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

Refer to Access the Model Files to download the required model file(s).

The model file used in this example includes:

bore_deformation_optimization.fem

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
Table 1. Bending Load
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
Table 2. Axial Load
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