**Picture
1. **Wireframe of a section of the compressor. The outer diameter
is 87 mm.

**Picture
2. **Deformation due to 110000/min of rotational speed. The
amplification factor is set to 20.

**Picture
3. **Von Mises stress due to 110000/min rotational speed.
Plastification is considered. The peak stress in the bore is with 310
MPa slightly above yield stress. With that value crack-initiation
will probably occur after 2000 start-stop cycles. The values along
the blade-root are uncertain because the fillet-radius is not
modeled.

**Picture
4. **Increase in diameter vs. rotational speed. Burst will occur at
about 170000/min. This is equivalent to a tip-speed of 775 m/s.

**Picture
5. **Equivalent plastification at the last converging time-step of
the burst calculation at about 169000/min.

**Picture
6. **Frequency diagram of the compressor-blades. Resonances with
the vanes can not be avoided.

**Picture
7. **Modeshape of the lowest trailing edge mode (TE-5ND) and
probably the most sensitive mode stimulated by the 19 vanes. For this calculation the cyclic symmetry capabillity of CalculiX was used.

Click HERE to see more about the finite element and graphic capabilities of CALCULIX

PrivacyPolicy

Legal Disclosure