Using generated cross-section properties in a beam analysis

This problem contains basic test cases for one or more Abaqus elements and features.

This page discusses:

Elements tested
Features tested
Problem description
Results and discussion
Input files

ProductsAbaqus/StandardAbaqus/Explicit

Elements tested

B21

B22

B31

B32

Features tested

The cross-section properties generated and stored in the jobname.bsp text files from the previous section, Meshing and analyzing a two-dimensional model of a beam cross-section, are used in beam analyses to define stiffness and inertia properties for beam elements. The arbitrarily shaped solid general beam cross section meshed with warping elements option is used to assign the precalculated stiffness and inertia properties to the beam elements. The results obtained for the meshed section beams are verified by comparing them with results obtained for beams using a linear generalized cross section that are assigned stiffness and inertia properties identical to those of the meshed beams. Dynamic analyses are performed in both Abaqus/Standard and Abaqus/Explicit. Static and frequency extraction analyses are also performed in Abaqus/Standard. The use of beams with additional inertia and additional fluid inertia to modify the inertia properties defined for the meshed beams in the jobname.bsp text files is also tested.

Problem description

Model:

The model comprises a single cantilevered beam subjected to a concentrated load at its tip. The load is applied as a step load resulting in significant dynamic motion of the beam.

Results and discussion

The beam responses obtained using the arbitrarily shaped solid general beam cross section meshed with warping elements option are identical to the beam responses obtained using a linear generalized cross section. For the same model, the results from a dynamic analysis in Abaqus/Standard agree well with the results from a dynamic analysis in Abaqus/Explicit.

Input files

xbgs_meshedcsect_std.inp: Meshed beams with C-section; comparison of meshed and general section beams; dynamic analysis in Abaqus/Standard.
xbgs_meshedcsect_warpf2d4_std.inp: Meshed beams with C-section; 3-DOF warping elements; comparison of meshed and general section beams; dynamic analysis in Abaqus/Standard.
xbgs_meshedcsect_xpl.inp: Meshed beams with C-section; comparison of meshed and general section beams; dynamic analysis in Abaqus/Explicit.
xbgs_meshedisectiso_std.inp: Meshed beams with I-section; comparison of meshed and general section beams; dynamic analysis in Abaqus/Standard.
xbgs_meshedisectiso_xpl.inp: Meshed beams with I-section; comparison of meshed and general section beams; dynamic analysis in Abaqus/Explicit.
xbgs_meshedisectortho_std.inp: Meshed beams with I-section; composite elastic material; comparison of meshed and general section beams; dynamic analysis in Abaqus/Standard.
xbgs_meshedisectortho_xpl.inp: Meshed beams with I-section; composite elastic material; comparison of meshed and general section beams; dynamic analysis in Abaqus/Explicit.
xbgs_meshedisectoffset_std.inp: Meshed beams with I-section; centroid offset from reference node; comparison of meshed and general section beams; dynamic analysis in Abaqus/Standard.
xbgs_meshedisectoffset_xpl.inp: Meshed beams with I-section; centroid offset from reference node; comparison of meshed and general section beams; dynamic analysis in Abaqus/Explicit.
xbgs2d_meshedisectortho_std.inp: Two-dimensional meshed beams with I-section; composite elastic material; comparison of meshed and general section beams; dynamic analysis in Abaqus/Standard.
xbgs2d_meshedisectortho_xpl.inp: Two-dimensional meshed beams with I-section; composite elastic material; comparison of meshed and general section beams; dynamic analysis in Abaqus/Explicit.
xbgs_meshedrectsect_freq.inp: Meshed beams with rectangular section; comparison of meshed and general section beams; frequency extraction in Abaqus/Standard.
b31_i_bai_meshed.inp: Beam added inertia with meshed beams in Abaqus/Standard.
xbgs_meshedbai_xpl.inp: Beam added inertia with meshed beams in Abaqus/Explicit.
xbgs_meshedbfi_xpl.inp: Beam fluid inertia with meshed beams in Abaqus/Explicit.