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Digital human models (DHMs) provide tools for simulating human performance and capabilities, which allow users to evaluate any product or process virtually. As applications for DHMs expand substantially, so does the necessity for more complex and more accurate models. This in turn requires coupling of sometimes co-located sub-models for simulating various aspects of the human. In addition, DHMs are used in conjunction with other types of (non-human) models in order to evaluate products and processes, and this also necessitate integrated systems for seamless concurrent engineering. This level of multi-scale modeling and human systems integration requires a new inter-process communication (IPC) system specifically for DHMs. Thus, this paper provides a new architecture for peer-to-peer IPC. The proposed system uses a TCP/IP protocol for necessary security and for ensuring all data packets are received in order. The system has been designed to facilitate an uninterrupted workflow, which is critical for applications that involve concurrent team-oriented analysis and design. In addition, this new system supports multiple connection mediums and facilitates variations in the number of users. The common issues of blocking and potential lost data have been addressed. Test cases demonstrate superior computational speed.
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