A Procedure for Developing a Vibration Test Method for Specific Categories of Industrial Trucks

Donati, Patrice

doi:10.1006/jsvi.1998.1599

Cited by 17 publications

(7 citation statements)

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“…The signal was found to be in the order of 40 times greater than the noise. Seat pan measurements depend on a driver's dynamics, especially his/her weight and seat adjustments [12]. Care was taken to ensure that each subject was exposed to the same acceleration levels during testing.…”

Section: Preliminary Calibrationsmentioning

confidence: 99%

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The effects of Posture on seat-to-head Whole-Body Vibration Transmission

Jack

Eger

2008

Journal of Low Frequency Noise, Vibration and Active Control

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Five male subjects were exposed to root-mean-square whole-body vibration (WBV) acceleration levels ranging from 0.011m/s 2 to 0.615m/s 2 while seated on a vibration simulator. During the WBV exposure, subjects adopted 5 unsupported trunk flexion/extension positions (15, 10, 0, -10 and -15, ±2.5 degrees from vertical), and 4 hip flexion positions (-10, 0, 10, and 20 degrees from the horizontal). WBV measurements were taken with a tri-axial accelerometer at the buttock/seat interface and the head. Hydrostatic weighing was also conducted to determine the subject's adipose content. Adipose content of the individual had no significant relationship with the seat-to-head transmission of vibration. Vibration exposures at 4Hz had significantly more transmission than vibration exposures at 6.3Hz. Vibration exposures in the Zaxis (vertical) had significantly more vibration transmission than vibration exposures in the X-(front-to-back) and Y-axes (left-to-right). A significant interaction was also found between trunk position, frequency and axis of exposure.

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Section: Preliminary Calibrationsmentioning

confidence: 99%

“…It has been found through epidemiological studies that exposure to WBV combined with poor posture increases the risk of lower back disorders [12]. Research has also found that having a bent or twisted trunk while exposed to WBV increased the risk of low back and neck problems [5,6,13,32,35,38].…”

Section: Introductionmentioning

confidence: 99%

The effects of Posture on seat-to-head Whole-Body Vibration Transmission

Jack

Eger

2008

Journal of Low Frequency Noise, Vibration and Active Control

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“…side-to-side axes [3][4][5][6][7] . Table 1 lists examples of the frequency-weighted rms accelerations (a wx , a wy and a wz ) due to vibration transmitted along the fore-aft (x-), side-to-side or lateral (y-) and vertical (z-) axes of various industrial and heavy road vehicles, derived on the basis of W d -and W k -weighting filters defined in ISO 2631-1 8) .…”

mentioning

confidence: 99%

Energy Absorption of Seated Occupants Exposed to Horizontal Vibration and Role of Back Support Condition

Rakheja¹,

Mandapuram²,

Dong

2008

Ind Health

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Occupational off road vehicle drivers are exposed to considerable magnitudes of whole-body vibration (WBV), which is known to cause discomfort, annoyance, and several health and safety risks. Many studies have suggested strong association between the exposure to WBV and low back pain 1,2) . The vast majority of the studies on human responses to vibration have emphasized the exposure to vertical WBV, since heavy on-road and off-road vehicles are believed to transmit relatively higher magnitudes of vertical vibration than those along the other axes. Such vehicles, however, also transmit substantial magnitudes of horizontal vibration (HV) along the fore-aft and

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“…Subject to a v < 1:0; 0:7 Á k i 6 k i 6 1:3 Á k i ; i ¼ 1; 2; ::; n: ð55Þ In some sense, optimization of ride comfort for the special tractor is to find out the matching relationship of different parameters [21,22]. The design parameters mentioned previously are used to generate different configurations.…”

Section: Optimization Design Of Ride Comfort Based On Annoyance Rate mentioning

confidence: 99%

Study on ride comfort of tractor with tandem suspension based on multi-body system dynamics

Yang

Ren

Chen

et al. 2009

Applied Mathematical Modelling

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The aim of the paper is to report a systematic methodology which is used to evaluate and improve the ride comfort. An accurate model is necessary for further investigation and optimization. The vehicle dynamics model of tractor with tandem suspension is modeled and simulated in dynamics software ADAMS, which is redeveloped to add a function of automatic parametric modeling and simulation. The modeling methods of nonlinear characteristic components and various road excitation inputs, which can be simply seen as the implementation means for the model solution, are introduced. A new index called annoyance rate is presented to indicate the quantitative correlation between objective method and subjective comment. The quantitative correlation between them, which is quite different from the qualitative ''comfortable'' or ''uncomfortable'' results attained by objective evaluation, can be defined by function and regarded as a basis to scientifically evaluate and improve the ride comfort. According to the request of performance-based design, the parameter sensitive analysis and structure optimization have been carried out to find the trade-off among ride comfort, maneuverability and safety. The approach has proved to be very effective for predicting and improving the ride comfort by experiment results. The methodology can be also used for any other specific category of vehicle.

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A Procedure for Developing a Vibration Test Method for Specific Categories of Industrial Trucks

Cited by 17 publications

References 0 publications

The effects of Posture on seat-to-head Whole-Body Vibration Transmission

The effects of Posture on seat-to-head Whole-Body Vibration Transmission

Energy Absorption of Seated Occupants Exposed to Horizontal Vibration and Role of Back Support Condition

Study on ride comfort of tractor with tandem suspension based on multi-body system dynamics

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