This is a difficult task because even two experienced human engineers may not agree on the proper analytical location for a member. To generate the nodes, ISM must determine a desired analytical location for the members. If the shortest distance between the two volumes is equal to or less than the specified Connectivity Tolerance, then ISM will consider the two members as connected. ISM then determines the distance between the 3D volumes that represent each member. To detect which members should be connected, ISM simplifies the member geometry into extruded rectangles. 2.1 Determining Which Members Should Be Connected By Nodes Refer to Appendix A for details on settings in this dialog. The STAAD.Pro settings available for controlling how the nodes are generated are shown in the following dialog. ISM assists STAAD.Pro in understanding a physical model by generating a set of nodes for the model that defined the key node locations and the member connectivity at those nodes. In this document we will discuss a ProStructures and STAAD.pro workflow, but the recommendations also apply to other physical to analytical workflows. This Tech Note gives some best practices or recommendations on making those strategic choices. Integrated Structural Modeling (ISM) coordination between physical and analytical models can be facilitated by strategic choices of modeling style and node generation options.
These two different model types can create challenges when coordinating models from the two products.
Structural detailing applications like ProStructures or AECOsim Building designer or Revit detail a physical structure, while analytical applications like STAAD.Pro or Ram Elements typically analyze and design a simplified analytical structure. Modeling and Node Generation Best Practices/Recommendations Tech Note
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