VERSION HISTORY
LIRA-FEM

Modifying of DCL forces

Last updated: Jan 08, 2024 11:09:15
  • A new option to modify DCL forces and stresses for bars and plates according to a set of rules:

    • 0 - all values of the selected forces are replaced with zero values; 
    • ZERO - values of selected forces, the absolute value of which is less than defined parameter e, are replaced with zero values;
    • FACTOR - all force values for the selected elements are multiplied by the specified parameter k;
    • AFORM - the diagram of values for the selected forces is transformed to rectangular at the bottom and trapezoidal at the top;
    • LFORM - the diagram of values for the selected forces is transformed to trapezoidal at the bottom and rectangular at the top;
    • HFORM - the value at the beginning of the selected force diagram is multiplied by the value of the parameter beg, at the end of the diagram - by the value of the parameter end, other values of the diagram - by the values of the parameter mid.

With the help of this set, it is possible to calculate a single DCL table by considering the rules for modifying the forces for the analysis of plastic walls and assigning responsibility coefficients to every element in the model. In terms of the minimum load-bearing capability of certain structures, it is also quite a flexible tool for putting the provisions of various building codes into practice.

Important.

The forces are corrected in the design sections of the elements that are used in the design procedure.

Modifying the forces after analysis

Modifying the forces after analysis
Example. How to modify the forces for analysis of plastic wall

Example. How to modify the forces for analysis of plastic wall