Application of DFR Method to Optimal Fatigue Design of Structures

CHEN Binqi; ZENG Jianjiang; WANG Yiding; TONG Mingbo

doi:10.7527/S1000-6893.2013.0201

ACTA AERONAUTICAET ASTRONAUTICA SINICA >

2013 , Vol. 34 >Issue 5: 1122 - 1128

DOI: https://doi.org/10.7527/S1000-6893.2013.0201

Solid Mechanics and Vehicle Conceptual Design

Application of DFR Method to Optimal Fatigue Design of Structures

CHEN Binqi ,
ZENG Jianjiang ,
WANG Yiding ,
TONG Mingbo

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College of Aerospace Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China

Received date: 2012-06-19

Revised date: 2012-08-21

Online published: 2012-09-18

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Abstract

A new method to analyze fatigue reliability based on detail fatigue rating (DFR) is presented which integrates finite element analysis and fatigue analysis. Fatigue reliability calculating software (FEM-DFR) is written with the help of finite element analysis. The agreement between the simulation results calculated by FEM-DFR and the experimental data proves the effectiveness of the method. On this basis, a general platform which integrates Patran/Nastran, FEM-DFR and iSIGHT is developed to overcome the shortcomings of long time-consumption and low efficiency of structure fatigue optimization. A detailed bracket of an actuator cylinder is optimized on the platform. The results show that the platform is stable, data transmission is smooth, operational efficiency is high, and the optimized quality is good.

Key words： finite element analysis; fatigue reliability; fatigue optimization; detail fatigue rating(DFR); integration; platform

Cite this article

CHEN Binqi , ZENG Jianjiang , WANG Yiding , TONG Mingbo . Application of DFR Method to Optimal Fatigue Design of Structures[J]. ACTA AERONAUTICAET ASTRONAUTICA SINICA, 2013 , 34(5) : 1122 -1128 . DOI: 10.7527/S1000-6893.2013.0201

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