Interaction Formulae for N‐My and N‐Mz and their Accuracy in Hollow Sections

Abstract In those cases where architectural requirements are a priority, hollow sections the preferred solution. Considering cross‐sectional classes 1 and 2, plastic design is possibility that preferable for both economic ecological reasons. technical standards literature, wide variety of interaction formulae can be found. However, in most cases, information about their accuracy not provided. this article, different two frequently used combinations internal forces moments (N‐M y N‐M z ) determined. Comprehensive parametric studies show given EN 1993‐1‐1 exhibit some non‐conservative results. addition to comparison levels, simplified will introduced here allowing conservative sections.