Contact pressure distribution at hand-handle interface: role of hand forces and handle size

被引:102
作者
Aldien, Y
Welcome, D
Rakheja, S
Dong, R
Boileau, PE
机构
[1] Concordia Univ, CONCAVE Res Ctr, Dept Mech Engn, Montreal, PQ H3G 1M8, Canada
[2] NIOSH, Engn & Control Technol Branch, Morgantown, WV 26505 USA
[3] Inst Rech Robert Sauve Sante & Secur Travail, Montreal, PQ H3A 3C2, Canada
关键词
hand-handle interface pressure distribution; high-pressure zones; pressure pain and discomfort; hand-handle contact force; hand-tools; estimation of peak pressure; handle size; grip and push forces;
D O I
10.1016/j.ergon.2004.09.005
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
The distribution of localized pressure peaks and the resulting contact forces over the hand surface are investigated through measurements performed under applications of different combinations of hand grip and push forces in the 0-75 N range. Three different cylindrical handles of 30, 40 and 48 mm are used to measure the hand-induced forces and distributed pressures using a capacitive pressure-sensing mat wrapped around the handle. The data acquired with 10 adult male subjects are analyzed to derive the contact force distributions over the hand surface as functions of the grip and push forces, and the handle size. The peak pressures occurring in different regions of the hand surface are also derived and examined in view of the reported pressure-discomfort and pressure-pain threshold limits. For this purpose, the hand surface is split into five different zones. The results show that contact pressures of considerable magnitudes develop within the hand-handle interface, while the magnitudes of peak pressures strongly depend upon the handle size, grip and push forces. Application of high grip and push forces causes the peak pressures to exceed the discomfort threshold values, specifically for the thenar eminence. The peak pressures attained for the 48 mm handle under moderate levels of grip and push forces exceed the suggested sustained pressure values for the preservation of working efficiency. The results also suggest that the mean peak interface pressure for a given handle size can be expressed as a linear combination of grip and push forces. Furthermore, the proportions of hand-handle contact force developed within individual zones also vary linearly with grip and push forces, and strongly depend upon the handle size. The results show that the contact force developed in the vicinity of proximal phalanges of the digits and the palm is generally attributed to the push force, while forces at the fingers surface are caused by the gripping action. Owing to the difficulties associated with the measurement of interface pressures, the proposed relationships could be conveniently applied to obtain an estimate of the mean values of peak pressures on the basis of directly measurable grip and push forces.
引用
收藏
页码:267 / 286
页数:20
相关论文
共 21 条
  • [1] *EUR COMM STAND, 1994, EN420 EUR COMM STAN
  • [2] ERGONOMICS EVALUATION OF A FOAM RUBBER GRIP FOR TOOL HANDLES
    FELLOWS, GL
    FREIVALDS, A
    [J]. APPLIED ERGONOMICS, 1991, 22 (04) : 225 - 230
  • [3] HAND STRENGTH - THE INFLUENCE OF GRIP SPAN AND GRIP TYPE
    FRANSSON, C
    WINKEL, J
    [J]. ERGONOMICS, 1991, 34 (07) : 881 - 892
  • [4] SENSITIVITY OF THE HAND TO SURFACE PRESSURE
    FRANSSONHALL, C
    KILBOM, A
    [J]. APPLIED ERGONOMICS, 1993, 24 (03) : 181 - 189
  • [5] A STUDY OF HAND GRIP PRESSURE DISTRIBUTION AND EMG OF FINGER FLEXOR MUSCLES UNDER DYNAMIC LOADS
    GURRAM, R
    RAKHEJA, S
    GOUW, GJ
    [J]. ERGONOMICS, 1995, 38 (04) : 684 - 699
  • [6] EFFECTS OF GRIP AND PUSH FORCES ON THE ACUTE RESPONSE OF THE HAND-ARM SYSTEM UNDER VIBRATING CONDITIONS
    HARTUNG, E
    DUPUIS, H
    SCHEFFER, M
    [J]. INTERNATIONAL ARCHIVES OF OCCUPATIONAL AND ENVIRONMENTAL HEALTH, 1993, 64 (06) : 463 - 467
  • [7] *ISO, 2001, ISO53491 INT ORG STA
  • [8] *ISO WD, 2000, 15230 ISOWD ISOTC
  • [9] TRANSMISSION OF HORIZONTAL SINUS VIBRATIONS TO UPPER EXTREMITIES IN SEMIPRONE POSITION AND REACTION OF M BICEPS
    IWATA, H
    DUPUIS, H
    HARTUNG, E
    [J]. INTERNATIONALES ARCHIV FUR ARBEITSMEDIZIN, 1972, 30 (04): : 313 - 328
  • [10] Perception of surface pressure applied to the hand
    Johansson, L
    Kjellberg, A
    Kilbom, Å
    Hägg, GM
    [J]. ERGONOMICS, 1999, 42 (10) : 1274 - 1282