This research focuses on a multidisciplinary collaborative modeling and simulation (M&S) approach for virtual prototyping. The design of complex product is supported by this approach in the distributed network environment. HLA and web services technologies are employed in our approach for interoperability and reusability of the M&S system. A HLA and web services based framework to support multidisciplinary M&S and its key technologies are presented. A consistent modeling method is studied. The interoperability issue of this approach is also discussed. A typical application demonstration of multidisciplinary collaborative M&S for the virtual prototyping of locomotive development is introduced. The demonstration of prototype system shows that HLA and web services are effective inftrastures for collaborative M&S and they are promising for a new paradigm for collaborative design of complex product.
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