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http://dx.doi.org/10.3795/KSME-A.2017.41.5.337

Strength Estimation of Die Cast Beams Considering Equivalent Porous Defects  

Park, Moon Shik (Dept. of Mechanical Engineering, Hannam Univ.)
Publication Information
Transactions of the Korean Society of Mechanical Engineers A / v.41, no.5, 2017 , pp. 337-343 More about this Journal
Abstract
As a shop practice, a strength estimation method for die cast parts is suggested, in which various defects such as pores can be allowed. The equivalent porosity is evaluated by combining the stiffness data from a simple elastic test at the part level during the shop practice and the theoretical stiffness data, which are defect free. A porosity equation is derived from Eshelby's inclusion theory. Then, using the Mori-Tanaka method, the porosity value is used to draw a stress-strain curve for the porous material. In this paper, the Hollomon equation is used to capture the strain hardening effect. This stress-strain curve can be used to estimate the strength of a die cast part with porous defects. An elastoplastic theoretical solution is derived for the three-point bending of a die cast beam by using the plastic hinge method as a reference solution for a part with porous defects.
Keywords
Die Casting; Porosity; Mori-Tanaka Method; Plastic Hinge; Three Point Bent Beam; Finite Element Method;
Citations & Related Records
Times Cited By KSCI : 1  (Citation Analysis)
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