Casting process modeling using CAST2D: The part mold interface

Technical Report · Tue Oct 01 04:00:00 EDT 1991

DOI:https://doi.org/10.2172/6005389· OSTI ID:6005389

Shapiro, A B

Correctly modeling the physics across the part-mold interface is crucial in predicting the quality of a cast part. Most metals undergo a volume change on solidification (e.g., aluminum -6.6%) and shrinkage on cooling. As the cast metal shrinks, it pulls away from the mol wall creating a gap. This gap effects the thermal contact resistance between the part and mold. The thermal contact resistance increase as the gap widens. This directly effects the cooling rate and ultimately the final cast shape, stress state, and quality of the cast part. CAST2D is a coupled thermal-stress finite element computer code for casting process modeling. This code can be used to predict the final shape and stress state of cast parts. CAST2D couples the heat transfer code TOPAZ2D and solid mechanics code NIKE2D. CAST2D is a code in development. This report presents the status of a general purpose thermal-mechanical interface algorithm. 3 refs., 3 figs.

• Research Organization: Lawrence Livermore National Lab., CA (United States)
• Sponsoring Organization: DOE; USDOE, Washington, DC (United States)
• DOE Contract Number: W-7405-ENG-48
• OSTI ID: 6005389
• Report Number(s): UCRL-ID-108581; ON: DE92002941
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360101* -- Metals & Alloys-- Preparation & Fabrication
99 GENERAL AND MISCELLANEOUS
990200 -- Mathematics & Computers
C CODES
CASTING
CASTING MOLDS
COMPUTER CODES
COMPUTERIZED SIMULATION
ELEMENTS
FABRICATION
FINITE ELEMENT METHOD
INTERFACES
METALS
NUMERICAL SOLUTION
PHASE TRANSFORMATIONS
SHRINKAGE
SIMULATION
SOLIDIFICATION