Elements With Beam Section Physical Properties

The following elements should be assigned beam section properties defined using the PIPE, BOX, USEC, or TSEC property type (see FEMGV Version 2 User Manual for details).

CBAR

For example the following FEMGEN commands

PROPERTY PHYSICAL BOX PH1 10 8 1 2
PROPERTY PHYSICAL BOX PH1 ORIENT 0 0 1

Would produce the following LR.STRAND cards:

$ TYPE        ID   IPROP       GRID POINTS ...
CBAR           1       1       1       2     0.0      1.     0.0       1
CBARAO         1      FR     0.2     0.4     0.6     0.8
.           .            .
.           .            .
.           .            .
$ PH1      IPROP    IMAT
PBAR           1       1     44. 558.667 318.667 545.391
+             5.      4.     -5.      4.      5.     -4.     -5.     -4.
+        .272727 .727273

LR.STRAND uses a local y direction to define beam orientation whereas FEMGEN uses a local z for both definition and display. LR.STRAND users should define beam orientations using the normal FEMGEN conventions (ie the z); the interface program automatically transforms this information into a form suitable for LR.STRAND. The interface program calculates the shear coefficients on card 3.