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Abstract
Numerical simulation of the mould filling process is a very important aspect of casting computer aided engineering technology. However, it is time consuming; it may take a day, or even several days. This study tries to reduce the computational time of mould filling simulation by the even/uneven complex finite difference method (FDM) mesh technology. First, this paper introduces a mathematical model of the mould filling process. Then, the even FDM mesh technology, the uneven FDM mesh technology and the even/uneven complex FDM mesh technology are introduced; this paper also gives the even FDM mesh model and uneven FDM mesh model of a benchmark casting, and comprises the simulation results and computational time of the mould filling simulation by different mesh technologies. Finally, this paper gives an application on a die casting’s mould filling simulation using the even/uneven complex FDM mesh technology. The results show that the even/uneven complex FDM mesh technology has the advantages of both even and uneven FDM mesh technologies and thus can reduce the computation time of mould filling simulation efficiently.
This research was financially supported by the Program for New Century Excellent Talents in University (grant no. NCET-09-0396), the National Natural Science Foundation of China (grant no. 50605024) and the State Major Science and Technology Special Project Foundation for High-end Numerical Machine and Basic Manufacturing Equipment (project nos. 2009ZX04014-082 and 2011ZX04014-052).
Notes
This paper is part of a special issue of papers selected from MCSP8, the 8th Pacific Rim Conference on Modeling of Casting and Solidification Processes