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首页> 外文会议>Fifth International Conference on Analysis of Discontinuous Deformation, ICADD-5 Oct 6-10, 2002 Beer Sheva, Israel >Grand challenge of discontinuous deformation analysis
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Grand challenge of discontinuous deformation analysis

机译：不连续变形分析的巨大挑战

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摘要

It is now accepted that many processes in nature and industry, and problems of science and engi neering, cannot be modeled using the assumption of continuum properties. In recent decades a number of formulations have been developed, based on the a priori assumption that these processes are best modeled by considering interacting discontinua. These have been accompanied with approximate computational methods such as the discrete element method (DEM) combined discrete-finite element methods (FEM/DEM) and discontinuous deformation analysis (DDA). In practice, the applicability and success of these methods, up until recently, has been greatly limited by the CPU power available. In this article the feasibility of large-scale computer simulations of discontinuum problems is investigated in the light of our recent algorithmic developments and ever-decreasing hardware constraints. We also report on the implications of our latest algorithm, which in principle enables us to model a whole range of particulate processes using real particles. A virtual game of 3D snooker (or pool) in which we can introduce a million arbitrary-shaped snooker "balls" of all sizes and as many simultaneous players as one likes is now within our reach.
机译：现在已经公认，自然界和工业界的许多过程以及科学和工程学的问题不能用连续性的假设来建模。在最近的几十年中，基于先验的假设已经开发了许多公式，这些假设是通过考虑相互作用的不连续点来最好地模拟这些过程。这些都伴随着近似的计算方法，例如离散元法（DEM），离散有限元法（FEM / DEM）和不连续变形分析（DDA）。实际上，直到最近，这些方法的适用性和成功一直受到可用CPU能力的极大限制。在本文中，根据我们最近的算法开发和不断减少的硬件限制，研究了对不连续问题进行大规模计算机仿真的可行性。我们还报告了最新算法的含义，该算法原则上使我们能够使用真实粒子对整个粒子过程进行建模。一个3D斯诺克（或台球）虚拟游戏，现在我们可以触及百万个任意大小的任意形状的斯诺克“球”，并且可以同时容纳一个喜欢的人。

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