A preliminary design method for axisymmetric turbomachinery disks based on topology optimization

Abstract

The topology optimization can be used to obtain preliminary turbomachinery disk designs which meet strength requirement. In order to eliminate enclosed holes which challenge manufacturing processes and to ensure distinct solid-void interface in the optimal result obtained by the topology optimization, a density distribution function is introduced for each element column in the design domain. Then, a parameter in each function is used to determine the disk’s thickness at corresponding radial position by controlling element densities. Once thicknesses at all radial positions are optimized, the shape of disk is thus determined. In this way, the optimization problem can be simplified by using these parameters as design variables. Illustrative examples are carried out to demonstrate the effectiveness of the proposed method in designing both compressor disks and turbine disks in comparison to the software T-Axis Disk and shape optimization method.

Improving Aeromechanical Performance of Compressor Rotor Blisk with Topology Optimization

“…The numerical methodology was applied to a transonic aeronautical compressor rotor blisk designed and tested at the TUD (Technische Universität Darmstadt) during the EU FUTURE project dedicated to aerodynamically induced blade vibrations. The rotor is included within a 1 and ½ axial stage, composed by a variable IGV, a rotor, and a stator row consisting of 15, 21, and 29 blades, respectively [28][29][30]. The meridional cut of the test case is reported in Figure 2 where the rotor blisk is highlighted in red.…”

A New Strategy for Railway Bogie Frame Designing Combining Structural–Topological Optimization and Sensitivity Analysis

“…A high-performance chassis design of an automotive vehicle body has been innovated using topological optimization [3]. Similar approaches have been used to improve the design procedure for turbomachinery components, especially if combined with additive manufacturing techniques [4][5][6][7][8]. Referring to railway applications, the anchor bracket has been redesigned by taking advantage of a topology optimization process and introducing composite materials [9].…”