Evaluation of the vibration attenuation properties of an air-inflated cushion with two different heavy machinery seats in multi-axis vibration environments including jolts

Ji, Xiaoxu; Eger, Tammy; Dickey, James P.

doi:10.1016/j.apergo.2016.06.011

Cited by 20 publications

(12 citation statements)

References 38 publications

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“…The published computational models are consistent with data collected in humans showing that the resonant frequency of the human body is between 5–10 Hz (Zeeman et al 2015; Matsumoto,Griffin 2002; Qiu,Griffin 2010; Basri,Griffin 2011), and that the resonant frequency of the human hand-arm system is between 100–300 Hz depending on the location of the measurement (Dong, Welcome, et al 2004; Dong, Welcome,Wu 2005; Dong et al 2006; Wu et al 2007; Wu et al 2008). These models, along with experimental data collected in human and animal subjects have helped predict how various interventions may reduce the transmission of vibration from a vehicle or tool to the body (Krajnak et al 2015; Hewitt et al 2015; Md Rezali,Griffin 2016; Welcome et al 2016; Md Rezali,Griffin 2017; Basri,Griffin 2014; Qiu,Griffin 2012; Jonsson et al 2015; Beard,Griffin 2013; Ji, Eger,Dickey 2017; Du et al 2018; Johnson et al 2018).…”

Section: Models For Assessing Health Effectsmentioning

confidence: 99%

“…Because many patients seen for back pain do not have injuries to their spine or disks, which are can be detected using imaging methods, understanding the contribution of soft tissue injury (i.e., skeletal muscle, tendons, ligaments) to the incidence of back pain is critical for identifying interventions that will prevent injuries (Du et al 2018; Bovenzi et al 2015; Bovenzi 2010; Palmer et al 2003; Bovenzi 1996; Bovenzi,Zadini 1992). Data collected in humans, have been used to alter seat design to reduce vibration transmission and improve comfort in vehicles (Qiu,Griffin 2012; Beard,Griffin 2013; Basri,Griffin 2014; Jonsson et al 2015; Ji, Eger,Dickey 2017; Du et al 2018; Johnson et al 2018). Mental fatigue and stress can also exacerbate pain, therefore, taking breaks to stretch and help maintain mental alertness may also improve pain perception (Yung et al 2017; Tachi et al 2004).…”

Section: Models For Assessing Health Effectsmentioning

confidence: 99%

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Health effects associated with occupational exposure to hand-arm or whole body vibration

Krajnak

2018

Journal of Toxicology and Environmental Health, Part B

108

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Workers in a number of different occupational sectors are exposed to workplace vibration on a daily basis. This exposure can come through use of powered-hand tools or hand-transmitted vibration (HTV). Workers can also be exposed to whole body vibration (WBV) by driving delivery vehicles, earth moving equipment, or through the use of tools that generate vibration at low dominant frequencies and high amplitudes, such as jack hammers. Occupational exposure to vibration has been associated with an increased risk of musculoskeletal pain in the back, neck, hands, shoulders and hips. It may also contribute to the development of peripheral and cardiovascular disorders and gastrointestinal problems. In addition, there are more recent data suggesting that occupational exposure to vibration may increase the risk of developing certain cancers. This paper provides a review of the occupations where exposure to vibration is most prevalent, and a description of the health effects associated with occupational exposure to vibration. The various experimental methods used to measure and describe the characteristics of vibration generated by various tools and vehicles, the etiology of vibration-induced disorders, and how these data have been used to assess and improve intervention strategies and equipment that reduces the transmission of vibration to the body. Finally, there is a discussion of the research gaps that need to be investigated to further reduce the incidence of vibration-induced illnesses and injuries.

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Section: Models For Assessing Health Effectsmentioning

confidence: 99%

Section: Models For Assessing Health Effectsmentioning

confidence: 99%

Health effects associated with occupational exposure to hand-arm or whole body vibration

Krajnak

2018

Journal of Toxicology and Environmental Health, Part B

108

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“…Some concern on the effects of WBV (acceleration frequencies ranging from 0.1 to 80 Hz) is reported in recent literature surveys, mainly on vehicle seats regarding passenger comfort. Works of Zhang et al (2015) and Ji et al (2017) and particularly (Nawayseh 2015) investigate the effect in transmissibility of vibration in heavy vehicles and cars by the foam and air in seat cushions. Sammonds et al 2017indicates that there is a current concern in the study of materials and solutions to mitigate passenger vibrations (referring to the effect of discomfort on drivers), especially when driving and exposed to long periods.…”

Section: Whole-body Vibration According To Iso 2631-1 (1997)mentioning

confidence: 99%

A novel multi-objective quantum particle swarm algorithm for suspension optimization

et al. 2020

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In this paper, a novel multi-objective archive-based Quantum Particle Optimizer (MOQPSO) is proposed for solving suspension optimization problems. The algorithm has been adapted from the well-known single objective QPSO by substantial modifications in the core equations and implementation of new multi-objective mechanisms. The novel algorithm MOQPSO and the long-established NSGA-II and COGA-II (Compressed-Objective Genetic Algorithm with Convergence Detection) are compared. Two situations are considered in this paper: a simple half-car suspension model and a bus suspension model. The numerical model of the bus allows complex dynamic interactions not considered in previous studies. The suitability of the solution is evaluated based on vibration-related ISO Standards, and the efficiency of the proposed algorithm is tested by dominance comparison. For a specifically chosen Pareto front solution found by MOQPSO in the second case, the passengers and driver accelerations attenuated about 50% and 33%, respectively, regarding non-optimal suspension parameters. All solutions found by NSGA-II are dominated by those found by MOQPSO, which presented a Pareto front noticeably wider for the same number of objective function calls.

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“…When the tires hit a hump or sink into a pothole, a shock occurs. If this shock is strong enough, it causes severe spinal injury (Bowrey, Thomas, Evans, & Richmond, 1996;Dupuis & Zerlett, 1986) and other harm (Ji, Eger, & Dickey, 2017;Patel & Vasudevan, 2016). Also among many categories involved, professional drivers are one of the most exposed groups, as exposure time may last for the working period.…”

Section: Introduction and Literature Reviewmentioning

confidence: 99%

Analysis and Evaluation of Trapezoidal Speed Humps and Their Impact on the Driver

Jasiūnienė¹,

Pociūtė²,

Vaitkus³

et al. 2018

BJRBE

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Abstract.Operating speed is one of the leading safety risk factors, which increases accident risk and influences accident severity. Speeding is the leading cause of accidents and the most common road traffic offense. The key measures of speed control are educational activities and engineering traffic calming measures. This paper presents an investigation of trapezoidal speed humps -one of the traffic calming measures -and their impact on the driver and the occupants of the vehicle. The level of discomfort to the driver and the occupants, caused by vibrations when the vehicle passes the speed hump, was determined during experimental research. The discomfort level, calculated by three methods, indicated the leading cause of discomfort generated by the analysed trapezoidal speed humps.

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Evaluation of the vibration attenuation properties of an air-inflated cushion with two different heavy machinery seats in multi-axis vibration environments including jolts

Cited by 20 publications

References 38 publications

Health effects associated with occupational exposure to hand-arm or whole body vibration

Health effects associated with occupational exposure to hand-arm or whole body vibration

A novel multi-objective quantum particle swarm algorithm for suspension optimization

Analysis and Evaluation of Trapezoidal Speed Humps and Their Impact on the Driver

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