Numerical modelling and simulation of sand mould manufacture process in lost foam casting

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Numerical modelling and simulation of sand mould manufacture process in lost foam casting

Jerzy Rojek

Instytut Podstawowych Problemów Techniki Polska Akademia Nauk, Warszawa.

DOI:

https://doi.org/10.7494/cmms.2003.3.0041

Abstract:

This paper presents a numerical model of sand mould manufacture process in lost foam casting. The mould filling with sand and Band compaction by vibration are modelled using spherical (in 3D) or cylindrical (in 2D) discrete elements. The motion of discrete elements is described by means of Newton-Euler equations of rigid body dynamics. Rigid particles interact among one another with contact forces. Numerical simulation predicts defects of the mould due to insufficient sand compaction around the pattern. Combining the discrete element model of sand with the finite element model of the pattern allows us to detect possible distortion of the pattern during mould filling and compaction. Results of numerical simulation are validated by comparison with experimental data.

Cite as:

Rojek, J. (2003). Numerical modelling and simulation of sand mould manufacture process in lost foam casting. Computer Methods in Materials Science, 3(3-4), 113 – 125. https://doi.org/10.7494/cmms.2003.3.0041

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