An innovative modal approach for frequency domain stress recovery and fatigue damage evaluation

被引：46

作者：

Braccesi, Claudio ^{[1
]}

Cianetti, Filippo ^{[1
]}

Tomassini, Lorenzo ^{[1
]}

机构：

[1] Univ Perugia, Dept Engn, Via G Duranti,93, I-06125 Perugia, Italy

来源：

INTERNATIONAL JOURNAL OF FATIGUE | 2016年 / 91卷

关键词：

Random loads; Frequency domain analysis; Modal approach; Vibration fatigue; Spectral moments; SPECTRAL METHODS; MECHANICAL COMPONENTS; LIFE PREDICTION; SIMULATION; BEHAVIOR; CRITERIA; FAILURE;

D O I：

10.1016/j.ijfatigue.2016.02.028

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The aim of the present paper is to show and validate an innovative method, developed by authors to evaluate, in frequency domain, the fatigue damage of mechanical components modeled by modal approach and subjected to random dynamic loads. The authors, in particular, have theoretically demonstrated that the exact statistical properties (spectral moments) of the PSD functions matrix of stress tensor of the model are obtainable only from PSD functions matrix of its modal coordinates and from PSD functions matrix of inputs. To show the capabilities of this new approach and to verify the obtainable speeding up of the evaluation process two test cases are analyzed and discussed. (C) 2016 Elsevier Ltd. All rights reserved.

引用

页码：382 / 396

页数：15

共 41 条

[21] Influence of correlations between stresses on calculated fatigue life of machine elements [J].