[EN] FAQ 000607 | Is it possible to display a parts list of a specific cross-section using the STEEL add-on ...

The support conditions of a beam subjected to bending are essential for its resistance to lateral-torsional buckling. If, for example, a single-span beam is held laterally in the middle of the span, the deflection of the compressed flange can be prevented, and a two-wave eigenmode can be enforced. The critical lateral-torsional buckling moment is increased significantly by this additional measure. In the add-on modules for member design, different types of lateral supports on a member can be defined using the "Intermediate supports" input window.

This technical article analyzes the effects of the connection stiffness on the determination of internal forces, as well as the design of connections using the example of a two-story, double-spanned steel frame.

A site joint consisting of hollow sections with end plates will be designed. It is the bottom chord of a truss that has to be divided for transport reasons.

• Cross-section optimization
• Transfer of optimized sections to RFEM/RSTAB
• Design of any thin-walled cross-section from SHAPE-THIN
• Representation of a stress diagram on a section
• Determination of normal, shear, and equivalent stresses
• Stress results of individual internal forces types
• Detailed representation of stresses in all stress points
• Determination of the largest Δσ for each stress point (for example, for fatigue design)
• Colored display of stresses and design ratios for a quick overview of the critical or oversized zones
• Parts lists and quantity surveying

• Determination of principal and basic stresses, membrane and shear stresses, as well as equivalent stresses and equivalent membrane stresses
• Stress analysis for structural surfaces including simple or complex shapes
• Equivalent stresses calculated according to different approaches:
  • Shape modification hypothesis (von Mises)
  • Shear stress hypothesis (Tresca)
  • Normal stress hypothesis (Rankine)
  • Principal strain hypothesis (Bach)
• Optional optimization of surface thicknesses and data transfer to RFEM
• Serviceability limit state design by checking surface displacements
• Detailed results of individual stress components and ratios in tables and graphics
• Filter function for surfaces, lines, and nodes in tables
• Transversal shear stresses according to Mindlin, Kirchhoff, or user-defined specifications
• Parts list of designed surfaces

In order to facilitate the data input, surfaces, members, sets of members, materials, surface thicknesses, and cross-sections are preset. It is possible to select the elements graphically using the [Select] function. The program provides access to the global material and cross-section libraries.

Load cases, load combinations, and result combinations can be combined in various design cases.

The combination of surface and member elements and separate designs allows you to model and analyze only critical parts, such as frame joints, using surface elements. The other parts of the model can be designed using member analyses.