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Particle damping vibration attenuation design method for umbrella-type vibration of wheel structure

A particle damping and design method technology, applied in computing, special data processing applications, instruments, etc., can solve problems such as high corresponding frequency, many influencing factors of particle damping, complex shape, etc.

Inactive Publication Date: 2013-12-25
BEIHANG UNIV
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Problems solved by technology

For the actual wheel body mechanism, due to the complex shape, although there is an umbrella-shaped vibration similar to the first-order vibration of the cantilever beam, its corresponding frequency is high, the structural response acceleration is large, and there are many factors affecting the particle damping, which is highly nonlinear. A good particle damper design is obtained purely through numerical simulation or experimentation, so the application of particle damping to practical structures is seldom

Method used

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  • Particle damping vibration attenuation design method for umbrella-type vibration of wheel structure
  • Particle damping vibration attenuation design method for umbrella-type vibration of wheel structure
  • Particle damping vibration attenuation design method for umbrella-type vibration of wheel structure

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Embodiment Construction

[0071] see image 3 The present invention is a particle damping design method for umbrella-shaped vibration of wheel structure. The specific steps are as follows:

[0072] Step 1: Build a solid model of the wheel body

[0073] Establish a finite element model of the target wheel in the CAE pre-processing software for the given entity model;

[0074] Step 2: Perform structural analysis on the established finite element model

[0075] First, import the established finite element model into the finite element software ANSYS, define the corresponding material parameters, given the speed and displacement constraints, and obtain the structural stress distribution caused by the centrifugal force through static analysis. Pay attention to the main stress of the wheel structure The location and level of the concentration point, the stress level of the wheel flange;

[0076] Secondly, the modal analysis of mass normalization is adopted to obtain the natural vibration characteristics of the wheel ...

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Abstract

The invention relates to a particle damping vibration attenuation design method for umbrella-type vibration of a wheel structure. The design method includes filling scheme design and position scheme design of a damper and totally includes eight steps. In the filling scheme design, based on wheel structure vibration characteristics obtained by finite element analysis, a designed orthogonal experiment scheme is simulated by the aid of a particle damping discrete metaprogram to obtain key impact factors of particle damping, and the best filling scheme of the damper is determined according to change rules of particle damping. In the position scheme design, the best position scheme for mounting the particle damper is determined according to distribution characteristics of umbrella-type vibration response and impact rules of particles with different materials and different particle sizes under the condition of different non-dimensional accelerations gamma on particle damping. Effectiveness of the method is verified by experiments, and the method has a fine practical value and a wide application prospect in the field of application of particle damping to complicated structures.

Description

Technical field [0001] The invention belongs to the technical field of vibration reliability of a rotor structure, and specifically relates to a particle damping vibration reduction design method aimed at umbrella-shaped vibration of a wheel structure. [0002] The invention belongs to the technical field of vibration reliability of a rotor structure, and specifically relates to a method for damping a wheel structure by using a particle damper. Background technique [0003] During the development and use of the wheel structure, vibration problems are difficult to avoid, and failures caused by vibration occur from time to time. Due to the low frequency of umbrella vibration and pitch circle vibration of the wheel structure, the low frequency excitation force can excite resonance, so it is easy to appear in the verification test. In addition to the high temperature environment, some rotor components in modern aero-engines also have large centrifugal loads. Under these extremely hars...

Claims

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Application Information

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IPC IPC(8): G06F17/50
Inventor 王延荣刘彬
Owner BEIHANG UNIV
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