Micro-Strength Analysis of Sand Mold for Casting Based on Bonded-Particle Model

Abstract:

The micro-strength of sand mold is analyzed based on bonded-particle model (BPM) due to the reason that the strength of sand mold largely influences the final casting properties. In this study, the stress and the strength as well as the stiffness parameters of the binding bridge between the sands are obtained firstly by establishing the equivalent micro-beam model of the binding bridge between the sands. Then, the tensile strength formula of Sand Mold is derived according to the idea packing shape of particle, which is then used for discussing the relationship between the tensile strength with the sand mesh and the mass fraction of binder. At last, the effects of the sand mesh and mass fraction of binder on the tensile strength of the Sand Mold are analyzed quantitatively, which shows the great agreement with the macroscopic experimental results of the sand mold strength.

• Periodical: Key Engineering Materials (Volume 723)
• Pages: 316-321
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.723.316
• Online since: December 2016
• Authors: Fu Xian Zhu*, Zhong De Shan, Fen Liu
• Keywords: Binding Bridge, Bonded-Particle Model, Micro-Strength Analysis, Sand Model

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