Research On Technology Of Semantic Markup Based Rapid Finite Element Analysis

As an important method of computer simulation, finite element analysis (FEA) has been widely used in the new product design and product modification fields. How to reuse the analysis knowledge in the finished FEA cases, how to enhance FEA efficiency and reduce the substantial duplication of work are becoming the difficult problems of FEA. This paper proposed an approach that is based on the semantic markup for rapid FEA. The approach drawn from semantic markup technology and the XML matching technology provides rapid FEA service for the product designers and analysts.Firstly, the theoretical framework of the rapid FEA approach is given. The process of the rapid FEA approach is divided into three phases: problem definition, problem formulation and FEA solution routine, main models to define include: master model, engineering model, idealization model, analytical model and numeric model. The operational mechanism of this approach is studied. Secondly, research on the technology of the rapid FEA method. Marking and extracting methods of the engineering semantic markup are brought forward. Main work of this part include: the definition of engineering semantic; presenting the relation between engineering semantic markup and geometric model through properties; bringing forward the semantic markup method via interactive user interfaces and the generation of the dynamic interfaces; researching on the methods of extracting semantic markup and how to generate the engineering semantic markup XML file. Besides, this paper presents the creation of the FEA template and the method of FEA template's generation based on XML. The matching algorithm between semantic markup XML file and FEA XML template file is given, by which algorithm, XML files can get matched and FEA command flow is generated automatically.Lastly, programming tools such as VC++6.0 and JSP are used for the system. We can mark the engineering semantic for the part; also we can establish the relations between FEA semantic and design semantic. With this system, the whole FEA process gets rapid, parametric and automatic. So far, this method has shown great advantages in the FEA model building, thus shortens the time it takes to building the FEA model and promotes the development efficiency of new products.