[Communications in Computer and Information Science] Recent Advances in Intelligent Manufacturing Volume 923 (First International Conference on Intelligent Manufacturing and Internet of Things and 5th International Conference on Computing for Sustainable Energy and Environment, IMIOT and ICSEE 2018, Chongqing, China, September 21-23, 2018, Proceedings, Part I) || DEM Modelling of a New ‘Sphere Filling’ Approach for Optimising Motion Control of Rotational Moulding Processes