Seven case studies reported in Chaffin/1/ describe successful use of various digital human models to analyze and improve different product and workplace designs. One of the major reasons for their use seems to be a belief by the designers and managers that using human simulation technology within a digital mock-up (DMU) will decrease the design time and enhance the number and quality of design options that could be rapidly evaluated by the design team. This view is consistent with the concept of reducing the total design and engineering costs by using more computer aided engineering CAE and DMU methods to achieve rapid prototype development and testing, as diagrammed in Figure 1.
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