Virtual experiment system for metal creep performance testing based on VRML

A virtual experiment system for metal creep performance testing is built by virtual reality modeling language (VRML). The structure, function and design principles of the system are described and its implementation procedure is also discussed. The key development process, including object modeling, 3D scene building, VRML connecting to the real-time database, design of interactive virtual 3D scene and complex virtual interaction, is illustrated in this paper. In addition, the following key problems have been solved during the system realization: virtual models building and geometrical transforming, database designing and optimizing, 3D virtual experimental scenes combining dynamically, the realization of database accessing and the communication of virtual entities.