THE USE OF SPECTRAL METHOD FOR FATIGUE LIFE ASSESSMENT FOR NON-GAUSSIAN RANDOM LOADS

被引：21

作者：

Nieslony, Adam ^{[1
]}

Bohm, Michal ^{[1
]}

Lagoda, Tadeusz ^{[1
]}

Cianetti, Filippo ^{[2
]}

机构：

[1] Opole Univ Technol, Dept Mech & Machine Design, Fac Mech Engn, Ul Mikolajczyka 5, PL-45271 Opole, Poland

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

来源：

ACTA MECHANICA ET AUTOMATICA | 2016年 / 10卷 / 02期

关键词：

Spectral Method; Fatigue Life; Random Loading; Non-Gaussian;

D O I：

10.1515/ama-2016-0016

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

The well-known problem with the fatigue lifetime assessment of non-Gaussian loading signals with the use of spectral method has been presented in the paper. A correction factors that transform the non-Gaussian signal into an equivalent Gaussian signal proposed by Bracessi et al. (2009) has been used for the purpose of lifetime calculations together with Palmgren-Miner Hypothesis. The calculations have been performed for the 10HNAP steel under random non-Gaussian load with four dominating frequencies. The signal has been generated on the test stand SHM250 for random tension-compression tests. The results with zero and non-zero mean stresses have been used to calculate the fatigue life with the frequency domain method based on Dirlik's model and with a time domain method with the use of the rainflow cycle counting algorithm. The obtained calculation results have been compared with experimental results.

引用

页码：100 / 103

页数：4

共 22 条

[1] Fatigue life under non-Gaussian random loading from various models [J].