含呼吸式裂纹的失谐叶盘系统响应特性研究

中国机械工程 ›› 2013, Vol. 24 ›› Issue (02): 169-174.

含呼吸式裂纹的失谐叶盘系统响应特性研究

王艾伦;李帅

中南大学高性能复杂制造国家重点实验室,长沙,410083

出版日期:2013-01-25 发布日期:2013-02-01
基金资助:
国家重点基础研究发展计划（973计划）资助项目（2007CB707706）
National Program on Key Basic Research Project (973 Program)（No. 2007CB707706）

Forced Response Characteristics of Mistuned Bladed Disk with Breathing Crack

Wang Ailun;Li Shuai

State Key Laboratory of High Performance and Complex Manufacturing,Central South University,Changsha,410083

Online:2013-01-25 Published:2013-02-01
Supported by:
National Program on Key Basic Research Project (973 Program)（No. 2007CB707706）

摘要/Abstract

摘要：

含张开式裂纹的叶盘系统无法准确地反映其受迫振动响应特性,为此,基于细梁理论和线弹性断裂力学理论建立了含呼吸式裂纹的失谐叶盘系统数学模型，对比分析了呼吸式裂纹、张开式裂纹对失谐叶盘系统固有特性和振动响应的影响，揭示了呼吸式裂纹对叶盘系统振动响应局部化的影响规律。研究表明:呼吸式裂纹使得振动响应呈现复杂的非线性特征;此外，与张开式裂纹模型相比，基于呼吸式裂纹模型的叶盘系统对失谐更敏感。


关键词: 呼吸式裂纹, 张开式裂纹, 叶盘系统, 非线性的, 振动响应局部化

Abstract:

The assumption of bladed disk with open cracks is
unrealistical and inaccurate for analyzing the vibration response of bladed disk,
so a model of bladed disk with breathing cracks was established based on the Euler-Bernoulli beam theory and the local flexibility theory of linear elastic fracture mechanics.The
natural characteristics and vibration response of bladed disk with breathing cracks
or open cracks were compared,and the effects of breathing cracks on vibration response localization of bladed disk
were researched.The results show that breathing crack model can cause forced vibration response of bladed disk to appear the complicated nonlinear characteristics.
Furthermore,comparing with bladed disk based on open crack model,the bladed disk based on breathing crack model is more sensitive to mistuning.

Key words: breathing crack, open crack, bladed disk, nonlinear, vibration response localization

中图分类号:

王艾伦, 李帅. 含呼吸式裂纹的失谐叶盘系统响应特性研究[J]. 中国机械工程, 2013, 24(02): 169-174.

WANG Ai-Lun, LI Shuai. Forced Response Characteristics of Mistuned Bladed Disk with Breathing Crack[J]. China Mechanical Engineering, 2013, 24(02): 169-174.

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