Method of incorporating outer skin and bulk material properties in a performance analysis of high pressure cast aluminum components

摘要

A method, apparatus and article of manufacture for determining properties in a high pressure die casting component. After receiving geometric information corresponding to a position of interest within the component, a beam-triangle intersection relationship is used to calculate a wall thickness of the position of interest; this relationship is simplified by using it in conjunction with an octal tree-based relationship. One or more calculations are performed to determine a skin layer thickness based on the calculated wall thickness, and the skin layer thickness calculations are based on a logarithmic relationship, a polynomial relationship, and / or a power law relationship. Changes in the shape and size of the component may be accounted for by adjusting the remaining skin layer thickness, for example, when the component as it is cast is subjected to subsequent machining or related post-molding operations. Based on this, the properties are mapped to allow for variations in the mechanical properties from node to node based on whether the node is located in the outer skin area or in the bulk area of the component.