The stress-strain state of a 3D bar system with elastic restraints under the concentrated load

The stress–strain state of a plane truss under mechanical, thermal and kinematic loads.

The stress–strain state of a beam with a tie, taking into account transverse shear deformations in the beam.

The stress–strain state of a cantilever plate.

The stress–strain state of a circular plate.

The stress–strain state of a cylinder with free ends subjected to internal pressure.

The stress–strain state of a torus subjected to internal pressure.

The stress–strain state of a cylindrical shell subjected to self-weight.

The stress–strain state of a narrow cantilever plate subjected to a couple of forces causing torsion.

The stress–strain state of a vertical prism subjected to loading due to its self-weight.

The stress–strain state of a prismatic beam subjected to a bending moment.

The stress–strain state of a beam on an elastic foundation under the concentrated forces and a distributed load varying according to a triangular law.

The stress–strain state of a plane truss under the concentrated load.

The stress–strain state of a system of intersected bars subjected to a distributed load and a concentrated load acting in the plane of the system.

Bending in the plane of loading under the concentrated load, neglecting transverse shear deformations. The maximum values of transverse displacement w, rotation angle θ, and bending moment M are verified.

The stress state in the elements of a spatial pin-jointed bar system subjected to a concentrated load.

Combined loading (transverse load, concentrated load) acting in a single plane, neglecting transverse shear deformation. Displacements and internal forces are verified.

Beam fixed at both ends subjected to in-plane loading without considering shear deformation. The maximum transverse deflection and bending moments are verified.

The stress–strain state of a beam fixed at both ends under the uniformly distributed load, concentrated axial and transverse forces, and a bending moment.

The deformed state of a simply supported beam (with three stiffness steps) subjected to concentrated loads, neglecting transverse shear deformation. Transverse displacements and rotations are verified.

The stress–strain state of a two-span simply supported beam with an intermediate elastic support subjected to concentrated transverse forces applied at the mid-spans.

The stress–strain state of a beam (on an elastic horizontal foundation) under the concentrated vertical forces.

If the design model is too large, it can be convenient to organize a recursive analysis by partitioning the entire system into subsystems—super-elements (SE). This approach works well when the subdivision is natural: for example, a building composed of volumetric blocks (each volumetric block is a super-element) or ...

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.

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.

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.