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
New types of perfectly rigid body (PRB)
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New types of perfectly rigid bodies (PRBs) are added along the directions for degrees of freedom (DOF) in the system:
- All degrees of freedom;
- X, Y, Z, UX, UY, UZ;
- Z, UX, UY;
- Y, UX, UZ;
- X, UY, UZ;
- X, Y, UZ;
- X, Z, UY;
- Y, Z, UX;
- X, Y, UX, UY, UZ;
- X, Z, UX, UY, UZ;
- Y, Z, UX, UY, UZ.
Note.
Before the LIRA-SAPR 2024 R1 version of the structural analysis program, the PRB was only of type 1, "All degrees of freedom". This indicated that the slave and master nodes were connected by the same warping values (model type 6), with the exception of the kinematic restraints between X, Y, Z, UX, UY, and UZ.
Types of PRB