Using passive techniques for vibration damping in mechanical systems

Abstract

This paper examines two passive techniques for vibration reduction in mechanical systems: the first one is based on dynamic vibration absorbers (DVAs) and the second uses resonant circuit shunted (RCS) piezoceramics. Genetic algorithms are used to determine the optimal design parameters with respect to performance indexes, which are associated with the dynamical behavior of the system over selected frequency bands. The calculation of the frequency response functions (FRFs) of the composite structure (primary system + DVAs) is performed through a substructure coupling technique. A modal technique is used to determine the frequency response function of the structure containing shunted piezoceramics which are bonded to the primary structure. The use of both techniques simultaneously on the same structure is investigated. The methodology developed is illustrated by numerical applications in which the primary structure is represented by simple Euler-Bernoulli beams. However, the design aspects of vibration control devices presented in this paper can be extended to more complex structures

Multimodal vibration damping through piezoelectric patches and optimal resonant shunt circuits

“…Steffen and Inman (1999) use control techniques and optimization strategies in the design of both active and passive vibration reduction devices, using piezoelectric materials. Steffen et al (2000) examine the use of passive techniques for vibration reduction combining dynamic vibration absorbers (DVAs) and piezoelectric patches coupled to resonant shunt circuits. In that work, natural optimization techniques were used in the design of the damping system.…”

“…Details about GA are provided by Michalewicz (1994) and Haupt and Haupt (1998), while PSO is comprehensively presented by Kennedy and Eberhart (1995) and Venter and Sobieski (2002).…”

Self-Tuning Multimodal Piezoelectric Shunt Damping

“…In this work the design of a lossless network is assumed to simplify the synthesis procedure. The optimization of shunt parameters is an important research problem and is treated in detail by Steffen and Inman (1999) and Steffen et al (2000).…”

Dynamic Balance of the Head in a Flexible Legged Robot for Efficient Biped Locomotion

“…Indeed, vibration damping [24] is a common problem for several engineering fields, e.g., civil [25,26], automotive [27,28], aerospace [29], and tooling machines [28]. Vibrations are usually reduced through active devices and control strategy [30][31][32] or passive damping [33,34]. In robotics, the vibration damping is studied for increasing the bipedal or quadrupedal performance of robots, as shown in [2,13,35,36].…”