Application of centroidal voronoi diagram in numerical model of microforming process

Authors

Hai Na Lu, University of WollongongFollow
Dong Bin Wei, University of WollongongFollow
Zheng Yi Jiang, University of WollongongFollow

RIS ID

54656

Publication Details

Lu, H. Na., Wei, D. Bin. & Jiang, Z. Yi. (2012). Application of centroidal voronoi diagram in numerical model of microforming process. In 3rd International Conference on Manufacturing Science and Engineering, ICMSE 2012, 27-2 March 2012, Xiamen, China. Advanced Materials Research, 476-478 508-512.

Abstract

Grain size, shape and orientation play an important role on the deformability of micro workpiece as the geometrical dimensions approach to a characteristic scale in micro-forming process. This paper addresses the three-dimensional (3D) finite element (FE) model with weighed centroidal voronoi diagram (WCVD). Steady-state grains are generated when the voronoi generating points approach the grain centroid utilising a simplex integration algorithm. As a result of the centroidal process, the topological features of grains advance the uniform and steady state gradually, which may cause a decrease of interfacial energy. The grain size distribution is compared between the 3D domain and random cross-sectional plan. The effects of centroidal process on the distributions of grain size and number of grain corners, facet and edge are analysed.