Tester for testing rub-impact forces of vanes and casings under complex contact conditions
A rubbing force and tester technology, applied in force/torque/power measuring instruments, instruments, measuring devices, etc., can solve the problem of the relationship between the magnitude and direction of the rubbing force, the influencing factors of the rubbing force and the The law of its influence is not clear, and it is difficult to explore the law of rubbing and rubbing to solve the rubbing problem.
Active Publication Date: 2018-12-28
BEIHANG UNIV
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Problems solved by technology
However, the existing rubbing tester does not have the function of changing the key factors such as rubbing intrusion, blade stiffness, blade installation angle, blade and casing material, casing surface state, casing radial stiffness, and cannot restore the complete The relationship between the magnitude and direction of the friction force and the change with time
This makes the influencing factors and the law of rubbing force unclear, which brings great difficulties to explore the law of rubbing and solve the problem of rubbing in engineering.
Method used
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[0021] The present disclosure will be further described in detail below with reference to the drawings and embodiments. It can be understood that the specific implementation manners described here are only used to explain relevant content, rather than to limit the present disclosure. It should also be noted that, for ease of description, only parts related to the present disclosure are shown in the drawings.
[0022] It should be noted that, in the case of no conflict, the implementation modes and the features in the implementation modes in the present disclosure can be combined with each other. The present disclosure will be described in detail below with reference to the drawings and embodiments.
[0023] The disclosure provides a blade-casing rubbing force tester, which is especially suitable for studying the rubbing of engine blades and engine casings with a honeycomb structure, that is, "complex contact state" "Then touch and rub.
[0024] In at least one embodiment of...
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The invention discloses a tester for testing rub-impact forces of vanes and a casings under complex contact conditions, comprising a swing arm, vane simulators, casing simulators, a force testing device. Wherein a shaft is arranged on one end of the swing arm; the swing arm can swing around the shaft; the vane simulators are arranged on the other end of the swing arm; the casing simulators are arranged under the swing arm; the vane simulators can be rubbed against the casing simulators during the swinging process of the swing arm; the force testing device is arranged under the casing simulators for testing the rub-impact forces generated during the rubbing process.
Description
technical field [0001] The disclosure relates to a blade-casing rubbing force tester. Background technique [0002] Rubbing often occurs between the rotor and stator of rotating machinery. In an aero-engine, due to the need for aerodynamic efficiency, the gap between the blade and the casing is usually very small, and friction between the blade and the casing often occurs due to various harsh working conditions during the working process. Designing a rubbing tester that can explore the influence law of the blade-casing rubbing force is of great significance for theoretically exploring the law of rubbing influence and solving practical engineering problems. [0003] The honeycomb structure is a special structure that is often used inside the aero-engine case. Aeroengine blades have very obvious discontinuous characteristics when rubbing against them, which is called "complex contact state". This makes the research on the rubbing rule more complicated. [0004] The rubbing...
Claims
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IPC IPC(8): G01L5/00
CPCG01L5/00
Inventor 张大义徐浩马艳红洪杰于平超
Owner BEIHANG UNIV