# OS-E: 0200 Beam Bending

A comparison study of the bending of a straight cantilever beam modeled using shell elements in OptiStruct Nonlinear transient dynamic analysis with the Radioss Explicit Solution.

## Model Files

Before you begin, copy the file(s) used in this example to
your working directory.

## Model Description

This example has a simple cantilever beam with an end moment. The moment variation is modeled by introducing a constant imposed velocity on the free end. The moment is applied on a rigid body created at one end of the beam and on the other end all the DOF’s are blocked.

The FE Model properties are:

- Shell Elements
- First order Quad elements

The linear isotropic material properties are:

**Property****Value**- Young's Modulus
- 1000 MPa
- Poisson's Ratio
- 0
- Initial Density
- 0.01 g/mm
^{3} - Reference Density
- 0.01 g/mm
^{3}

## Results

Figure 4 shows the comparison of OptiStruct
and Radioss results for Displacement (deflection) of the
beam at time 1605 seconds. The wire-mesh shows the un-deformed position at time 0
seconds.