Effect of handle size and hand–handle contact force on the biodynamic response of the hand–arm system under zh-axis vibration

Marcotte, Pierre; Aldien, Y.; Boileau, P.-É.; Rakheja, Subhash; Boutin, Jérôme

doi:10.1016/j.jsv.2004.06.007

Cited by 77 publications

(84 citation statements)

References 9 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…With the addition of the finger MI, the total MI of the entire hand-arm system will likely further exceed the ISO limit. This observation is consistent with the data reported from several other studies 19,21,29) . This may be due in part to the fact that the ISO-recommended values are based on data measured with the grip action in a fairly low force range (25-50 N) 22) .…”

Section: Discussionsupporting

confidence: 94%

“…Furthermore, the BR can also be used to estimate the effectiveness of anti-vibration gloves [12][13] . Probably for these reasons, the biodynamic responses of the human hand-arm system have been extensively studied, and a considerable number of publications can be found in the literature [14][15][16][17][18][19][20][21] . More references can be found in the reviews by Gurram et al 22) and Dong et al 23) .…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Biodynamic Response at the Palm of the Human Hand Subjected to a Random Vibration

Dong¹,

McDowell²,

Welcome³

2005

Ind Health

View full text Add to dashboard Cite

This study investigated the biodynamic response (BR) distributed at the palm of the hand subjected to a random vibration. Twelve male subjects were used in the experiment. Each subject applied three coupling actions (grip-only, push-only, and combined grip and push) on a simulated tool handle at three different levels (50, 75, and 100 N) of palm force. This study found that the hand-arm system resonated mostly in the frequency range of 20 to 50 Hz, depending on the specific test treatment and individual characteristics. The maximum vibration power transmission through the palm occurred at the resonant frequency. Increasing the effective palm force generally increased the BR magnitude and resonant frequency. The apparent stiffness measured at the middle frequencies (80-100 Hz) is correlated to the BR in almost the entire frequency range (20-1,000 Hz). Under the same palm force, the push-only action corresponded to the highest BR values while the grip-only action generally produced the lowest values. Since the resonant frequency range matches the dominant vibration frequency range of many percussive tools, it is anticipated that the palm BR and vibration power transmission may have an association with vibration-induced injuries or disorders in the wrist-arm system among the workers using these tools.

show abstract

Section: Discussionsupporting

confidence: 94%

Section: Introductionmentioning

confidence: 99%

Biodynamic Response at the Palm of the Human Hand Subjected to a Random Vibration

Dong¹,

McDowell²,

Welcome³

2005

Ind Health

View full text Add to dashboard Cite

show abstract

“…There are considerable differences among reported data 1,62) . Some of them may be caused from the multitudes of vibration excitations, vibration magnitudes, applied forces, hand and arm postures, handle shapes and dimensions, and individual differences 12,13,47,[63][64][65][66][67][68][69][70] . However, the data measured under similar experimental conditions also show significant differences not only in magnitude but also in trend 1,62) .…”

Section: Major Problems and Improvements Of Measurement Methodsmentioning

confidence: 99%

“…Hence, they can be modeled as a spring-damping system and the remaining structures of the palm-wrist-arm system as a massspring-damping system that is connected to the palm model. Both the driving-point response data 13,47,67,70) and the vibration transmissibility data 53,54,71) indicate that the resonance of the system in the z h -direction 7) (along the forearm direction) is usually in the range of 16 to 63 Hz, depending the applied force and hand and arm postures. This resonant feature supports the proposed palm theoretical model 49) .…”

Section: Major Problems and Improvements Of Measurement Methodsmentioning

confidence: 99%

See 1 more Smart Citation

Recent Advances in Biodynamics of Human Hand-Arm System

Dong

Welcome

2005

INDUSTRIAL HEALTH

View full text Add to dashboard Cite

The biodynamics of human hand-arm system is one of the most important foundations for the measurement, evaluation, and risk assessment of hand-transmitted vibration (HTV) exposure. This paper presents a new conceptual model relating factors influencing cause-effect relationships for HTV exposure, a new study strategy, and a comprehensive review of the recent advances in the biodynamics closely associated with HTV exposure. The review covers the following five aspects: theoretical modeling of biodynamic responses, vibration transmissibility, driving-point biodynamic responses, evaluation of anti-vibration gloves, and applied forces. This review finds that some significant advances in each of these aspects have been achieved in the recent years. Several important issues and problems in the biodynamic measurement have been identified and resolved, which has significantly helped improve the reliability and accuracy of the experimental data. The results reported in recent years suggest that, from the point of view of biodynamics, the frequency weighting specified in ISO 5349-1 (2001) overestimates the low frequency effect but underestimates the high frequency effect on the fingers and hand. The major problems, issues, and topics for further studies are also outlined in this paper. It is anticipated that the further studies of the biodynamics of the system will eventually lead to establishment of a robust vibration exposure theory. Although this review focuses on the biodynamics of the hand-arm system, the fundamental concepts and some methodologies reviewed in this paper may also be applicable for the study of whole-body vibration exposure.

show abstract

Experimental Investigation To Study the Influence of Handle Diameter on Low‐Frequency, Hand–Arm Vertical Vibration

Alphin

Sankaranarayanasamy

Sivapirakasam

2011

Hum Ftrs & Erg Mfg Svc

View full text Add to dashboard Cite

Handle vibration from equipment or machines influences musculoskeletal activity as well as comfort in handling the same. New technology can be worse than no technology if it was not developed correctly as ergonomic research has clearly demonstrated the relationship between injury risk and poorly designed hand tools. Clinical and epidemiological studies have shown that operators of handheld power tools are prone to develop various vibration‐induced disorders of the hand and arm, which are collectively referred to as “hand–arm vibration syndrome.'' The vibration direction has a great influence on the transmitted vibration. The present study focuses the effects of low‐frequency vertical vibration on hand to shoulder from handles of different size. The electrodynamic exciter is used for simulating vibration to a vertical handles of four different diameters. PULSE LabShop software is used for evaluating the magnitude of vibration in different frequency bands. The vibration characteristic data were acquired in the yh axis at the wrist, elbow, and shoulder for bent arm and extended arm postures with vibration excitation of 4.5 m/s2. Transmissibility characteristics are computed to determine the influence of handle diameter in yh vibration transmitted to the hand–arm system. The magnitude of vibration transmitted within the hand, elbow, and shoulder was observed to be dependent on the handle size; larger handles cause higher vibration transmissibility. The results also show that the human hand–arm system in an extended arm posture amplifies the vibration transmitted than bent arm in a small difference. © 2011 Wiley Periodicals, Inc.

show abstract

Effect of handle size and hand–handle contact force on the biodynamic response of the hand–arm system under zh-axis vibration

Cited by 77 publications

References 9 publications

Biodynamic Response at the Palm of the Human Hand Subjected to a Random Vibration

Biodynamic Response at the Palm of the Human Hand Subjected to a Random Vibration

Recent Advances in Biodynamics of Human Hand-Arm System

Experimental Investigation To Study the Influence of Handle Diameter on Low‐Frequency, Hand–Arm Vertical Vibration

Contact Info

Product

Resources

About