RFEM 6 | Tutorial - Dynamic Analysis

The weld stresses between surfaces can be determined using the Stress-Strain Analysis add-on in RFEM 6. Furthermore, the stress limit determined according to the applicable standard can be input to determine the stress ratio of the weld. This article focuses on the fillet weld design according to AISC 360-22 [1] with two examples from AISC Volume 1: Design Examples [2].

According to AISC Design Guide 9 Section 4.1 [1], the following torsional stresses must be considered for open cross-sections subjected to warping:

Using the Timber Design add-on, timber column design is possible according to the 2018 NDS standard ASD method. Accurately calculating timber member compressive capacity and adjustment factors is important for safety considerations and design. The following article will verify the maximum critical buckling strength calculated by the Timber Design add-on using step-by-step analytical equations as per the NDS 2018 standard including the compressive adjustment factors, adjusted compressive design value, and final design ratio.

• General stress analysis
• Automatic import of internal forces from RFEM/RSTAB
• Graphical and numerical output of stresses, strains, clearance, and design ratios fully integrated in RFEM/RSTAB
• User-defined specification of the limit stress
• Summary of similar structural components for the design
• Wide range of customization options for graphical output
• Clearly arranged result tables for a quick overview after the design
• Simple traceability of the results due to the complete documentation of the calculation method, including all formulas
• High productivity due to the minimal amount of input data required
• Flexibility due to detailed setting options for basis and extent of calculations
• Gray zone display for unimportant value ranges: Product Feature "Stress-Strain Analysis with Gray Zone Display"

• Cross-section optimization
• Transfer of optimized sections to RFEM/RSTAB
• Design of any thin-walled section from RSECTION
• Representation of a stress diagram on a section
• Determination of normal, shear, and equivalent stresses
• Output of stress components for the individual member internal force 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
• Output of parts lists

After you have completed the design, the program takes care of clearly arranged results. Thus, the program shows you the resulting maximum stresses and stress ratios sorted by section, member/surface, solid, member set, x-location, and so on. In addition to the tabular result values, the add-on shows you the corresponding cross-section graphic with stress points, stress diagram, and values as well. You can relate the design ratio to any kind of stress type. The current location is highlighted in the RFEM/RSTAB model.

In addition to the tabular evaluation, the program offers you even more. You can also graphically check the stresses and design ratios on the RFEM/RSTAB model. It is possible for you to adjust the colors and values individually.

The display of result diagrams of a member or set of members enables you a targeted evaluation. For each design location, you can open the respective dialog box to check the design-relevant section properties and stress components of any stress point. Finally, you have the option of printing the corresponding graphic, including all design details.