The model presented in the video shows how to model contacts using surface releases and special meshing options for solid elements, as well as how to connect members to surfaces and solid elements. The plastic analysis using RF-MAT NL visualizes stress redistributions in the structural system. It provides a practical example of the use of nonlinear material models in steel structures. The approaches presented allow for precise simulations for challenging connection problems. ModelGroup0002 also illustrates the possible applications of cross-module calculations.
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Steel Connection: Solid Elements and Contact
Number of Nodes | 73 |
Number of Lines | 54 |
Number of Members | 6 |
Number of Surfaces | 30 |
Number of Solids | 8 |
Number of Load Cases | 1 |
Total Weight | 0.011 t |
Dimensions (Metric) | 0.548 x 0.389 x 0.389 m |
Dimensions (Imperial) | 1.8 x 1.28 x 1.28 feet |
Program Version | 5.23.01 |
You can download this structural model to use it for training purposes or for your projects. However, we do not assume any guarantee or liability for the accuracy or completeness of the model.
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
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Want to automatically consider steel joint stiffness in your global RFEM model? Utilize the Steel Joints add-on!
Activate joint-structure interaction in the stiffness analysis of your steel joints. Hinges with springs are then automatically generated in the global model and included in subsequent calculations.
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In the ultimate configuration of the steel joint design, you have the option to modify the limit plastic strain for welds.
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The "Base Plate" component allows you to design base plate connections with cast-in anchors. In this case, plates, welds, anchorages, and steel-concrete interaction are analyzed.

In the "Edit Section" dialog box, you can display the buckling shapes of the Finite Strip Method (FSM) as a 3D graphic.
How can treating a connection as fully rigid result in an uneconomical design?
Is it possible to consider shear panels and rotational restraints in the global calculation?