Dynamic Simulation Of Three-dimensional
Motion Of The Human Arm And Upper Body
Author(s)
C. Y. A. Chan, A. B. Thornton-Trump
& K. M. A. Weiss-Bundy
Abstract
This paper presents the use of trajectory following methods for determining the
motion of the human upper body segments as they relate to arm segments and
human back movements in three-dimensional space. Given a hand trajectory in
global space and the position of the base of the spine, inverse dynamics can be
applied to develop the total moment at each joint of a linkage representing the
human arm and back. Using the co-ordinate systems and kinematics developed
in previous works, a fully scalable simulation of the human upper body is
developed and the dynamic and static moments at each joint are predicted for a
worker performing a repetitive task. The joint moments are predicted for a
simulated worker and then compared to those calculated for a human subject
performing the same task. The joint moment curves are compared for three
different workstation geometries for both the simulation and the human subject.
Keywords: dynamics, human back, human upper arm, three-dimensional
simulation, Euler equation, anatomical scaling.
1 Introduction
Repetitive strain injuries to workers in industry who are required to use
inappropriate workstation geometries have a large impact on society. Industry
has medical and training costs as well as a loss of production resulting from
repetitive strain injuries. In addition to the loss of income and quality of life to
the worker, there are additional medical costs. A tool to simulate the motion of a
Keywords
dynamics, human back, human upper arm, three-dimensional
simulation, Euler equation, anatomical scaling.
Related Book
Other papers in this volume
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