Journal of Applied Sciences1812-56541812-5662Asian Network for Scientific Information10.3923/jas.2013.321.325PaoWilliamChenXiaohuiChaoLin22013132The capability to predict hot spot in solidifying castings
is the utmost important issues during parts design. The present study investigated
a simple method to predict temperature profile and possible hot spot in solidifying
castings based on medial axis interpolation. One of the major features of medial
objects is that it is a reduced topology of three-dimensional geometry. Hence,
a geometrically complex three-dimensional object can be represented by a combination
of medial objects, e.g., 2-3D surfaces and lines. This allows the large amount
of geometrical information to be stored with minimal space requirement and the
three dimensional object can be manipulated in a two-dimensional space. In this
study, we exploit this particular property of medial objects and its possible
application to casting. This study proposes a medial axis-based geometric technique
that could be used to optimize the insulation padding around the cast-mould
interface. Numerical simulation showed that the current geometric method was
successful in relocating the hotspot in casting the feeder.]]>Minkoff, I.,1986Codina, R., U. Schafter and E. Onate,1994Mechighel, F. and M. Kadja,2007Lewis, R.W., K. Morgan, H.R. Thomas and K.N. Seetharamu,1997Ravi, B. and M.N. Srinivasan,1996Wlodawer, R.,1966Berry, J., V. Kondic and G. Martin,1959Heine, R.W. and J.J. Uicker,1983Neises, S.J., J.J. Uicker and R.W. Heine,1987Ravi, B. and M.N. Srinivasan,1989Sirilertworakul, N., P.D. Webster and T.A. Dean,1993Campell, J.,1997Ransing, R.S., W.K.S. Pao, C. Lin, M.P. Sood and R.W. Lewis,2004Pao, W., R.S. Ransing, R.W. Lewis and C. Lin,2004Lewis, R.W., R.S. Ransing, W. Pao, J. Bonet and S. Kulasegaram,2003Wong, M.L.D. and W. Pao,2010Shirazi, B., H. Fazlollahtabar and D. Shafiei,2008