In the solid modelling of boundary representation, if we store part adjacent entities for some entity, for example, a first edge for a face, topology structures from part relationships will result.
在以边界表示的实体造型中，如果为某实体元素保存部分的邻接实体元素，这便导致了部分关系的拓扑结构。
2
This paper carries out the comparison between FEM and the theory of thin-walled bar's bending and torsion and gives the methods for modelling and boundary processing.
将有限元与薄壁杆件弯扭理论两种计算方法进行了分析对比，提出了模型化及边界处理的方法。
3
The use of infinite elements for modelling wave radiation eliminates the effects of artificial reflection of waves from finite element boundary, therefore the computational accuracy can be assured.