Master class from our chief engineer about possibilities of model creation in LIRA-FEM program. You will learn how to generate simple geometry in SAPFIR GENERATOR System.

Drifts are used to evaluate the relative horizontal displacements of a structure, in particular to check storey drifts under seismic actions. In LIRA-FEM, drift is determined for a specified pair of nodes as the ratio of the difference between their horizontal displacement vectors to the distance between the nodes. Node pairs can b...

Accuracy of calculated geometric properties for a solid octagonal cross-section.

Accuracy of calculated geometric properties for a solid hexagonal cross-section.

Accuracy of calculated geometric properties for a solid pentagonal cross-section.

Accuracy of calculated geometric properties for a solid square cross-section.

Accuracy of calculated geometric properties for a solid semicircular cross-section.

Accuracy of calculated geometric properties for a solid equilateral triangular cross-section.

Accuracy of calculated geometric properties for a solid elliptical cross‑section.

Contact analysis of a cylindrical pipe

System with unilateral springs.

Cantilever bar with unilateral supports

Modal analysis of plate.

Modal analysis of a thin plate.

Modal analysis of a beam with a variable cross-section.

Buckling of a cantilever beam under in-plane bending

Buckling of a cantilever bar under uniformly distributed axial compressive load

Buckling of a cantilever bar subjected to a compressive load

In-plane buckling of a cantilever strip with a rectangular cross-section subjected to a transverse load applied at the free end

LIRA-FEM RES API provides access to the calculation results of LIRA-FEM projects using programming languages that support ActiveX or COM technology, such as Visual Basic Script, JavaScript, C#, Java, Visual Basic, Visual Basic.NET, C++, Delphi, etc.

LIRA-FEM API allows you to control the VISOR system from other programs, for example from Microsoft Excel, using programming languages that support ActiveX or COM technology, such as Visual Basic Script, JavaScript, C#, Java, Visual Basic, Visual Basic.NET, C++, Delphi, etc.

LIRA-FEM supports several licensing models, allowing you to choose the most suitable option for individual use, companies, or educational institutions.

Using CodeMeter Control Center, you can activate software licenses, update CodeMeter USB dongles, create license request files, import received license files, and view the contents of activated licenses.

This article explains how to create LIRA‑FEM extensions and use the capabilities listed above. The article is structured so that simpler techniques are described first, and more complex ones follow.

The stress-strain state of a thick circular slab rigidly fixed along the contour and subjected to a uniformly distributed load applied to the upper surface, in accordance with the three-dimensional theory of elasticity.

The stress-strain state of a cylindrical tank with a wall of constant thickness subjected to liquid pressure.