Table of Contents
TRUSS
Description
Plane truss bar.
The element is rectilinear between 2 nodes (I,J). These nodes define the local axis 1; local axis 2 forms an orthonormal basis with local axis 1 and the axis perpendicular to the TRUSS plane.
The TRUSS element can only be used with law ELA-TR.
Element type: 7
Implemented by: I. Bertarini (1988)
Files
Prepro: TRUSSA.F
Lagamine: TRUSSB.F
Input file
| Title (A5) | |
|---|---|
| TITLE | “TRUSS” in columns 1 to 5 |
| Control data (3I5) | |
| NELEM | Number of elements |
| NDISL | Number of groups of distributed loads to define |
| INSIG | 0 if no initial stresses 1 if initial stresses |
| Distributed loads - Only if NDISL ≠ 0 (2I5, G10.0) | |
| LCHAD | Number of the distributed load (from 1 to NDISL) |
| KODED | Index of direction of the distributed load: = 1 load distributed along global axis x = 2 load distributed along global axis y = 3 load distributed along local axis 1 = 4 load distributed along local axis 2 |
| DISFO | Intensity of the distributed load |
| Initial stresses - Only if INSIG ≠ 0 (G10.0) | |
| SIGO | Initial stress $\sigma_0$ (along x axis) |
| Definition of the elements (I5, G10.0, I5/4I5) | |
| LMATE | Material |
| NLOAD | Number of distributed loads applied |
| NODES(2) | List of nodes |
| Loads applied to the element - if NLOAD ≠ 0 (14I5) | |
| ICHAD(I) I=1,NLOAD | Number of the distributed loads |
Note: The distributed loads stay constant, they are not multiplied by FMULT.
Results
The normal effort in the bar.