Modeling of mold filling of Al gravity casting and validation with X-ray in-situ observation

Autor:	Itsuo Ohnaka, Jindong Zhu, Hai-Dong Zhao
Rok vydání:	2008
Předmět:	Engineering drawing Materials science Applied Mathematics Finite difference method Mechanics Finite element method Momentum Volume (thermodynamics) Casting (metalworking) Modeling and Simulation Free surface Modelling and Simulation Heat transfer Dimensionless quantity
Zdroj:	Applied Mathematical Modelling. 32(2):185-194
ISSN:	0307-904X
DOI:	10.1016/j.apm.2006.11.009
Popis:	In the mold filling simulation, element parameters including volume filled ratio, surface dimensionless distance, and surface filled ratio, were proposed to describe the shape and location of free surfaces in DFDM (Direct Finite Difference Method) elements. A model of the filling process was established, specially taking into account the mass, momentum and heat transfer in the vicinity of free surfaces. It was applied to an experimental AC4C (Al–7Si–0.4Mg) gravity casting. With a special X-ray apparatus, in-situ observation and record of actual mold filling process of the casting were carried out. The simulation results were validated and analyzed by comparing with the observation. The liquid flowing in the casting runner and ingate as well as the evolution of free surfaces were analyzed and discussed.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::45cd780d20ebed0a0ebdf7fb02e1ce75 Zobrazit plný text záznamu Full Text from ScienceDirect