Mass collaborative product development (MCPD) benefits people by high innovation products with lower cost and shorter lead\ntime due to quick development of group innovation, Internet-based customization, and pro to type manufacturing. Simulation is an\neffective way to study the evolution process and therefore to guarantee the success of MCPD. In this paper, an agent behavior-based\nsimulation approach of MCPD is developed, which models the MCPD process as the interactive process of design agents and the\nenvironment objects based on Complex Adaptive System (CAS) theory. Next, the structure model of design agent is proposed, and\nthe modification and collaboration behaviors are described. Third, the agent behavior-based simulation flow of MCPD is designed.\nAt last, simulation experiments are carried out based on an engineering case of mobile phone design. The experiment results show\nthe following: (1) the community scale has significant influence on MCPD process; (2) the simulation process can explicitly represent\nthe modification and collaboration behaviors of design agents; (3) the community evolution process can be observed and analyzed\ndynamically based on simulation data.
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