拆除爆破研究中数值分析方法的比较与选择

概述了数值分析法的分类。介绍了平面杆系有限元法、离散元法、数值流形法和不连续变形分析等几种数值分析方法。简单地讨论了平面杆系有限元法的分析步骤以及在拆除爆破中适于解决的问题 ;同时叙述了流形分析中采用的有限覆盖技术。通过分析和比较这几种方法在拆除爆破研究中的应用 ,作者认为 ,当前应用传统的有限元法进行爆破理论研究或拆除爆破模拟存在一些困难 ;离散元法用于拆除爆破理论的研究是可行的 ;不连续变形分析法对于拆除爆破模拟研究是一种具有良好前景的数值方法

COMPARISON AND SELECTION OF NUMERICAL METHODS APPLIED IN RESEARCH OF BLASTING DEMOLITION

The classification of numerical method was outlined.Some numerical methods such as Finite Element Method(FEM) for plane linkage,Discrete Element Method (DEM),Manifold Method (MM) and Discontinuous Deformation Analysis (DDA) were introduced.The analysis steps of Finite Element Method for plane linkage and the problems that can be solved by it in demolition blasting were briefly discussed.At the same time,the Finite Covering Technology adopted in manifold analysis was described.Through analyzing and comparing their application in the research of demolition blasting,the author thinks that there are,at present,some difficulties in use of traditional FEM for the research of blasting theory and simulation of demolition blasting.DEM is feasible for research of blasting theory.DDA is a good numerical method for simulation of demolition blasting.