Developed in collaboration with the universities of Genova & Pavia

  • Ημερομηνία: 16/7/2014

The FME Method has been implemented in the  program 3Muri by Prof. Dr. Sergio Lagomarsino, (University of Genova), Dr. Andrea Penna, (EUCENTRE, Pavia) and Dr. Alessandro Galasco (University of Pavia). The results of advanced research on masonry structures guarantee the continued development and the next versions of 3Muri. 

Macro-elements or Finite elements?

Various seismic calculation methods for masonry buildings can be found in the technical literature (e.g. POR method, Finite Element Method, FME Frame by Macro Element). The POR Method implies strong restrictions, significantly reducing its application limits. As an example, the requirement of an infinitely rigid slab hardly applies to reality in existing buildings. The Finite Element Method is in certain cases very useful, but since it is mesh dependent, it is strictly dependent on the definition of the model. Moreover, it is not explicitly considered by the existing codes and it is not clear how the stress values at some points could be used to check the failure of an entire wall panel in the above described ways.

The FME (Frame by Macro Element) Method selected by 3Muri defines the building by structural macro elements (such as walls, beams, tie rods, slabs, columns, tie beams). Both theoretical research and practical applications demonstrated that this is the most scientifically correct and effective approach.

Damage observation on existing buildings clearly brought to the definition of the “masonry macro element” as the element able to better reproduce actual behaviour with a reduced calculation load.

The theory at the basis of 3Muri comes from advanced research on masonry structures made during experimental campaigns and from direct observations of damage due to seismic events, that have always been the source of interesting suggestions.

ERGOCAD LTD is the official and exclusive distributor and support center of 3Muri in Greece and Cyprus.