The 2 - d and 3 - d dem codes are developed using c - h - programming language based on the idea of ooa ( object oriented analysis ) . a set of preprocess and postprocess code for the dem is also developed . the two codes in one become an integrative discrete element analysis system : s - dem ( super - discrete element method ) 該計算程序與用opengl技術在vc + + 6 . 0環境下開發的功能強大的離散元前后處理程序構成了較為完整的離散元分析模擬系統s - dem ( super - discreteelementmethod ) 。