Visualizing the Postural Stability of a Digital Human in Working

The purpose of this study is to develop an evaluation method for the postural stability using a digital human model. Experiments were carried out to measure two kinds of stability limits defined in this study. Based on the results new software was developed to visualize the postural stability of the digital human model Jack (EDS). Using the model a methodology was proposed to judge easily whether the human body in any working postures could be maintained with effort or not. It was also demonstrated that the postures unsafe to work could easily be found.