OS-E: 0885 Bore Distortion Responses
Topology optimization of a cylinder block with a bore will be performed. The cylinder block is modeled using first order solid (Hexa and Penta) elements.
Figure 1. FE Model with Loadcases and Loadstep
Model Files
Before you begin, copy the file(s) used in this example to
your working directory.
Model Description
A cylinder head with a bore, which is modeled using first order penta and hexa
elements and has two static loads are applied, axial and bending forces on one end
and constrain on the other end. The bore distortion is calculated for the 10th order
of the Fourier series. Volume, displacement, compliance and boredst responses are
created. Volume and compliance constrains are also defined for the responses.
- Objective
- Minimize the maximum bore distortion
- Constrains
- Minimize 30% of the volume and the compliance
- Design Variables
- Topology Design Variable
Results
Figure 2. Average Element Density of the Optimized Model
| Z-Depth | Order 0 | Order 1 | Order 2 | |||
|---|---|---|---|---|---|---|
| Baseline | Final | Baseline | Final | Baseline | Final | |
| 0 | -2.73E-05 | -2.84E-03 | 3.99E-02 | 3.43E-02 | 1.87E-02 | 3.41E-02 |
| 5 | -2.67E-05 | -3.54E-03 | 4.00E-02 | 3.39E-02 | 1.83E-02 | 3.43E-02 |
| 10 | -2.73E-05 | -2.83E-03 | 3.99E-02 | 3.43E-02 | 1.87E-02 | 3.41E-02 |
| Z-Depth | Order 0 | Order 1 | Order 2 | |||
|---|---|---|---|---|---|---|
| Baseline | Final | Baseline | Final | Baseline | Final | |
| 0 | -1.79E-03 | 2.07E-02 | 1.14E-02 | 2.27E-03 | 1.10E-02 | 3.42E-02 |
| 5 | -1.79E-03 | 2.09E-02 | 1.14E-02 | 2.63E-03 | 1.08E-02 | 3.43E-02 |
| 10 | -1.79E-03 | 2.07E-02 | 1.14E-02 | 2.28E-03 | 1.10E-02 | 3.42E-02 |