VERSION HISTORY
LIRA-FEM

Cross-section Design Toolkit

Last updated: March 27, 2024
  • Optimised algorithm for calculating geometric properties with cross-sectional dimensions of tens of metres, for example, when calculating the stiffness centres of foundations.

  • Enhanced smoothing function for results obtained on a sparce triangulation mesh.

Evaluation for the state of cross-section in the "Cross-section Design Toolkit" module

Improvements to the "Cross-Section Design Toolkit" module

Last updated: Jan 05, 2024 16:37:41
  • 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.