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http://dx.doi.org/10.3795/KSME-A.2012.36.12.1599

Analysis of Impact Behavior of Al-Alloy Castings Considering Internal Defects  

Jo, Seong-Woo (Dept. of Virtual Engineering, Univ. of Science and Technology)
Kwak, Si-Young (e-Design Center, Institute of Industrial Technology(Dept. of Virtual Engineering, Univ. of Science and Technology))
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.36, no.12, 2012 , pp. 1599-1604 More about this Journal
Abstract
In general, internal defects, such as shrinkage in casting, cause stress concentration and can be a starting point for cracks. Therefore, it is important to understand the effects of internal defects on the mechanical properties including the impact behavior. This study aim is to evaluate the effects of internal casting defects on the impact performance of Al-alloy castings. Both an experimental method and computational analysis were used to achieve the research objective. The internal defects in the casting were scanned using an industrial CT scanner, and their shape was simplified using ellipsoidal primitives for impact analysis. The good agreement between the experimental and computer simulation results verified the reliability of the proposed computational method for the FEA of casting components with internal defects.
Keywords
Finite Element Method; Impact Behavior; Internal Defect; SSM(Shape Simplification Method);
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