) Systems Refer to an adjustable passive vibration control scheme, that is, the passive treatment can adjust itself in response to changes in the structure. For example, the stiflfiiess, damping coefficient or other variables of the passive control scheme can change automatically so that optimal vibration mitigation is induced. These variable components, also known as tunable parameters of the control system, are re-tailored via a properly developed semi-active control algorithm. Being more versatile than passive control techniques and more affordable (in terms of cost and energy consumption) than active control schemes, has made semi-active control methods very popular. 

Multiple Tuned Mass Dampers (MTMD) A passive vibration control device which is composed by multiple TMDs arranged in parallel. 

Kagawa, K., Yoshimura, Y, Fujita, K., Yamasaki, Y, Ayabe, S. (1994). Semi-active and passive vibration control of structure by fluid system. Active a t/7 a5 5 /ve Control ofMechanical Vibration, 289, 41-48, New York, NY ASME.. 

Mead, D. X Passive Vibration Control, John Wiley Sons, Chichester, UK, 1988. 

Ellison, J., Ahmadi, G., and Grodsinsky, C. (1997). Stochastic Response of Passive Vibration Control Systems to g-jitter Excitation. Microgr. Sci. Technol., Vol. 10, pp. 2-12. 

Marian L, Giaralis A (2014) Optimal design of a novel tuned mass-damper-inerlCT (TMDI) passive vibration control crmiiguration fin stochastically support-excited stmctirral systems. Prob Eng Mech. http //www.sciencedirect.c(mi/sdtmce/attid pii/S02668 92014000216... 

Mead DJ (1998) Passive vibration controL Wiley, Chichester... 

Diacenco AA. Finite element modeling of structural composites incorporating viscoelastic material for passive vibration control and noise. Master of Science Thesis, Itajuba, Brazil Universidade Federal de Itajuba 2010. p. 81 [in Portuguese]. 

Innovative seismic control systems belongs to the world of the vibration control techniques of structures, which includes passive, semi-active, active and hybrid systems (Housner et al., 1997 Spencer, 2003 Christopoulos and Filiatrault, 2007). The experiences acquired during experimental activities and worldwide apvplications have indicated the passive control techniques as the most suitable solutions for the seismic protection of structures. These systems modify the stiffness and/or the dissipative properties of the structure, favoring the reduction of the dynamic response to seismic actions. They can be classified on the basis of... 

Ver, Istvan L., and Leo L. Beranek, eds. Noise and Vibration Control En neering Principles and AppUcor tions. 2d ed. Hoboken, N.J. John Wiley Sons, 2006. Details sound absorption, passive silencers, enclosures, vibration isolation and damping, machinery and heating, ventilation, and air-conditioning (HVAC) noise control, and active noise suppression. 

A Tuned Mass Damper (TMD) is one of the simplest and the most rehable passive device for vibration control in a wide range of applications, and for this reason many optimization criteria have been proposed for this specific device. Essentially, a TMD consists in an additional mass connected to a main system by a spring and a damper. The main system, excited by a base acceleration, is modelled as a stochastic stationary coloured noise and introducing the global space state vector ... 

Most automotive R D projects within adaptronics are concerned with active vibration control (AVC) and active structural acoustic control (ASAC) for optimization of NVH (noise, vibration and harshness) characteristics and even soimd design. Furthermore, active measmes to increase the passive safety of vehicles are being developed. Shape and position control as well as structmal health monitoring (SHM) are stiU of secondary importance. 

Within the respective subproject a step-by-step procedure has been chosen. After analysing the passive structure the position of piezoceramic patch actuators were numerically optimized (Fig. 8.26) and attached to the roof. First results showed that the available actuators were not capable of sufficiently exciting the roof structure to counteract the passive vibrations - today wide range optimized patch actuators are commercially available. To compensate the insufficient actuator performance and further validate the ASAC approach electrodynamic actuators were applied to the roof. Different controllers have been tested and an active broadband structural control was successfully proven (Fig. 8.26). 

Soong, T. T, Constantinou, M. C. (1994). Passive and active structural vibration control in civil engineering. New York, NY Springer. 

Fukushima, I., Kobori, T, Sakamoto, M., Koshika, N.,Nishimura, I., Sasaki, K. (1996, September). Vibration control of a tall building using active-passive composite tuned mass damper. Paper presented atthe Third International Conference on Motion and Vibration Control, 1-6, Chiba, Japan. 

The implementation of active, semi-active, and hybrid control strategies is expected to increase, even though passive vibration... 

Marano GC, Quaranta G, Avakian J, Pahneri A (2013) Identification of passive devices for vibration control by evolutionary algorithms, Ch. 15. In Gandomi AH, Yang X-S, Marand ST, Alavi AH (eds) Metaheuristic applications in structures and infrastructures. Elsevier,... 

There are different types of devices, which serve as passive TMDs conventional TMD, liquid TMD (TLD) (Di Matteo et al. 2014 and references therein), and parametric pendulum TMD (PPD). An excellent review paper by Ibrahim (Ibrahim 2008) provides a full description of various passive vibration isolators. It has been argued that the passive TMDs are effective means of mitigating buildings vibrations due to seismic loading. It became a motivation for the development of a theory of active and hybrid TMDs (Soong and Spencer 2002), which use different types of control to enhance the effectiveness of dampers (Wang and Lin 2007). 

Fu siunmarized the limitations of the previous models and developed a 3-D transient, mathematical thermal model for the elothed hiunan to simulate the elothed human thermal response imder different situations. The main improvement of this model is the addition of the subeutane-ous fat layer, the accumulation of moisture on the skin, and the blood perfusion and blood pressure to Smith s model. The development of the hiunan model ineludes the thermal governing equations of the passive and control systems. Fu s 3-D transient model has a good ability of simulating the human body thermoregulatory system in situations where there exists high temperature vibration and even in the extremely atrocious weather conditions. 

Fig. 6. Raman spectra of localized vibrations due to nB and 10B in Si before (control) and after passivation by hydrogen or deuterium. [ Reprinted with permission from The Materials Research Society, Stutzmann, M. and Herrero, C.P. (1988). Defects in Electronic Materials, MRS Proceedings 104 (eds. M. Stavola, S.J. Pearson and G. Davies), p. 271. Also from Stutzmann and Herrero, 1988. And with permission from The American Physical Society, Herrero, C.P. and Stutzmann, M. (1988). Phys. Rev. B 38, 12668.]...

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