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Big and small blade integral leaf disc structural integrity fluid-solid coupling integrated design method

A technology of structural integrity and integral blisks, which is applied in computing, special data processing applications, instruments, etc., can solve the problems of low structural reliability of large and small blade blisks and great influence on aerodynamic characteristics, and achieve high reliability, small effect

Inactive Publication Date: 2008-04-09
BEIHANG UNIV
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Problems solved by technology

[0005] The aerodynamic design and the structural integrity design are separately carried out, and the interdependence between the aerodynamic design and the structural integrity design in the same coupling system is artificially separated, resulting in a large influence of the structural geometry on the aerodynamic characteristics. lower sex

Method used

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  • Big and small blade integral leaf disc structural integrity fluid-solid coupling integrated design method
  • Big and small blade integral leaf disc structural integrity fluid-solid coupling integrated design method

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Embodiment Construction

[0018] The integrated fluid-solid coupling design method for the structural integrity of large and small blades of the present invention is shown in Figure 2, including:

[0019] Step 1. Carry out digitalization of the fluid-solid interface and digital modeling of the structure, specifically including the quantitative relationship between the size of the structural digital grid on the interface and the size of the fluid grid; Quantitative relationship of geometric dimensions; Quantitative relationship of structural digital grid for vibration design and overall geometric dimensions of large blades and small blades; Quantitative tailoring relationship of aerodynamic design cascade dimensions for structural design modeling.

[0020] The digital modeling of the fluid-solid interface can be performed first; then the digital modeling of the structure can be performed according to the digital modeling of the fluid-solid interface and the parameters of the gas acting on the structure. ...

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Abstract

The invention discloses a design method for the fluid-solid coupled integration of the structure integrity of a large-small leaf integral blisk. Firstly, digitalization models of a fluid-solid interface and a structure are constructed; then, the design of structure integrity is accomplished based on the constructed models. The method includes the two cyclic designs: one is the cyclic design between aerodynamics and the structure integrity; the other is the integration cyclic design of various aspects (strength and vibration etc.) of the structure integrity itself. The invention realizes the aerodynamics-structure integration design of the structure integrity of the integral blisk, and enhances the design quality and the use security and reliability.

Description

technical field [0001] The invention relates to a turbine design technology, in particular to a fluid-solid coupling integrated design method for the overall blisk structure integrity of large and small blades. Background technique [0002] At present, the blisk rotors of axial flow compressors with large and small blades mostly adopt the integral blisk structure. Due to the overall blisk structure of the large and small blades, the blades are generally arranged alternately along the circumferential direction, and each There may be more complex and flexible interrelationships between large and small blades, so the evaluation and design of their structural integrity cannot be achieved by conventional design methods, especially those based on fluid, centrifugal force field and other various excitation forces Design for integrity (strength, stiffness and vibration). [0003] As shown in Figure 1, in the prior art, the design method of the structural integrity of the blisk is b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50
Inventor 王建军李其汉陈懋章
Owner BEIHANG UNIV
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