Analysis of the stress-strain state of a single-span hinged plane frame with a double-pitched girder subjected to a vertical uniformly distributed load, concentrated vertical and horizontal loads, and a bending moment.


Analysis of bending in the plane of the ring under distributed load, shear deformations are neglected.


The deformed state of a semicircular arch of constant cross-section with hinged supports subjected to a concentrated load acting in its plane.


The deformed state of a split circular ring under bending in its plane, without considering shear deformations.


The cantilever circular bar of constant cross-section under in-plane concentrated loads and a moment applied at the free end.


The accuracy of determining the displacement at the free end of the bar in the direction of the concentrated load for models of different dimensionality.


Bending of a rectangular wall‑beam rigidly supported at the sides, subjected to a uniformly distributed load on the top surface.


The stress‑strain state of a cantilever circular bar of constant cross‑section subjected to an out‑of‑plane concentrated load at the free end.


Stress strain state of a circular plate clamped at the edges, subjected to a uniformly distributed transverse load


Square plate simply supported along the perimeter and subjected to a uniformly distributed load



The LIRA-FEM version 2025 will use a different protection from Wibu-Systems AG, a German business. The page provides setup instructions for the CodeMeter network license server along with general details about key types.


This paper explores two main methods of running LIRA-FEM on a Mac: virtualization through Parallels Desktop for M-series processors and using Boot Camp for Macs with Intel processors. We will go over the benefits and drawbacks of each approach. Finally, we'll include a detailed installation tutorial for LIRA-FEM using Parallels...


Suppose we have to make the automatically generated PR types come from the LIRA-CAD module to the LIRA-FEM program; in these PR types, the reinforcement pattern is arranged in two layers.


Thermal loads

Thermal loads

The article describes how to model thermal loads in SAPFIR. To model the thermal loads in LIRA-CAD module of the program, use the specialised tools available on the "Analytics" tab, on the "Analytical load" panel, in the "Loads" drop-down list.


The "Moving load" tool is mentioned to specify traffic loads on different types of structures: stylobate pavement, floor slabs of parking, bridge structures, motorways, etc.


Soil pressure

Soil pressure

For various purposes it can be useful to model the soil pressure on the basement walls. The commands necessary for this purpose are presented on the "Create" tab, "Loads" panel.


The construction of finite element meshes is an important stage of solving the problem of determining the SSS of structures. This stage is associated with satisfaction of a number of contradictory requirements.


LIRA-FEM plugin in Revit helps our users to transfer model directly to LIRA-FEM or via SAPFIR, perform analysis and return reinforcement results back in Revit.


This is one of webinars series presented by LIRALAND for LIRA-FEM structural analysis software.
In this recorded webinar, we review BIM integration on the base of IFC file from REVIT.