VERSION HISTORY
LIRA-FEM

Improvements to documentation

LIRA-SAPR 2024 R1 Last updated: Oct 15, 2025 14:47:04
  • There is a new option to add posters to the Report Book and to resize the virtual canvas; it enables you to scale the screenshots without losing quality.

    There are two ways to set the poster scale: to specify the image size in the dialog box, or to set the type of image that will be used as a basis for the scale calculation. With this option, you can generate RC drawings in graphical software applications by using high-resolution pictures as underlays.

How to create a poster of the model in the Report Book and to resize the virtual canvas

How to create a poster of the model in the Report Book and to resize the virtual canvas
  • A new standard table, "Total loads", is added; it is available from the mode of input data and output data. The table can be used to prepare documentation and check the specified external static loads on nodes and elements, as well as the calculated inertial forces for dynamic loads

Generation of tables Total loads for the input and output data

Generation of tables Total loads for the input and output data
  • In the properties of the Report Book, it is possible to select a format for storing images. By default, the *.png format is used.

  • New option to add all selected pictures (.jpg, .png, .bmp, .ico, .emf, .wmf, .gif) and other documents (.txt, .rtf, .doc, .docx, .xls, .xlsx) to the Report Book. All pictures and other documents will obtain the name as in initial file.

How to link files in the Report Book

How to link files in the Report Book
  • The "Periods of vibrations" table contains new columns with values of dissipation ratios and with information about the most dangerous cosines for each mode shape. This information was excluded from the analysis protocol of the problem.

Table of vibration periods

Table of vibration periods
  • The tables of input and output data contain new data.

Improvements to the "Cross-Section Design Toolkit" module

LIRA-SAPR 2024 R1 Last updated: Oct 15, 2025 14:47:04
  • New option to export (to VISOR module) the arbitrary cross-section with materials that have nonlinear properties (such as nonlinear stress-strain diagrams for concrete and reinforcement, creep diagrams). Nonlinear arbitrary cross-section may be saved to a separate file and used in VISOR module as a separate type of stiffness. After physically nonlinear analysis of bars with a nonstandard nonlinear cross-section, it is possible to transfer the calculated forces from VISOR module to the "Cross-section Design Toolkit" module.

Important. When such sections are used in FEA, the stiffness in shear and torsion should be calculated for them.

How to set parameters for nonlinear stress-strain diagrams of materials

How to set parameters for nonlinear stress-strain diagrams of materials

How to create an arbitrary cross-section with materials that have nonlinear properties; assign an arbitrary cross-section to nonlinear bars; carry out nonlinear analysis; evaluate the section state for the specified iterative physically nonlinear bar in VISOR module; export/import of cross-section, forces and evaluate the section state in

How to create an arbitrary cross-section with materials that have nonlinear properties; assign an arbitrary cross-section to nonlinear bars; carry out nonlinear analysis; evaluate the section state for the specified iterative physically nonlinear bar in VISOR module; export/import of cross-section, forces and evaluate the section state in "Cross-section Design Toolkit" module
  • New option to import the cross-section based on fire resistance data of elements from VISOR module to "Cross-section Design Toolkit" module, taking into account the change in nonlinear stress-strain diagrams for concrete and reinforcement under exposure of high-temperature according to DSTU-N B EN 1992-1-2:2012. 

Import of cross-section based on fire resistance data of elements according to DSTU-N B EN 1992-1-2:2012 from VISOR module to Cross-section Design Toolkit module

Import of cross-section based on fire resistance data of elements according to DSTU-N B EN 1992-1-2:2012 from VISOR module to "Cross-section Design Toolkit" module
  • When the table of output data at characteristic points of the cross-section is displayed on the drawing, it is possible to select the drawing sheet on which the table should be placed. It is also possible to select the font size and the option to have a table header. 

How to select the size of drawing sheet and set up the Characteristic Points table to be displayed on the drawing

How to select the size of drawing sheet and set up the "Characteristic points" table to be displayed on the drawing
  • The principal axes calculated in the "Cross-section Design Toolkit" module are now adjusted according to the principal axes in VISOR module and in the FEM solver. Thus, the Y1-axis now always corresponds to an axis with the largest moment of inertia.

  • The sign is inverted for the stresses that are computed from the bimoment.

Improvements to the "Bar Analogues" system

LIRA-SAPR 2024 R1 Last updated: Oct 15, 2025 14:47:04
  • Enhanced algorithm for determining the centre of the composed section of a bar analogue. Now offsets (in bars and plates) that generate the composed sections are taken into account.

  • Forces in bar analogues for problems with solids are computed more quickly.

Example. How to use the bar analogues

Example. How to use the bar analogues

Tools for evaluation of object properties and analysis results

LIRA-SAPR 2024 R1 Last updated: Oct 15, 2025 14:47:04
  • New modes for mosaic plots are implemented:

    • A group of mosaic plots to check and prepare documentation for the specified perfectly rigid bodies: mosaic plots for the number of instances for PRB that include a node (all slave nodes of the PRB should have a value 1 on the mosaic plot, master nodes of PRB should have values of 1, 2 or more); mosaic plots for the number of nodes in all PRBs that include a node; mosaic plot of PRB types.
    • A group of mosaic plots to check the loads applied to the model: mosaic plot for the number of identical loads applied to an individual node and/or element; mosaic plot for the number of loads applied to an individual node and/or element (the surface load is considered as one load); mosaic plot for loads with account of specified surface loads (uniformly distributed over the area) applied to the plates.

Mosaic plots to check the loads applied to the model

Mosaic plots to check the loads applied to the model
    • A group of mosaic plots for the percentage ratio of the reinforcement area of selected/specified longitudinal reinforcement along the X, Y and XY axis (total) to the cross-sectional area of the plate.

Mosaic plots for the percentage of the reinforcement area of the selected/specified longitudinal reinforcement

Mosaic plots for the percentage of the reinforcement area of the selected/specified longitudinal reinforcement
    • A group of mosaic plots for displaying and documenting the analysis results of reinforcement for bars with the type of reinforcement "Plastic wall" by SP RK EN 1998-1:2004/2012: mosaic plot for the product of confinement effectiveness factor and mechanical volumetric ratio of the confining reinforcement; mosaic plot for relative (normalized) axial force; mosaic plot for the length of boundary zone.
    • A group of mosaic plots for max and min thickness values of metal shapes.

Mosaic plot for max and min thickness values of metal shapes

Mosaic plot for max and min thickness values of metal shapes
    • Mosaic plots for elasticity moduli with account of defined coefficients E(E1)*kE, E2*kE , E3*kE.
    • Mosaic plot for groups of mass redistribution.
    • Mosaic plot for the max design compressive resistance of the soil along the Y1-axis.
    • Mosaic plot for the max design compressive resistance of the soil along the Z1-axis.
    • Mosaic plot for behaviour type of elastic foundation.
    • Mosaic plots/diagrams for lateral-torsional moments Tw.
    • Mosaic plots for plates with forces and stresses at nodes.
    • Mosaic plot for the elements for which the state of the sections will be analysed.

  • New tool to select iterative physically nonlinear elements in which the state of section should be computed in analysis. In the Time History Analysis, it is possible to define the integration steps at which the analysis results for section state will be displayed (mosaic plots for normal stress, relative strain in the main material and reinforcement for the certain plate or bar; tangential stress, relative shear strain, max stress, max relative strain in the main material for the certain plate). 

Computing the section state for iterative physically nonlinear elements in problems with Time History Analysis

Computing the section state for iterative physically nonlinear elements in problems with Time History Analysis
  • For the problems with Time History Analysis, you could generate graphs for the bimoment Bw (this moment will be computed only for the FE type 7 in problems with the model type 6) and the lateral-torsional moment Tw.

  • In the window with the output data from Pushover Analysis (monotonic increasing of horizontal earthquake load with check of horizontal displacement), there is a new option to generate a normative graph of the elastic spectrum.

Pushover analysis results (graph of load-carrying capacity spectrum, normative graph, normative graph of elastic spectrum)

Pushover analysis results (graph of load-carrying capacity spectrum, normative graph, normative graph of elastic spectrum)


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