Optimum Design of Rotational Wheels Under Transient Thermal and Centrifugal Loading

• HATTORI Toshio

  Mech. Eng. Res. Lab., Hitachi Ltd.,

• OHNISHI Hiroo

  Mech. Eng. Res. Lab., Hitachi Ltd.,

抄録

Turbine rotors and compressor rotors are subject to centrifugal and thermal loads. These loads increase proportionally with tip speed and gas temperature. Additionally, rotor weight must be decreased to improve rotor dynamics and to restrict bearing load. Thus, an optimum design technique which offers the lightest possible wheel shape under the stress-limit restriction is required. This paper introduces an optimum design system developed for turbomachinery rotors, and discusses several applications. The sequential linear programming method is used in the optimizing process, and unsteady state thermal analyses of variable thickness wheels are performed using a numerical analysis of a multiring model. Centrifugal and thermal stress analyses of these wheels are performed using Donath's method with the same multiring model. This optimum design program is applied to the design of axial flow compressor wheels. Finally, the validity of these applied results are confirmed by transient thermal and stress analyses using the finite element method.

収録刊行物

• JSME international journal. Ser. 3, Vibration, control engineering, engineering for industry

  JSME international journal. Ser. 3, Vibration, control engineering, engineering for industry 32 (4), 597-605, 1989-12-15

  一般社団法人日本機械学会

キーワード

• Strength of Materials
• Thermal Conduction
• Numerical Analysis
• Design ,Engineering
• Optimum Design ,Sequential Linear Programming
• Donath's Method
• Heat Transfer
• Rotational Wheel
• Turbo-machinery Rotor

詳細情報

• CRID: 1572261551978864128
• NII論文ID: 110002505185
• NII書誌ID: AA10680610
• ISSN: 09148825
• 本文言語コード: en
• データソース種別:
  • CiNii Articles