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基于DFR法的工程结构振动疲劳寿命评定

严一峰 王长武 常研

中国机械工程2013,Vol.24Issue(6):760-764,5.
中国机械工程2013,Vol.24Issue(6):760-764,5.DOI:10.3969/j.issn.1004-132X.2013.06.011

基于DFR法的工程结构振动疲劳寿命评定

Vibration Fatigue Life Prediction of Engineering Structures Based on DFR Method

严一峰 1王长武 1常研1

作者信息

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摘要

Abstract

An equipment structure with foundry defects was studied herein to acquire the fatigue life based on the DFR method. The data employed in the method were obtained from a series of tests, which were basic mechanical properties, fatigue/crack propagation performance, mode/dynamic response performance,load spectrum of critical site,etc. It is proved that this method provides a reasonable and feasible approach to assess fatigue life of engineering structure under the broad band random vibration environment.

关键词

工程结构/随机振动/疲劳/DFR/仿真

Key words

engineering structure/random vibration/ fatigue/detail fatigue rating(DFR) / simulation

分类

航空航天

引用本文复制引用

严一峰,王长武,常研..基于DFR法的工程结构振动疲劳寿命评定[J].中国机械工程,2013,24(6):760-764,5.

中国机械工程

OA北大核心CSCDCSTPCD

1004-132X

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