VERSION HISTORY
LIRA-FEM
- Mass redistribution
- Damping ratio
- Seismic isolators
- Pushover Analysis
- Finite element "Joint"
- New types of perfectly rigid body (PRB)
- Nonlinear behaviour of soil
- New type of force
- Nonlinear custom cross-sections
- Accounting for orthotropy
- Analysis parameters
- Analysis of reactions
- Stresses and forces
- Dynamics
- Nonlinearity
- Finite elements
- Calculation and Performance
Documentation
-
Added the command Create link for selected input table or group of input tables in the Report Book.
The command allows adding any input table to the Report Book and typesetting it within a single
*.docxfile with unified page, figure, and table numbering, as well as automatic table of contents generation.
- Implemented the ability to simultaneously delete, copy, cut, and paste multiple elements of documentation templates.
- For new graphic elements (stress–strain graphs, deformation–force, reactions, and others), a snapshot option has been implemented as an interactive screen copy.
-
In LIRA-CAD, the ability to create MP4 videos using the H.264 codec in FullHD and 4K resolution, as well as H.265 in 8K resolution, has been integrated.
Immediately after creation, the video opens in the video player.
This feature is available both in the previous Camera Path function and in the new simplified mode: just save several camera positions in any 3D view, then use the context menu command Camera Animation to obtain a video file.
When creating the video file, options can be selected: smooth start and finish, closed trajectory, smoothed trajectory, dynamic objects.
When the smoothed trajectory option is selected, the camera and viewpoint reference point move along a smooth spatial curve obtained by interpolation between key points using Catmull–Rom spline algorithms.
Available resolutions: FullHD, 4K, and 8K. Hardware anti-aliasing with 4 or 8 samples for maximum smoothness without performance loss. Frame rate — 30 or 60 fps. Three levels of packing density affecting file size and image quality.
- Implemented the option to add measurement units for interactive copies with mosaics / isofields / diagrams of input data and calculation results for the figure name in the Report Book.
- Added a label on the icon of the interactive screen copy in the Report Book showing the time and date of snapshot creation/update.
- Added the Add Section option to the Report Book context menu. A section is a folder that can store other elements of the Report Book.
Documentation improvements
- In problems with time history analysis, the option to document analysis results in tabular format for selected integration steps has been implemented.
- The option to use an extreme force filter has been added for cases when a structural element consists of a single finite element.
- On the Errors and Warnings tab of the results tables for analysis of steel structures, a separate column has been added listing the element numbers.
- In LIRA-FEM 2025, support for Interactive Tables, the BRIDGE system tables, and the Report (old format) has been discontinued. In the current version, these commands have been removed from the ribbon interface, although they can still be launched via the WINDOW menu.
Documentation improvements
New option to define the format for numbers and fonts on graphs of time history analysis results (displacements, forces, loads on a fragment, loads on a group of partitions, nodal response spectrum).
New tables of results Heat flow by load cases are provided for problems with steady heat transfer analysis and transient heat transfer analysis.
New option to prepare documentation for interactive screen copies of design model for all new mosaic plots and graphs; expanded tables with the input data and analysis results.
Documentation
-
A new option to select colour settings for interactive screenshots that are added to the Report Book. Either current colour settings or the default White colour standard may be applied.
Moreover, it is now possible to customize the option "Return to view / Update with current colour settings or with colour settings saved in the screenshot".
This option is helpful, for example, when you prepare screenshots for printing if they were taken with a background other than white or the colour standard Black. To do this, before you save the
*.docxfile, in the document window, apply the colour, format for numbers and font settings and then update with current settings.Note.
An interactive screen copy of the design model window, or, in short, a window screen shot, is an image of the design model with associated data, namely, the settings of the design model image and the data for updating this image. Unlike a regular image, a window screen shot may be updated if the design model or its analysis results change.
-
New option to organise the data in two columns in the "Metal elements (selection)" table. Now it is possible to sort (initially) the data in one column (in ascending/descending order), and then additional sorting by one of the columns - "groups of properties for subheading /element/ Unification group of element, structural element / selected section" (from A to Z/in ascending/descending order). In this case, the order of rows defined initially is saved.
-
The "Structural element" column is added to the tables DCF and DCL characteristic (design, design long-term, normative, normative long-term). When appropriate check box is selected, the names of structural elements are displayed in the filter settings, so you could easly organise the data by this parameter.
Improvements to documentation
-
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.
-
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
-
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.
-
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.
-
The tables of input and output data contain new data.







