President of ODAN-DETECH Group Inc.
This 3D model of the main structure was made with a 3rd-party general FEA software
Using IDEA Connection which utilizes the CBFEM (Component Based Finite Element Model) we were able to model many different components and geometries knowing that efficient use of material is assured. The anchor joint could have been modeled in the traditional FEA programs, however even with the best of modelers the chore is enormous. IDEA StatiCa is specifically designed for steel joints. Changing stiffeners, member components, welds and bolts are routine in IDEA.
CBFEM method tries to create the model precisely. The analysis plate/walls are not interconnected, no intersections are generated between them, unlike the methods used when modeling structures and buildings. Mesh of finite elements is generated on each individual plate independently of the mesh of other plates. Welds are modeled as special massless force interpolation constraints, which ensure the connection between the edge of one plate and the surface/edge of the other plate. The unique model of bolts provides excellent results – both from the point of view of precision and of the analysis speed. The method is protected by patent. The steel base plate is placed loosely on the concrete foundation. It is a contact element in the analysis model – the connection resists fully compression, but does not resist tension.
In the past, we created FEA models with Nastran and did the stress analysis. With simpler connections, we used spread sheets or a program called LIMCON.
Using IDEA StatiCa we saved at least ¼ the time assuming you got it right the first time. LIMCON was limited to simple connections and couldn’t solve a complicated connection like this anchor.
For sure we get a more economical design. Based on our FEA experience you see the stresses visually. The effects of a stiffener are prominent. IDEA StatiCa makes the workflow process more efficient and adds the caveat of CODE checks!!
Simple, visual and the power of FEA. The biggest advantage is easy to use. There are other similar programs, but not one like IDEA. This is why we chose IDEA StatiCa.
The ODAN-DETECH Group Inc. is a multi-discipline consulting engineering firm with a staff that has extensive experience in Civil & Structural engineering, Building sciences, and the Construction fields. It was formed in 1992 by the amalgamation of the Odan corporation (formed in 1985) and Detech Engineering (formed in 1988).