Various methods for evaluating ride quality in automobiles are investigated by means of a field study involving two different automobiles, seventy-eight different passengers, and eighteen different roadway sections. Passenger rating panels were used to obtain subjective evaluation of the various rides, and measured vibration spectra were compared on the basis of various evaluation techniques to...

With the development of Steel Truss Corridor (STC) toward long-span and gentle development, human-induced vibration often causes large lateral problems time-delay effects STC, which will have a non-negligible impact on dynamic performance STC. In this paper, parametric model proposed by Piccardo is improved, nonlinear equation STC established considering longitudinal–lateral walking force coupl...

It has been suggested that a suppression of maximal voluntary contraction (MVC) induced by prolonged vibration is due to an attenuation of Ia afferent activity. The purpose of the present study was to test the hypothesis that aftereffects following prolonged vibration on muscle activity during MVC differ among plantar flexor synergists owing to a supposed difference in muscle fiber composition....

A power transmission system driven by a Cardan shaft may experience severe vibration due to fluctuating rotational speed and moments transferred the final drives, determined level of angular misalignment phasing joint yokes. This study investigates potential an out-of-phase position displaced phase angle in attenuating vibrations. The governing equations representing dynamics are derived. torsi...

Understanding how vibration affects discomfort is an important factor for improving work and travelling experience. Methods of evaluating health effects from whole-body vibration are closely linked to those for evaluating discomfort in ISO 2631-1. The standard includes a method to evaluate discomfort using twelve axes of vibration with a similar approach to that for evaluating health effects; t...

Understanding how vibration affects discomfort is an important factor for improving work and travelling experience. Methods of evaluating health effects from whole-body vibration are closely linked to those for evaluating discomfort in ISO 2631-1. The standard includes a method to evaluate discomfort using twelve axes of vibration with a similar approach to that for evaluating health effects; t...

Lateral constriction (transverse elastic constraint) of rod controls its apparent (longitudinal) stiffness and can even make it negative. (The total energy system + device remains positive.) The depends upon moduli the material modulus relating lateral normal stress strain components. Apparent negative arrest wave propagation along rod. This opens a way to design hybrid materials consisting sti...

The paper aims to extract the dynamic properties of existing structures without utilizing the analytical models. The ambient vibration testing could be used on any type of frame such as concrete, steel and masonry to investigate the structural vulnerability. The method could be the first stage and necessarily for the retrofit process. To achieve this aim, the ambient vibration testing can...

Structural vibration control is one of the most important features in structural engineering. Real-time information about seismic resultant forces is required for deciding module of intelligent control systems. Evaluation of lateral forces during an earthquake is a complicated problem considering uncertainties of gravity loads amount and distribution and earthquake characteristics. An artificia...

The importance of bridge health monitoring and management has been recognized by authorities of long-span bridges throughout the world in recent years. The GeoSHM consortium, led by the University of Nottingham, was awarded a Feasibility Study (FS) grant in 2013 by the European Space Agency (ESA) to investigate how to use integrated GNSS and Earth Observation technologies for the structural hea...