|
|
|
Application of contact element method in the
numerical simulation of thermal stress |
| Hui LI,Jian-song SHI,Rong-rong ZONG,Xiao-xia WANG, |
| School of Materials Science
and Engineering, Hefei University of Technology, Hefei 230009, China; |
|
|
|
|
Abstract The interaction relationship between casting and mold (core) decides the stress level of casting and mold (core). In this article, the stress field during the casting process of stress frame casting was simulated by contact element method provided of the professional casting simulation software, ProCAST, compared its results with the simulation results of sand mold with full rigidity. Meanwhile, the influence of shake-out temperature on residual stress was also in study. It showed that the stress result of full rigidity mechanical model is bigger than that of the contact element method. The casting residual stress first increases and then decreases along with the elevation of the shake-out temperature, and the residual stress reaches the maximum when the shake-out temperature is 600°C. The lower is the shake-out temperature, the smaller is the casting deformation.
|
| Keywords
numerical simulation
casting/mold (core)
contact element
residual stress
shake-out temperature
|
|
Issue Date: 05 December 2009
|
|
|
Wiese J W, Dantzig J A. Modeling stress developmentduring the solidification of gray iron casting. Metallurgical Transactions, 1990, 21A(2): 489–497
|
|
Chang A, Dantzig J A. Improved sand surface elementfor residual stress determination. AppliedMathematical Modeling, 2004, 28(6): 533–546
doi: 10.1016/j.apm.2003.10.016
|
|
Xu Y, Kang J W, Huang T Yetal. Review on the interface interaction between the castingand mold (core) in thermal stress analysis of castings. Foundry, 2005, 54(12): 1187–1190 (in Chinese)
|
|
Xu Y, Kang J W, Huang T Y. Application of contact element method in simulating thermalstress during solidification of casting. Foundry Technology, 2006, 27(5): 506–510 (in Chinese)
|
|
ESI Group. ProcastUser Manual Version 2008.0, 2008
|
|
Foundry Institution of Chinese MechanicalEngineering Society. Casting Handbook, IV,Molding Materials. Beijing: China Machine Press, 2002 (in Chinese)
|
|
Xiao J M, Chen G X. Researching the influenceof shake-out temperature on residual stress. Foundry, 2003, 52(7): 498–502 (in Chinese)
|
|
Foundry Institution of Chinese MechanicalEngineering Society. Casting Handbook, I,Cast Iron. Beijing: China Machine Press, 2002 (in Chinese)
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
| |
Shared |
|
|
|
|
| |
Discussed |
|
|
|
|
