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A hybrid method for casting process simulation by combining FDM and FEM with an efficient data conversion algorithm by Ho-Mun Si; Chongdu Cho; Si-Young Kwahk is a Engineering article available to read on EtoBox.

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This paper proposes a combined numerical procedure with a data conversion that is developed for simulating casting processes. Casting processes accompany liquid/solid phase transformation subjected to cooling. On simulating a casting process there are usually dilemmas that the ®nite different method is very useful to ̄ow analysis but not ef®cient for stress analysis below solidus temperature; on the other hand, the ®nite element method (FEM) is true for the contrary. So we propose this hybrid method to take both advantages of the ®nite difference method (FDM) and the FEM for casting simulation. Temperature history obtained from a solidi®cation simulator using FDM is used to calculate the thermal strains in FEM, interpolating the nodal temperatures by ®nite difference heat transfer calculation onto the ®nite elements nodal values. In order to validate the proposed algorithm, numerical examples are presented and compared with a commercial stress analysis program. A fully three-dimensional casting simulation as an application is proved to be satisfactory. The interface data conversion program in this study can be used for any FDM and FEM programs.

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Author

Ho-Mun Si; Chongdu Cho; Si-Young Kwahk

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0924-0136)

Published

2003

Language

EN

Field

Engineering (Physical Sciences)