前处理有向凸多边形智能识别技术研究

Study of Intelligent Identification Technology of Convex Polygon in Pre-process

随着计算机技术的提高,有限元分析软件在结构工程中的运用越来越广泛。对于一般的结构体系往往都要加载许多面荷载如风荷载和楼面荷栽。目前有限元软件中的一般处理办法是先给结构标识出要加载的面,然后在面的法线方向施加荷载。为了提高效率,要求计算机能自动识别结构中的面。本文提出了有向凸多边形智能识别技术,能按指定方向自动搜索结构中的凸多边形。算例表明该方法具有很高的实用性,可以在很大程度上加快有限元的前处理,提高了结构分析设计的效率。

With the rapid development of technology of the computer, general FEM software is used to analyze the structure by more and more engineers. In general analysis many surface loads are applied in the structure such as wind load, floor load and so on. The ordinary approach in recent general FEM software is that: first identify the surface to be loaded of the structure and then apply the loads on the surface. In order to speed the preprocess it is necessary to design a convenient method to intelligently identify the surface of the structure. In this paper, an intelligent identification of the convex polygon is proposed and also the corresponding program is developed. The sample shows that the method proposed in the paper is efficient and can extremely accelerate the structural analysis process.