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A general lifting equation based on total mechanical work

SONBOL, AMR M
http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085759536

Abstract Details

2004, MS, University of Cincinnati, Engineering : Industrial Engineering.
Objective: The objective of this thesis is to develop a total mechanical lifting equation based on the laws of physics, from which a Recommended Weight Limit and Load Index may be developed.Background: The NIOSH equation is an empirical equation that is based on expert opinions from the biomechanical, physiological, and psychophysical fields. Applying the NIOSH lifting equation can take place under ideal or non-ideal conditions. Under the ideal conditions the load to be lifted is 51 lbs, whereas the non-ideal conditions will cause stresses on the body resulting in reduction of the load lifted. Both ideal and non-ideal conditions are governed by, H (distance from the spine), A (rotation about the spine), V (original height of lift), and D (vertical lifting distance). Methods: Based on the ideal and non-ideal conditions set by the NIOSH; the laws of physics are used to derive mechanical equations under ideal and non-ideal conditions. The equations derived accounted for the changes in H, D, A and V. These changes would cause moments that produce stress on the body, specifically the spine. This stress was denoted by stress coefficients that are calculated using the NIOSH coefficients. Results: The results showed that, by applying the new general lifting equation sensitivity can be observed primarily to both the changes in D and H. Whereas the NIOSH equation showed sensitivity to mainly the H, and showed minimal sensitivity to D. Changes in A and V in both equations showed a lesser effect. Conclusions: The primary finding suggests an improvement in the General Lifting Equation versus the NIOSH equation because it accounts for more factors than the NIOSH equation. It also gives credit to the NIOSH for developing an empirical model that predicts the lifting load limits that is similar in manner to the new General Lifting Equation.
Dr. Richard Shell (Advisor)
28 p.
general lifting equation; recommended weight limit; manual lifting; total mechanical work; energy expenditure

Recommended Citations

Citations

  • SONBOL, A. M. (2004). A general lifting equation based on total mechanical work [Master's thesis, University of Cincinnati]. OhioLINK Electronic Theses and Dissertations Center. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085759536

    APA Style (7th edition)

  • SONBOL, AMR. A general lifting equation based on total mechanical work. 2004. University of Cincinnati, Master's thesis. OhioLINK Electronic Theses and Dissertations Center, http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085759536.

    MLA Style (8th edition)

  • SONBOL, AMR. "A general lifting equation based on total mechanical work." Master's thesis, University of Cincinnati, 2004. http://rave.ohiolink.edu/etdc/view?acc_num=ucin1085759536

    Chicago Manual of Style (17th edition)

ucin1085759536
768
© 2004, all rights reserved.
This open access ETD is published by University of Cincinnati and OhioLINK.