Absorbed power as a method to evaluate the health risk of seated occupants exposed to vertical vibration

Rodean, Simona; Arghir, Mariana

doi:10.1002/pamm.200910047

Cited by 2 publications

(2 citation statements)

References 1 publication

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“…Not the acceleration, but both the force and velocity are measured at the contact points of the man-machine interface. Related to the lumped parameter model of the human body, the absorbed power is the energy dissipation at the dashpots which connect the different rigid bodies of the human body, whereas the elastic power is the power stored and released in the springs [7,8]. Pradko and Lee [6] stated that the combination of both the contact force and contact velocity is a better measure of vibrational comfort as it takes the actual amount of energy transferred to the body into account and it takes the interplay into consideration between the vibrating structure and the body in contact with it.…”

Section: Human Comfortmentioning

confidence: 99%

Sensor design for outdoor racing bicycle field testing for human vibration comfort evaluation

Vanwalleghem¹,

Baere²,

Loccufier³

et al. 2013

Meas. Sci. Technol.

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This paper is concerned with the vibrational comfort evaluation of the cyclist when cycling a rough surface. Outdoor comfort tests have so far only been done through instrumenting the bicycle with accelerometers. This work instruments a racing bicycle with custom-made contact force sensors and velocity sensors to acquire human comfort through the absorbed power method. Comfort evaluation is assessed at the hand–arm and seat interface of the cyclist with the bicycle. By means of careful finite-element analysis for designing the force gauges at the handlebar and the seat combined with precise calibration of both force and velocity sensors, all sensors have proven to work properly. Initial field tests are focused on the proper functioning of the designed sensors and their suitability for vibration comfort measurements. Tests on a cobblestone road reveal that the outcome of the absorbed power values is within the same range as those from laboratory tests found in the literature. This sensor design approach for outdoor testing with racing bicycles may give a new interpretation on evaluating the cyclist's comfort since the vibrational load is not only quantified in terms of acceleration but also in terms of force and velocity at the bicycle–cyclist contact points.

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Section: Human Comfortmentioning

confidence: 99%

Sensor design for outdoor racing bicycle field testing for human vibration comfort evaluation

Vanwalleghem¹,

Baere²,

Loccufier³

et al. 2013

Meas. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Griffin [26] stated that there is currently no evidence to suggest a measure that is more accurate than VDV. Total absorbed power [30] and total daily acceleration dose [31] also adopt a cumulative operator as the main vibration information integration logic. Total absorbed power does not need frequency weightings because it is energy-based.…”

Section: Introductionmentioning

confidence: 99%

Evaluation of passenger comfort with road field test multi-axis vibration

Xu¹,

Chen²,

Liang³

et al. 2020

J. vibroeng.

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Using objective vibration evaluation to produce results highly consistent with real road ride comfort is challenging. The deficiencies in traditional evaluation indices, adopting an average operator, maximum operator, or cumulative operator as the main vibration information integration logic, are reported here through 19 designed road field tests in which major vibration information distribution covers all axes and vibration information is distributed in spacetime in various patterns. A new evaluation index which adopted a combination of maximum and cumulative operator is proposed to overcome these deficiencies and an interactive mechanism which standardized the process of selecting vibration information distributed among axes and spacetime is devised between the localized major vibrations. The results show that the proposed road ride comfort evaluation index is more consistent and accurate than the evaluation indices proposed by ISO 2631-1 and can be used more generally.

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Absorbed power as a method to evaluate the health risk of seated occupants exposed to vertical vibration

Cited by 2 publications

References 1 publication

Sensor design for outdoor racing bicycle field testing for human vibration comfort evaluation

Sensor design for outdoor racing bicycle field testing for human vibration comfort evaluation

Evaluation of passenger comfort with road field test multi-axis vibration

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