Quick and easy refined analyses - take a closer look at details and local effects. Refined sub-modelling including meshing and global displacement

In many cases global analysis provides insufficient stress information in local areas. Submod is a very efficient tool for extracting global deflections from the global analysis and applying these to a local model for refined analysis, thereby providing detailed stress information in highly stressed areas.

Why use Submod?
The sub-modelling technique provides for refined analysis of a detail based on global analysis results. The motivation for such a refined analysis may be to achieve more accurate results, or to assess alternative designs of a part of the structure.

Provided that the model and results from the global analysis are available, together with a model of the part (the sub-model), Submod will perform a comparison of the two models and determine the position of the sub-model boundaries in the global model.

Displacements of the global model at this position are automatically extracted and imposed on the boundary of the sub-model whereupon a standard static analysis of the part may be performed.

The FE meshes of the global model and sub-model may be completely different, even using different element types. A node of the sub-model will get its imposed displacement picked up from within an element of the global model. The shape functions of the element theory are employed to compute this displacement thereby ensuring maximum accuracy.