# OS-V: 0040 Z-Section Cantilever

Test No. LE5 OptiStruct examines the axial (x-x) stress (compression) at mid-surface, point A for linear static analysis.

## Model Files

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

## Benchmark Model

Quad4 and Quad8 elements are used to create a uniform mesh of 8 elements along the length with one element across width of flange. All the displacements at one end are maintained zero, at the other end two uniformly distributed force of 0.6M N each are applied.

The material properties are:

**Material Properties****Value**- Young's Modulus
- 210 x 10
^{3}MPa - Poisson's Ratio
- 0.3

## Linear Static Analysis Results

All results are normalized with the target value (-108 MPa Compression).

Quadrilateral Shells | Axial Stress (x-x) at Mid-surface Point A (MPa) | Normalized with the Target Value |
---|---|---|

Quad4 | -112.2 | 0.962566845 |

Quad8 | -110.9 | 0.973850316 |

## Reference

NAFEMS R0015 - Selected benchmarks for natural frequency analysis