Meshed Model

• Implemented automatic generation of a file recording the start and end time of each calculation stage. The file is saved in the working directory Result files under the name CalculationTime.log.
• Added the ability to rotate the model around the central point using Shift + wheel button (in addition to the right mouse button).
• Implemented command search within selected categories for assigning keyboard shortcuts. This allows faster access to required commands when configuring shortcut keys.

• Implemented a new type of load — load from covering weight (fire protection, icing, etc.). It is enough to specify density and thickness: the program automatically calculates the weight based on the cross-section geometry.

  When cross-sections change, the load can be updated. The load is applied as uniformly distributed along the length (for bars), over the area (for plates and faces of solid FEs).

• Implemented a tool for automatic load generation on a group of nodes and elements according to a specified formula dependency.

  It can be used, for example, when defining variable wind pressure by height, hydrostatic pressure in tanks, soil pressure on retaining walls, snow load on curved surfaces, as well as when modeling snow mound, etc.

• Added the ability to automatically generate icing load, as well as basement wall loads from soil using LIRA-CAD tools.
• Load generation commands in LIRA-CAD are now grouped.

• Added the ability to apply surface loads on plates and solid FEs in the local coordinate system of the element.
• Added the ability to copy loading simultaneously into several load cases.
• Added the ability to call the file explorer to select a file with the location of an accelerogram. This functionality is implemented in all dynamics modules where the corresponding controls are used.

• Implemented a tool for checking the design model to detect errors in geometry and topology, element properties, loads, and boundary conditions at the stage of creating the design model.

• Expanded functionality for determining the center of gravity (center of mass) and center of stiffness of a flat strictly horizontal fragment of the model (storey). Implemented selection of formulas for calculating moments of inertia of vertical elements. Added consideration of permissible deviation of elements from vertical and the ability to filter adjacent structures. Implemented output of a table with intermediate analysis results for separate groups of vertical elements.

• Added a command for automatic refinement of selected solid finite elements.
• Expanded functionality for discretizing an existing mesh of plate FEs: added splitting of plates into equal parts along local axes.

• Added new filter options (selecting nodes and/or elements on the model that meet specified selection criteria):

  • by orientation of finite elements along several directions;
  • by target plates of plate analogues;
  • by geometry (quality of plate triangulation mesh).
• Added consideration of kinematic links between nodes (perfectly rigid bodies and coupled DOF) when executing the command Select elements adjacent to selected nodes and elements.
• Added new functions simplifying preparation of input data for calculation of load on fragment. Lists can also be formed automatically based on fixed nodes (with restraints applied) and corresponding elements of the model.
• Added a command for synchronizing node and element selection, enabling synchronous select and unselect operations for nodes and elements of the model across all open windows of the current problem.
• Added the ability to save lists of configured scale ranges.
• In the mode of obtaining information about model elements during viewing or editing, the direction of the local coordinate system is now automatically displayed for the selected bar, plate, or solid finite element. This function simplifies control of element orientation.
• In the nonlinear load modeling dialog, an automatic collapse/expand tool for the nonlinear history tree has been added.
• In scale parameters, a Value comparison accuracy setting has been added, allowing refinement of range values for mosaic plots and contour plots of input data of the design model, results of static and dynamic analysis, as well as design results.
• Added the ability to hide selected grid lines and elevations, as well as disable incremental labeling of grid lines.

Note. In version 2026 R1, for unification purposes, FE types for plates have been merged: shell, slab, beam-wall rectangular FEs have been joined to quadrilateral FE types — 11, 15, 21, 23, 41, 45, 221, 223, 241, 245, 281, 341, 441 replaced by 19, 17, 30, 27, 44, 47, 230, 227, 244, 247, 284, 344, 444 respectively. Also, for wall-beams, to unify capabilities (use in models of type 1, 2, 4, 5), quadrilateral FEs 27, 227 have been merged and replaced by 30, 230 respectively, triangular FEs 22, 222 replaced by 24, 224 respectively.

• The Shape orthotropy tool, designed for calculating the stiffness matrix of structurally orthotropic plates of various configurations, has been supplemented with a new type — Slab (flat slab, convenient for quickly obtaining a stiffness matrix for further adjustment).
• The functionality for defining plate stiffness has been expanded: detailed assignment of coefficients (modifiers) for membrane stiffness (X, Y, XY), bending stiffness (X, Y, XY), and shear stiffness (XZ, YZ) with automatic recalculation of the stiffness matrix, including for orthotropic forms. Previously, only consolidated coefficients were used.

• Added automatic selection of the master node of an perfectly rigid body (PRB) according to specified criteria:
  • extreme nodes along axes (Min/Max X, Y, Z);
  • closest to the center of the group of selected nodes;
  • node of bar adjacency to plates.

• Added an option for releasing deflections at nodes selected on the model.
• In the Design options dialog, the ability to enable or disable punching shear analysis has been added.