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Lightweight design and static analysis of lattice compressor impeller
Yuan Zhang1, Fanchun Li2, Dejun Jia1
1Dalian Maritime University, 1 Linghai, Hightech Zone, Dalian, 116026, Liaoning, People's Republic of China.
Scientific Reports
|October 28, 2020
Summary
Researchers designed a novel lattice-filled impeller for compressors, achieving significant weight reduction and adjustable stiffness. This lightweight design improves compressor efficiency while maintaining structural integrity at high speeds.
Area of Science:
- Mechanical Engineering
- Aerospace Engineering
- Materials Science
Background:
- Compressor impellers are critical components in gas turbines and other machinery.
- Lightweighting is a key objective in impeller design to improve performance and reduce energy consumption.
- Traditional solid impeller designs face limitations in balancing weight, strength, and stiffness.
Purpose of the Study:
- To design and analyze a novel lattice-filled impeller cell for rotating periodic symmetric structures.
- To achieve adjustable rigidity and strength while reducing impeller mass.
- To evaluate the performance of lattice-filled impellers compared to solid and unfilled designs.
Main Methods:
- Design of a lattice-filled lattice cell suitable for rotating periodic symmetric structures.
- Comparative analysis of unfilled, solid, and lattice-filled impellers under limit conditions (80,000 r/min).
- Evaluation of circumferential deformation and weight reduction for different lattice beam diameters.
Main Results:
- Lattice impellers exhibited reduced average circumferential tip deformation: 4.84% (0.2mm beam), 3.49% (0.4mm beam), and 3.71% (1mm beam) lower than solid impellers.
- A lattice impeller with a 0.4mm beam diameter achieved a 22.68% weight reduction compared to a solid impeller.
- Circumferential deformation of lattice impellers was between unfilled and solid impeller values.
Conclusions:
- Lattice-filled impellers offer an effective solution for significant weight reduction in compressor components.
- The designed lattice structure allows for adjustable stiffness and strength, meeting design requirements.
- This lightweighting approach enhances compressor efficiency and performance.
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