With the increasing of computer capabilities, Computer aided ergonomics (CAE)
offers new possibilities to integrate conventional ergonomic knowledge and to
develop new methods into the work design process. As mentioned in [1],
different approaches have been developed to enhance the efficiency of the
ergonomic evaluation. Ergonomic expert systems, ergonomic oriented information
systems, numerical models of human, etc. have been implemented in numerical
ergonomic software. Until now, there are ergonomic software tools available,
such as Jack, Ergoman, Delmia Human, 3DSSPP, and Santos, etc. [2-4]. The main
functions of these tools are posture analysis and posture prediction. In the
visualization part, Jack and 3DSSPP produce results to visualize virtual human
tasks in 3-dimensional, but without realistic physical properties. Nowadays,
with the development of computer technology, the simulation of physical world
is paid more attention. Physical engines [5] are used more and more in computer
game (CG) field. The advantage of physical engine is the nature physical world
environment simulation. The purpose of our research is to use the CG technology
to create a virtual environment with physical properties for ergonomic analysis
of virtual human
