Method for manufacturing damping structural piece of aviation engine supporting system

A technology of aero-engine and damping structure, applied in the direction of high internal friction spring, etc., can solve the problems of insufficient bearing capacity, slow response, etc., and achieve the effect of regular structure

Inactive Publication Date: 2012-08-22
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, no material is perfect. The existing shape memory alloy materials used in the damping structural parts of the aero-engine support system have the disadvantages of insufficient bearing capacity and slow response.

Method used

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  • Method for manufacturing damping structural piece of aviation engine supporting system
  • Method for manufacturing damping structural piece of aviation engine supporting system
  • Method for manufacturing damping structural piece of aviation engine supporting system

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0046] A Ti-50.3% Ni shape memory alloy wire is used to prepare an aero-engine rotor support damping structure (or metal rubber) with shape memory effect and variable stiffness performance. The damping structure is in the shape of a column, such as Figure 4 , Figure 5 As shown, the mold for making the damping structure is as follows Figure 2C , Figure 2D , Figure 2E shown.

[0047] Step 1: Wind the Ti-50.3%Ni shape memory alloy wire into a memory alloy spring wire; the processing temperature is 26°C; the wire diameter of the Ti-50.3%Ni shape memory alloy wire is 0.2mm; it is made on the spring making equipment The memory alloy spring wire has a pitch of 0, a helix diameter of 1.4mm, and a single length of 60cm.

[0048] Step 2: Pre-heat-setting the memory alloy spring wire to obtain a spring wire preform; the pre-heat-setting temperature is 500° C., and the pre-heat-setting time is 5 minutes.

[0049] Step 3: Stretch, wind and cold mold the spring wire preform to ob...

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Abstract

The invention discloses a method for manufacturing a damping structural piece of an aviation engine supporting system; a shape memorizing alloy wire is manufactured into metal rubber through the combined processes of manufacturing an elastic wire at low temperature, heat setting, winding and full-constraint heat setting; and the damping structural piece which is manufactured through the method has a shape memorizing effect and a variable rigidity characteristic. According to the method for manufacturing the damping structural piece of the aviation engine supporting system, a damping material in the metal rubber structure is integrated with a shape memorizing alloy, and a novel metal structural functional material with the advantages of the metal rubber and the shape memorizing alloy is developed. The material has good damping performance, high deformation capability and high bearing capability, and has the advantages of active and controllable elastic modulus, strong environment adaptability and stable and reliable structure. Because the advantages of the metal rubber and the shape memorizing alloy are integrated, the method can be applied in aviation engine rotor supporting and a non-peak rotor can be realized.

Description

technical field [0001] The present invention relates to a method for preparing a damping structure, more particularly, a method for preparing a damping structure suitable for an aeroengine support system. The damping structure prepared by the method of the invention has shape memory effect and variable stiffness characteristics. Background technique [0002] The damping structure applied to the support system of the aero-engine changes the support stiffness of the aero-engine rotor system through its special variable stiffness characteristics on the one hand, thereby avoiding rotor resonance; on the other hand, it dissipates the vibration energy of the rotor support system through its damping, thereby Dampens rotor vibration response. [0003] In the development and use of modern industrial machinery, the vibration problem directly affects the reliability, safety and performance of the equipment, so it is of great practical significance to take appropriate vibration control...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16F3/12
Inventor 张大义马艳红刘宝龙陈璐璐洪杰
Owner BEIHANG UNIV
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